20-F

As filed with the Securities and Exchange Commission on April 11, 2019

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 20-F

Annual Report Pursuant to Section 13 or 15(d) of the Securities

Exchange Act of 1934

for the fiscal year ended December 31, 2018

Commission file number: 1-16269

AMÉRICA MÓVIL, S.A.B. DE C.V.

(exact name of registrant as specified in its charter)

America Mobile

(translation of registrant’s name into English)

United Mexican States

(jurisdiction of incorporation)

Lago Zurich 245, Plaza Carso / Edificio Telcel Colonia Ampliación Granada, Miguel Hidalgo 11529 Mexico City, Mexico

(address of principal executive offices)

Daniela Lecuona Torras

Lago Zurich 245, Plaza Carso / Edificio

Telcel, Piso 16, Colonia Ampliación Granada, Miguel Hidalgo, 11529 Mexico City,

Mexico Telephone: (5255) 2581-3700

Facsimile: (5255) 2581-4422

E-mail: daniela.lecuona@americamovil.com

(name, telephone, e-mail and/or facsimile number and address of company contact person) Securities registered pursuant to Section 12(b) of the Act:

Title of each class:	Name of each exchange on which registered:
A Shares, without par value	New York Stock Exchange
L Shares, without par value	New York Stock Exchange
5.000% Senior Notes Due 2019	New York Stock Exchange
5.000% Senior Notes Due 2020	New York Stock Exchange
3.125% Senior Notes Due 2022	New York Stock Exchange
6.375% Notes Due 2035	New York Stock Exchange
6.125% Notes Due 2037	New York Stock Exchange
6.125% Senior Notes Due 2040	New York Stock Exchange
4.375% Senior Notes Due 2042	New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: None

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act: None

The number of outstanding shares of each of the registrant’s classes of capital or common stock as of December 31, 2018:

20,602 million	AA Shares
567 million	A Shares
44,887 million	L Shares

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.     ☒  Yes            ☐  No

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.     ☐  Yes            ☒  No

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days.     ☒  Yes            ☐  No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this Chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).     ☒  Yes            ☐  No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer    ☒  Accelerated filer    ☐  Non-accelerated filer    ☐  Emerging growth company    ☐

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 13(a) of the Exchange Act.    ☐

† The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:

U.S. GAAP    ☐ International Financial Reporting Standards as issued by the International Accounting Standards Board    ☒ Other    ☐

If “other” has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected to follow.

Item 17    ☐    Item 18    ☐

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

☐  Yes            ☒  No

2018 ANNUAL REPORT FORM 20-F

TABLE OF CONTENTS  

(See Form 20-F Cross Reference Guide on page 114)

Selected Financial Data	2
PART I: INFORMATION ON THE COMPANY	5
About América Móvil	6
Our Networks	14
Our Competitors	16
Acquisitions, Other Investments and Divestitures	16
Marketing, Sales and Distribution, Customer Services	17
PART II: OPERATING AND FINANCIAL REVIEW AND PROSPECTS	19
Overview	20
Composition of Operating Revenues	21
Results of Operations	22
Liquidity and Capital Resources	37
Risk Management	42
Critical Accounting Policies and Estimates	43
PART III: RISK FACTORS	47
PART IV: SHARE OWNERSHIP AND TRADING	59
Major Shareholders	60
Related Party Transactions	61
Dividends	62
Trading Markets	62
Bylaws	63
Purchases of Equity Securities by the Issuer and Affiliated	67
Taxation of Shares and ADSs	68
PART V: CORPORATE GOVERNANCE	73
Management	74
Corporate Governance	84
Controls and Procedures	87
Code of Ethics	89
Corporate Sustainability Report	89
PART VI: REGULATION	91
PART VII: ADDITIONAL INFORMATION	109
Employees	110
Legal Proceedings	110
Principal Accountant Fees and Services	111
Additional Information	112
Forward-Looking Statements	113
Form 20-F Cross Reference Guide	114
Signatures	117
PART VIII: CONSOLIDATED FINANCIAL STATEMENTS	119

     SELECTED FINANCIAL DATA       

We prepared our audited consolidated financial statements included in this annual report in accordance with International Financial Reporting Standards as issued by the International Accounting Standards Board (“IFRS”). The selected financial information should be read in conjunction with, and is qualified in its entirety by reference to, our audited consolidated financial statements.

We present our financial statements in Mexican pesos. This annual report contains translations of various peso amounts into U.S. dollars at specified rates solely for your convenience. You should not construe these translations as representations that the peso amounts actually represent the U.S. dollar amounts or could be converted into U.S. dollars at the rate indicated. Unless otherwise indicated, we have translated U.S. dollar amounts from pesos at the exchange rate of Ps.19.6829 to U.S.$1.00, which was the rate reported by Banco de México on December 31, 2018, as published in the Official Gazette of the Federation (Diario Oficial de la Federación, or “Official Gazette”).

We have not included earnings or dividends on a per American Depositary Share (“ADS”) basis. Each L Share ADS represents 20 L Shares and each A Share ADS represents 20 A Shares.

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		FOR THE YEAR ENDED DECEMBER 31,(1)
	2014		2015		2016		2017		2018		2018
	(in millions of Mexican pesos, except share and per share amounts)										(in millions of U.S. dollars, except share and per share amounts)
STATEMENT OF COMPREHENSIVE INCOME DATA:
Operating revenues	Ps.	848,580	Ps.	893,738	Ps.	975,412	Ps.	1,021,634	Ps.	1,038,208	U.S.$	52,747
Operating costs and expenses		692,026		752,325		865,802		921,490		898,651		45,657
Depreciation and amortization		114,994		125,715		148,526		160,175		155,713		7,911
Operating income		156,554		141,413		109,610		100,144		139,557		7,090
Net profit for the year	Ps.	47,498	Ps.	36,961	Ps.	12,079	Ps.	32,155	Ps.	54,517	U.S.$	2,770
NET PROFIT ATTRIBUTABLE FOR THE YEAR TO:
Equity holders of the parent	Ps.	46,146	Ps.	35,055	Ps.	8,650	Ps.	29,326	Ps.	52,566	U.S.$	2,670
Non-controlling interests		1,352		1,906		3,429		2,829		1,951		100
Net profit for the year	Ps.	47,498	Ps.	36,961	Ps.	12,079	Ps.	32,155	Ps.	54,517	U.S.$	2,770
EARNINGS PER SHARE:
Basic	Ps.	0.67	Ps.	0.52	Ps.	0.13	Ps.	0.44	Ps.	0.79	U.S.$	0.04
Diluted	Ps.	0.67	Ps.	0.52	Ps.	0.13	Ps.	0.44	Ps.	0.79	U.S.$	0.04
Dividends declared per share (2)	Ps.	0.24	Ps.	0.26	Ps.	0.28	Ps.	0.30	Ps.	0.32	U.S.$	0.02
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING (MILLIONS):
Basic		69,254		66,869		65,693		65,909		66,055
Diluted		69,254		66,869		65,693		65,909		66,055
BALANCE SHEET DATA:
Property, plant and equipment, net	Ps.	588,106	Ps.	573,529	Ps.	701,190	Ps.	676,343	Ps.	640,001	U.S.$	32,516
Total assets		1,278,357		1,296,487		1,515,042		1,486,212		1,429,223		72,613
Short-term debt and current portion of long-term debt		57,806		119,590		82,607		51,746		96,230		4,889
Long-term debt		545,949		563,627		625,194		646,139		542,692		27,572
Capital stock		96,383		96,338		96,338		96,339		96,338		4,895
Total equity		234,639		160,854		271,024		260,634		245,872		12,492
NUMBER OF OUTSTANDING SHARES (MILLIONS):
AA Shares		23,384		23,384		20,635		20,602		20,602
A Shares		649		625		592		567		546
L Shares		44,120		41,990		44,571		44,901		44,887
(1) As of December 31, 2018, we owned 51.0% of the total outstanding shares of Telekom Austria AG (“Telekom Austria” or “TKA”). We began consolidating Telekom Austria from July 1, 2014. Prior to July 1, 2014, we accounted for Telekom Austria using the equity method, which affects the comparability of our results for 2014 through 2018. (2) Figures for each year provided represent the annual dividend declared at the general shareholders’ meeting that year. For information on dividends paid per share trans- lated into U.S. dollars, see “Share Ownership and Trading—Dividends” under Part IV of this annual report.

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     ABOUT AMÉRICA MÓVIL  

HISTORY AND CORPORATE INFORMATION

América Móvil, S.A.B. de C.V. (“América Móvil,” “we” or the “Company”) is a sociedad anónima bursátil de capital variable organized under the laws of Mexico.

We were established in September 2000 when Teléfonos de México, S.A.B. de C.V. (“Telmex”), a fixed-line Mexican telecommunications operator privatized in 1990, spun off to us its wireless operations in Mexico and other countries. We have made significant acquisitions throughout Latin America, the United States, the Caribbean and Europe, and we have also expanded our businesses organically. In 2010, we acquired control of Telmex and Telmex Internacional, S.A.B. de C.V. (“Telmex Internacional”) in a series of public tender offers.

Our principal executive offices are located at Lago Zurich 245, Plaza Carso / Edificio Telcel, Colonia Ampliación Granada, Miguel Hidalgo, 11529, Mexico City, Mexico. Our telephone number at this location is (5255) 2581-3700.

BUSINESS OVERVIEW

We provide telecommunications services in 25 countries. We are a leading telecommunications services provider in Latin America, ranking first in wireless, fixed-line, broadband and Pay TV services based on the number of revenue generating units (“RGUs”).

Our largest operations are in Mexico and Brazil, which together account for over half of our total RGUs and where we have the largest market share based on RGUs. We also have operations in 16 other countries in the Americas and seven countries in Central and Eastern Europe as of December 31, 2018. For a list of our principal subsidiaries, see note 2 a(ii) to our audited consolidated financial statements and “Additional Information—Exhibit 8.1” under Part VII of this annual report.

We intend to build on our position as leaders in integrated telecommunications services in Latin America and the Caribbean, and to grow in other parts of the world by continuing to expand our subscriber base through the development of our existing businesses and strategic acquisitions when opportunities arise. We have developed world-class integrated telecommunications platforms to offer our customers new services and enhanced communications solutions with higher data speed transmissions at lower prices. We continue investing in our networks to increase coverage and implement new technologies to optimize our network capabilities. See “Operating and Financial Review and Prospects—Overview” under Part II of this annual report for a discussion on the seasonality of our business.

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RECENT DEVELOPMENTS

Acquisition of Nextel Operations in Brazil

In March 2019, we entered into an agreement to acquire 100% of the outstanding shares of Nextel Telecomunicações Ltda. (“Nextel Brazil”) from NII Holdings Inc. (“NII”) and AI Brazil Holdings B.V. for U.S.$905 million. The transaction is subject to the satisfaction of certain customary closing conditions, including the approval of the stockholders of NII and receipt of regulatory and antitrust approvals from Brazilian government authorities. Nextel Brazil provides nationwide mobile telecommunications services.

Acquisition of Telefónica’s Operations in Guatemala and El Salvador

In January 2019, we entered into an agreement to acquire 100% of the outstanding shares of Telefónica Móviles Guatemala, S.A. (“Telefónica Guatemala”) for U.S.$333 million and 99.3% of the outstanding shares of Telefónica Móviles El Salvador, S.A. de C.V. (“Telefónica El Salvador”) for U.S.$315 million. The acquired companies provide mobile and fixed telecommunications services, including voice, data and Pay TV in Guatemala and El Salvador, respectively. The Telefónica Guatemala acquisition was completed on January 24, 2019. The completion of the Telefónica El Salvador acquisition is subject to certain customary closing conditions, including regulatory approval.

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ABOUT AMERICA MOVIL The following map illustrates the geographic diversity of our operations and certain key performance indicators ("KPIs") as of December 31, 2018. UNITED STATES / TRACFONE Licensed Population 334 Wireless Subscribers 21,688 Revenue Generating Units (RGUs) - Wireless Penetration 126% Wireless operation CENTRAL AMERICA & CARIBBEAN / CLARO Licensed Population 63 Wireless Subscribers 20,250 Revenue Generating Units (RGUs) 9,011 Wireless Penetration 111% Wireless and fixed operations MEXICO / TELCEL TELMEX Licensed Population 125 Wireless Subscribers 75,448 Revenue Generating Units (RGUs) 22,337 Wireless Penetration 95% Wireless and fixed operations ECUADOR / CLARO Licensed Population 17 Wireless Subscribers 8,246 Revenue Generating Units (RGUs) 384 Wireless Penetration 92% Wireless and fixed operations

PERU / CLARO Licensed Population 32 Wireless Subscribers 12,098 Revenue Generating Units (RGUs) 1,472 Wireless Penetration 121% Wireless and fixed operations CHILE / CLARO Licensed Population 19 Wireless Subscribers 6,707 Revenue Generating Units (RGUs) 1,424 Wireless Penetration 153% Wireless and fixed operations AUSTRIA & EASTERN EUROPE Licensed Population 41 Wireless Subscribers 21,000 Revenue Generating Units (RGUs) 6,261 Wireless Penetration 145% Wireless operations: Austria, Belarus, Bulgaria, Croatia, Serbia, Slovenia and Macedonia Fixed operations: Austria, Belarus, Bulgaria, Croatia, Slovenia and Macedonia COLOMBIA / CLARO Licensed Population 50 Wireless Subscribers 29,681 Revenue Generating Units (RGUs) 7,171 Wireless Penetration 119% Wireless and fixed operations BRAZIL / CLARO Licensed Population 210 Wireless Subscribers 56,416 Revenue Generating Units (RGUs) 35,285 Wireless Penetration 111% Wireless and fixed operations ARGENTINA, PARAGUAY & URUGUAY / CLARO Licensed Population 55 Wireless Subscribers 24,264 Revenue Generating Units (RGUs) 775 Wireless Penetration 129% Wireless operation: Argentina, Paraguay and Uruguay Fixed operations: Argentina and Paraguay Licensed Population in millions Wireless Subscribers and Revenue Generating Units in thousands

       ABOUT AMÉRICA MÓVIL

KEY PERFORMANCE INDICATORS

We have identified certain KPIs that help measure the performance of our operations. The table of our KPIs below includes the number of our wireless subscribers and our fixed RGUs, which together make up the total RGUs, in the countries where we operate. Wireless subscribers consist of the number of prepaid and postpaid subscribers to our wireless services. Fixed RGUs consist of fixed voice, fixed data and Pay TV units (which include customers of our Pay TV services and, separately, of certain other digital services). The figures below reflect total wireless subscribers and fixed RGUs of all our consolidated subsidiaries, without adjustments to reflect our equity interest, in the following reportable segments:

• Mexico Wireless;

• Mexico Fixed;

• Brazil;

• Colombia;

• Southern Cone (Argentina, Chile, Paraguay and Uruguay);

• Andean Region (Ecuador and Peru);

• Central America (Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua and Panama);

• the Caribbean (the Dominican Republic and Puerto Rico);

• the United States; and

• Europe (Austria, Belarus, Bulgaria, Croatia, Macedonia, Serbia and Slovenia).

		AS OF DECEMBER 31,
		2016	2017	2018
	(in thousands)
WIRELESS SUBSCRIBERS:
Mexico Wireless		72,953	73,855	75,448
Brazil		60,171	59,022	56,416
Colombia		28,954	29,353	29,681
Southern Cone		30,377	31,076	30,971
Andean Region		20,801	20,352	20,344
Central America		15,085	15,927	14,364
Caribbean		5,453	5,637	5,887
United States		26,070	23,132	21,688
Europe		20,708	20,658	21,000
Total Wireless Subscribers		280,572	279,012	275,798
FIXED RGUS:
Mexico Fixed		22,178	21,851	22,337
Brazil		36,716	35,904	35,285
Colombia		6,304	6,753	7,171
Southern Cone		1,942	2,023	2,199
Andean Region		1,820	1,765	1,856
Central America		5,392	5,811	6,465
Caribbean		2,663	2,700	2,546
Europe		5,900	6,036	6,261
Total Fixed RGUs		82,915	82,844	84,120
Total RGUs		363,488	361,856	359,919

PRINCIPAL BRANDS

We operate in all of our geographic segments under the Claro brand name, except in Mexico, the United States and Europe, where we principally do business under the brand names listed below.

COUNTRY	PRINCIPAL BRANDS	SERVICES AND PRODUCTS
Mexico	Telcel	Wireless voice Wireless data
	Telmex Infinitum	Fixed voice Fixed data
United States	TracFone	Wireless voice Wireless data
	Straight Talk	Wireless voice Wireless data
Europe	A1(1)	Wireless vocie Wireless data Fixed voice Fixed data Pay TV
(1) Since 2017, Telekom Austria has been extending a rollout of the A1 brand to all its regional operating companies.

SERVICES AND PRODUCTS

We offer a wide range of services and products that vary by market, including wireless voice, wireless data and value-added services, fixed voice, fixed data, broadband and IT services, Pay TV and over-the-top (“OTT”) services.

Wireless Operations

In 2018, our wireless voice and data operations generated revenues of Ps. 529.2 billion, representing 51.0% of our consolidated revenues. As of December 31, 2018, our wireless operations represented approximately 76.6% of our total RGUs.

Voice and Data

Our wireless subsidiaries provide voice communication services across the countries in which they operate. We offer international roaming services to our wireless subscribers through a network of cellular service providers with which our wireless subsidiaries have entered into international roaming agreements around the world, and who provide GSM, 3G and 4G-LTE roaming services.

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The voice and data plans are either “postpaid,” where the customer is billed monthly for the previous month, or “prepaid,” where the customer pays in advance for a specified volume of use over a specified period. Postpaid plans increased as a percentage of the wireless base from 25.3% in December 2017 to 27.5% as of December 31, 2018, while prepaid plans represented 72.5%.

Our wireless voice services are offered under a variety of plans to meet the needs of different market segments. In addition, we often bundle wireless data communications services together with wireless voice services. Our wireless subsidiaries had approximately 276 million wireless voice and data subscribers as of December 31, 2018.

Prepaid customers typically generate lower levels of usage and are often unwilling or financially ineligible to purchase postpaid plans. Our prepaid plans have been instrumental to increase wireless penetration in Latin America and Eastern Europe to levels similar to those of developed markets. Additionally, prepaid plans entail little to no risk of non-payment, as well as lower customer acquisition costs and billing expenses, compared to the average postpaid plan.

In general, our average rates per minute of wireless voice are very competitive for both prepaid and postpaid plans. The rates in 2018 decreased an average of 11.12%, at constant exchange rates relative to 2017. In addition, the plans we offer our retail customers include selective discounts and promotions that reduce the rates our customers pay.

Value-Added Services

As part of our wireless data business, our subsidiaries offer value-added services that include Internet access, messaging and other wireless entertainment and corporate services through GSM/EDGE, 3G and 4G LTE networks. Internet services include roaming capability and wireless Internet connectivity for feature phones, smartphones, tablets and laptops, including data transmission, e-mail services, instant messaging, content streaming and interactive applications. For example, in Mexico, our website for our wireless services (www.telcel.com) through

Radiomóvil Dipsa, S.A. de C.V (“Telcel”), offers a wide range of services and content such as video, music, games and other applications, which our subscribers can access from mobile devices. In addition, we offer other wireless services, including wireless security services, mobile payment solutions, machine-to-machine services, mobile banking, virtual private network (“VPN”) services, video calls and Personal Communications Service (“PCS”).

Fixed Operations

In 2018, our fixed voice, data, broadband and IT solutions had revenues of Ps.222.6 billion, representing 21.4% of our consolidated revenues. As of December 31, 2018, our fixed operations represented approximately 23.4% of our total RGUs, compared to 22.9% as of December 31, 2017.

Voice

Our fixed voice services include local, domestic and international long-distance and public telephone services, under a variety of plans to meet the needs of different market segments, specifically tailored to our residential and corporate clients.

Data

We offer data services, including data centers, data administration and hosting services to our residential and corporate clients under a variety of plans.

Broadband

We provide residential broadband access through hybrid fiber-coaxial (“HFC”) or fiber-optic cable. These services are typically bundled with voice services and are competitively priced as a function of the desired or available speed. As a complement to these services, we offer a number of products such as home networking and smart home services.

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  ABOUT AMÉRICA MÓVIL

IT Solutions

Our subsidiaries provide a number of different IT solutions for small businesses and large corporations. We also provide specific solutions to the industrial, financial, government and tourism sectors, among others.

Pay TV

We offer Pay TV through cable and satellite TV subscriptions to both retail and corporate customers under a variety of plans. As of December 31, 2018, we had approximately 21.5 million Pay TV RGUs, a decrease of approximately 88.2 thousand Pay TV RGUs from the prior year.

Equipment, Accessories and Computer Sales

Equipment, accessories and computer sales revenues primarily include revenues from the sale of handsets, accessories and other equipment.

Other Services

Other services include revenues from other businesses, such as telephone directories, call center services, wireless security services, advertising, media and software development services.

OTT Services

We sell video, audio and other media content that is delivered through the internet directly from the content provider to the viewer or end user. Our most important service is ClaroVideo, an on-demand internet streaming video provider with more than 25,000 content titles sold across all the Latin American and Caribbean markets in which we operate. We offer bundled packages of ClaroVideo, which may include:

• Subscription video on demand, providing unlimited access to a catalogue of over 15,000 titles for a fixed monthly subscription fee;

• Transactional video on demand and electronic sell-through, offering the option to rent or buy new content releases; and

• Add-on services such as subscription and other OTT services through a platform payment system, including access to FOX, HBO and Noggin.

We also offer an advertised and unlimited music streaming and downloading service in 16 countries in Latin America and Europe through ClaroMúsica, with access to more than 50,000 titles across all music genres.

Services and Products by Country

The following table is a summary of our principal services rendered and products produced as of December 31, 2018 in the countries in which we operate.

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	WIRELESS VOICE, DATA AND VALUE ADDED SERVICES(1)	FIXED VOICE, BROADBAND, DATA AND IT SERVICES(2)	PAY TV	OTT SERVICES(3)
Argentina	✓	✓	✓	✓
Austria	✓	✓	✓	✓
Belarus	✓	✓	✓	✓
Brazil	✓	✓	✓	✓
Bulgaria	✓	✓	✓	✓
Chile	✓	✓	✓	✓
Colombia	✓	✓	✓	✓
Costa Rica	✓	✓	✓	✓
Croatia	✓	✓	✓	✓
Dominican Republic	✓	✓	✓	✓
Ecuador	✓	✓	✓	✓
El Salvador	✓	✓	✓	✓
Guatemala	✓	✓	✓	✓
Honduras	✓	✓	✓	✓
Macedonia	✓	✓	✓
Mexico	✓	✓		✓(4)
Nicaragua	✓	✓	✓	✓
Panama	✓	✓	✓	✓
Paraguay	✓	✓	✓	✓
Peru	✓	✓	✓	✓
Puerto Rico	✓	✓	✓	✓
Serbia	✓
Slovenia	✓	✓	✓	✓
Uruguay	✓			✓
United States	✓
(1) Includes voice communication and international roaming services, interconnection and termination services, SMS, MMS, e-mail, mobile browsing, entertainment and gaming applications. (2) Includes local calls, national and international long-distance. (3) Includes ClaroVideo and ClaroMúsica. (4) Services provided by non-concessionaire subsidiaries.

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  OUR NETWORKS  

Our networks are one of our main competitive advantages. Today, we own and operate one of the largest integrated platforms based on our covered population across 17 countries in Latin America and are in the process of expanding our network in Europe.

INFRASTRUCTURE

For the year ended December 31, 2018, our capital expenditures totaled Ps.151.8 billion, which allowed us to increase our network, to expand our capacity and to upgrade our systems to operate with the latest technologies. With fully convergent platforms, we are able to deliver high-quality voice, video and data products.

As of December 31, 2018, the main components of our infrastructure were comprised of:

• Base stations: 241,990 base stations with 2G, 3G and 4G technologies (of which approximately 65% are equipped with 3G and 4G capabilities) across Latin America and Europe.

• Fiber-optic network: More than 859 thousand km. Our network passed approximately 75 million homes.

• Submarine cable system: Capacity of more than 189 thousand km in submarine cable, including the AMX-1 submarine cable that extends 17,500 km and connects the United States to Central and South America with 11 landing points and provides international connectivity to all of our subsidiaries in these geographic areas.

• Satellites: Six. Star One S.A. (“Star One”) has the most extensive satellite system in Latin America, with a fleet that covers the United States, Mexico, Central America and South America. We use these satellites to supply capacity for DTH services for Claro TV throughout Brazil and in other DTH Operations, as well as cellular backhaul, video

broadcast and corporate data networks. In 2015 and 2016, we launched the Star One D1 and the Star One C4 to replace two limited capacity satellites.

• Data centers: 27. We use our data centers to manage a number of cloud solutions, such as Infrastructure as a Service (“IAAS”), Software as a Service (“SAAS”), security solutions and unified communications.

In the United States, we do not own any wireless telecommunications facilities or hold any wireless spectrum licenses. Instead, we purchase airtime through agreements with wireless service providers and resell airtime to customers. Through these agreements, we have a nationwide “virtual” network, covering almost all areas in which wireless services are available.

TECHNOLOGY

Our primary wireless networks use GSM/EDGE, 3G and 4G LTE technologies, which we offer in most of the countries where we operate. We aim to increase the speed of transmission of our data services and have been expanding our 3G and 4G LTE coverage. In 2018, we rolled out our 4.5G coverage in most of our operations.

We transmit wireless calls and data through radio frequencies that we use under spectrum licenses. Spectrum is a limited resource, and, as a result, we may face spectrum and capacity constraints on our wireless network. We continue to invest significant capital in expanding our network capacity and reach and to address spectrum and capacity constraints on a market-by-market basis. In 2018, we spent Ps.4.2 billion on the acquisition of spectrum licenses, mainly in Paraguay and Argentina.

The table below presents a summary of the population covered by our network, by country, as of December 31, 2018.

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GENERATION TECHNOLOGY
		GSM	UMTS	LTE
	(% of covered population)
Argentina		98	91	88
Austria		100	98	98
Belarus		99	99	—
Brazil		93	94	81
Bulgaria		100	100	99
Chile		99	97	94
Colombia		92	79	61
Costa Rica		74	80	40
Croatia		99	99	99
Dominican Republic		100	99	94
Ecuador		96	76	59
El Salvador		91	82	64
Guatemala		89	81	62
Honduras		86	81	52
Macedonia		100	100	99
Mexico		93	94	86
Nicaragua		85	80	46
Panama		84	84	67
Paraguay		76	73	53
Peru		87	80	73
Puerto Rico		80	96	86
Serbia		99	98	98
Slovenia		100	100	99
Uruguay		96	91	80

15

  OUR COMPETITORS  

We operate in an intensely competitive industry. Competitive factors within our industry include pricing, brand recognition, service and product offerings, customer experience, network coverage and quality, development and deployment of technologies, availability of additional spectrum licenses and regulatory developments.

Our principal competitors differ, depending on the geographical market and the types of service we offer. We compete against other providers, of wireless, broadband and Pay TV that operate on a multi-national level, such as AT&T Inc., Teléfonica and Millicom, as well as various providers that operate on a nationwide level, such as Telecom Argentina and TIM. Competition remains intense as a result of saturation in the fixed and wireless

market, increased network investment by our competitors, the development and deployment of new technologies, the introduction of new products and services, new market entrants, the availability of additional spectrum, both licensed and unlicensed, and regulatory changes.

The effects of competition on our subsidiaries depend, in part, on the size, service offerings, financial strength and business strategies of their competitors, regulatory developments and the general economic and business climate in the countries in which they operate, including demand growth, interest rates, inflation and exchange rates. The effects could include loss of market share and pressure to reduce rates. See “Regulation” under Part VI and “Risk Factors” under Part III of this annual report.

  ACQUISITIONS, OTHER

  INVESTMENTS AND DIVESTITURES  

Geographic diversification has been a key to our financial success, as it has provided for greater stability in our cash flow and profitability and has contributed to our strong credit ratings. In recent years, we have been evaluating the expansion of our operations to regions outside of Latin America. We believe that Europe and other areas beyond Latin America present opportunities for investment in the telecommunications sector that could benefit us and our shareholders over the long term.

We continue to seek investment opportunities in telecommunications and related companies worldwide, including in markets where we are already present, and we often have several possible acquisitions under consideration. We can give no assurance as to the extent, timing or cost of such investments.

We may pursue opportunities in Latin America or in other areas in the world. Some of the assets that we acquire may require significant funding for capital expenditures.

We continue to make incremental acquisitions in areas that we consider accretive to our existing operations. For additional information on our acquisitions and investments, see Recent Developments above and note 12 to our audited consolidated financial statements included in this annual report.

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  MARKETING, SALES AND DISTRIBUTION,     

  CUSTOMER SERVICES     

MARKETING

We advertise our services and products through different channels with consistent and distinct branding and targeted marketing. We advertise via print, radio, television, digital media, sports event sponsorships and other outdoor advertising campaigns. In 2018, our efforts were mainly focused on promoting our 4.5G LTE services, leveraging the speed and quality of our networks and our fixed bundled offers, which compete on broadband speed and premium content.

We build on the strength of our well-recognized brand names to increase consumer awareness and customer loyalty. Building brand recognition is crucial for our business, and we have managed to position our brands as those of a premium carrier in most countries where we operate. For example, Claro is the most valuable telecom brand in the Latin America region, according to the Telecoms 300 2018 report by Brand Finance. BrandZ’s Top 50 Most Valuable Latin American Brands 2018 list ranked Telcel among the top-ten brands in Latin America. In the same year, BrandZ also named Telcel and Telmex as the highest recognized telecom brands in Mexico, and Telcel and Claro as two of the highest-ranked telecom brands in Latin America. In addition, Embratel and NET, our brands in Brazil, are among the top fifteen most valuable brands in the country. A 2018 study by Austrian Brand Monitor found that

A1, the brand name behind Telekom Austria, ranked number one in the Austrian telecommunications market for brand awareness, as well as for brand perception as a premium brand.

SALES AND DISTRIBUTION

Our extensive sales and distribution channels help us attract new customers and develop new business opportunities. We primarily sell our services and products through a network of retailers and service centers for retail customers and a dedicated sales force for corporate customers, with more than 450,000 points of sale and almost 2,800 customer service centers. Our subsidiaries also sell their services and products online.

CUSTOMER SERVICES

We give priority to providing our customers with quality customer care and support, with approximately 120,000 employees dedicated to customer service. We focus our efforts on constantly improving our customers’ experience by leveraging our commercial offerings and our sales and distribution networks. Customers may make inquiries by calling a toll-free telephone number, accessing our subsidiaries’ web sites and social media accounts or visiting one of the customer sales and service centers located throughout the countries we serve.

17

PART II OPERATING AND FINANCIAL REVIEW AND PROSPECTS

  OVERVIEW  

INTRODUCTION

Segments

We have operations in 25 countries, which are aggregated for financial reporting purposes into ten reportable segments. Our operations in Mexico are presented in two segments—Mexico Wireless and Mexico Fixed, which consist principally of Telcel and Telmex, respectively. Our headquarters operations are allocated to the Mexico Wireless segment. Financial information about our segments is presented in note 22 to our audited consolidated financial statements included in this annual report.

The factors that drive our financial performance differ in the various countries where we operate, including subscriber acquisition costs, the competitive landscape, the regulatory environment, economic factors and interconnection rates, among others. Accordingly, our results of operations in each period reflect a combination of these effects on our different segments.

Constant Currency Presentation

Our financial statements are presented in Mexican pesos, but our operations outside Mexico account for a significant portion of our revenues. Currency variations between the Mexican peso and the currencies of our non-Mexican subsidiaries, especially the Euro, U.S. dollar, Brazilian real, Colombian and Argentine peso, affect our results of operations as reported in Mexican pesos. In the following discussion regarding our operating results, we include a discussion of the change in the different components of our revenues between periods at constant exchange rates, i.e., using the same exchange rate to translate the local-currency results of our non-Mexican operations for both periods. We believe that this additional information helps investors better understand the performance of our non-Mexican operations and their contribution to our consolidated results.

Effects of Exchange Rates

Our results of operations are affected by changes in currency exchange rates. In 2018 compared to 2017, the Mexican peso was stronger against some of our operating currencies (including the Brazilian Real and the Argentine Peso) and weaker against others (including the U.S. Dollar and the Euro).

Since most of our debt is issued by América Móvil out of Mexico, to the extent that our functional currency, the Mexican peso, appreciates or depreciates against the currencies in which our indebtedness is denominated, we

may incur foreign exchange gains or losses that are recorded as other comprehensive income in our consolidated statements of financial position.

Changes in exchange rates also affect the fair value of derivative financial instruments that we use to manage our currency-risk exposure, which are generally not accounted for as hedging instruments. In 2018, the Mexican peso and the Brazilian real weakened against the currencies in which most of our indebtedness is denominated. We recorded net foreign exchange losses of Ps.7.3 billion and net fair value losses on derivatives of Ps.4.7 billion. In 2017, the Mexican peso and the Brazilian real weakened against the currencies in which most of our indebtedness is denominated. We recorded net foreign exchange losses of Ps.13.8 billion, partially offset by net fair value gains on derivatives of Ps.8.2 billion. See note 7 to our audited consolidated financial statements included in this annual report.

Recent Changes in Accounting Standards

We adopted IFRS 15 on revenue recognition for the first time in 2018 using the modified retrospective method, which does not require us to restate our financial information from prior periods. The impact of applying IFRS 15 to our audited consolidated financial statements in 2018 was not significant, see note 2 i) to our audited consolidated financial statements included in this annual report.

We have adopted IFRS 16 on leasing as of January 1, 2019 using the modified retrospective method. The implementation of IFRS 16 will have a significant impact on our consolidated statements of financial position by requiring that we recognize right-of-use assets and lease liabilities. In our consolidated statements of comprehensive income, we expect the impact of the new standard will be to increase interest expense and depreciation while reducing other operating costs, without a significant impact on net income. The future impact of IFRS 16 on our results of operations will depend not only on the lease agreements in effect at the time of adoption but also on any new lease agreements. For more information, see note 23 to our audited consolidated financial statements included in this annual report.

Effects of Regulation

We operate in a regulated industry. Our results of operations and financial condition have been, and will continue to be, affected by regulatory actions and changes. Significant regulatory developments are presented in more detail in “Regulation” under Part VI and “Risk Factors” under Part III of this annual report.

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  COMPOSITION OF OPERATING REVENUES 

In 2018, our total operating revenues were Ps.1,038.2 billion.

Revenues from wireless and fixed voice services primarily include charges from monthly subscriptions, usage charges billed to customers and usage charges billed to other service providers for calls completed on our network. The primary drivers of revenues from monthly subscription charges are the number of total RGUs and the prices of our service packages. The primary driver of revenues from usage charges (airtime, international and long-distance calls and interconnection costs) is traffic, which is represented by the number of total RGUs and their average usage.

Revenues from wireless and fixed data services primarily include charges for data, cloud, internet and OTT services and the usage from our data centers. In addition, revenues from value-added services and IT solutions to corporate clients contribute to our results for wireless and fixed data services, respectively. Revenues from IT solutions to our corporate clients mainly consist of revenues from installing and leasing dedicated links and revenues from VPN services.

Pay TV revenues consist primarily of charges from subscription services, additional programming, including on-demand programming, and advertising.

Equipment, accessories and computer sales revenues primarily include revenues from the sale of handsets, accessories and other equipment such as office equipment, household appliances and electronics. Most of our sales in handsets are driven by the number of new customers and contract renewals.

Other services primarily include revenues from other businesses, such as advertising and news companies, entertainment content distribution, telephone directories, call center services, wireless security services, network infrastructure services and a software development company.

Seasonality of our Business

Our business is subject to a certain degree of seasonality, characterized by a higher number of new customers during the fourth quarter of each year. We believe this seasonality is mainly driven by the Christmas shopping season. Revenue also tends to decrease during the months of August and September, when family expenses shift towards school supplies in many of the countries in which we operate, mainly Mexico.

General Trends Affecting Operating Results

Our results of operations in 2018 reflected several continuing long-term trends, including:

• intense competition, with growing costs for marketing and subscriber acquisition and retention, as well as declining customer prices;

• changes in the telecommunications regulatory environment;

• growing demand for data services over fixed and wireless networks, as well as for smartphones and devices with data service capabilities;

• declining demand for voice services; and

• growing operating costs reflecting, among other things, higher costs for Pay TV, customer care services and managing larger and more complex networks.

These trends are broadly characteristic of our businesses in all regions in recent years, and they have affected comparable telecommunications providers as well. Our performance in recent years has also been affected by ongoing regulatory changes in Mexico.

21

  RESULTS OF OPERATIONS  

CONSOLIDATED RESULTS OF OPERATIONS FOR 2018 AND 2017

Operating Revenues

Total operating revenues for 2018 increased by 1.6%, or Ps.16.6 billion, over 2017. At constant exchange rates, total operating revenues for 2018 increased by 3.5% over 2017. This increase principally reflects increases in revenues from our mobile and fixed data services, and equipment, accessories and computer sales operations, which were partially offset by a decrease in revenues from our mobile and fixed voice services.

REVENUES SERVICES. Revenues services for 2018 decreased by 1.7%, or Ps.14.8 billion, over 2017. At constant exchange rates, revenues services for 2018 increased by 0.5% over 2017. This increase principally reflects increases in revenues from our mobile voice and fixed and mobile data services, which were partially offset by a decrease in revenues from our fixed voice services.

SALES OF EQUIPMENT, ACCESSORIES AND COMPUTERS. Sales of equipment, accessories and computer sales revenues for 2018 increased by 21.9%, or Ps.31.3 billion, over 2017. At constant exchange rates, revenues from sales of equipment, accessories and computer sales for 2018 increased by 22.1% over 2017. This increase principally reflects higher sales of data-enabled devices and accesories.

Operating Costs and Expenses

COST OF SALES. Cost of sales was Ps.180.0 billion for 2018, an increase of 5.8% from Ps.170.2 billion in 2017. At constant exchange rates, cost of sales for 2018 increased by 5.5% over 2017. This increase principally reflects sales of higher-end smartphones provided to our postpaid subscribers and an increase in handset financing plans.

COST OF SERVICES. Cost of services was Ps.328.8 billion for 2018, an increase of 0.8% from Ps.326.2 billion in 2017. At constant exchange rates, cost of services for 2018 increased by 2.8% over 2017. This increase principally reflects an increase in costs related to network operations, including energy and leasing tower sites, third-party technical and IT services, as well as TV content acquisition, which was partially offset by our coporate cost-savings program.

COMMERCIAL, ADMINISTRATIVE AND GENERAL EXPENSES. Commercial, administrative and general expenses for 2018 decreased by 5.6%, or Ps.13.4 billion, over 2017. As a percentage of operating revenues, commercial, administrative and general expenses were 21.9% for 2018, as compared to 23.6% for 2017. At constant exchange rates, commercial, administrative and general expenses for 2018 decreased by 3.8% over 2017. This decrease principally reflects a decrease in costs related to customer services, systems development and local taxes.

OTHER EXPENSES. Other expenses for 2018 decreased by Ps.17.4 billion over 2017, principally reflecting the payment in 2017 of an arbitration award granted in Colombia.

DEPRECIATION AND AMORTIZATION. Depreciation and amortization for 2018 decreased by 2.8%, or Ps.4.5 billion, over 2017. As a percentage of operating revenues, depreciation and amortization was 15.0% for 2018, as compared to 15.7% for 2017. At constant exchange rates, depreciation and amortization for 2018 decreased by 1.8% over 2017.

Operating Income

Operating income for 2018 increased by 39.4%, or Ps.39.4 billion, over 2017. Operating margin (operating income as a percentage of operating revenues) was 13.4% for 2018, as compared to 9.8% for 2017.

Non-Operating Items

NET INTEREST EXPENSE. Net interest expense (interest expense less interest income) for 2018 decreased by 22.8%, or Ps.6.3 billion, over 2017. This decrease principally reflects the favorable resolution of certain tax contingencies.

FOREIGN CURRENCY EXCHANGE LOSS, NET. We recorded a net foreign currency exchange loss of Ps.7.3 billion for 2018, compared to our net foreign currency exchange loss of Ps.13.8 billion for 2017. The loss principally reflects the depreciation of some of the currencies in which our indebtedness is denominated, particularly the Euro and the pound sterling.

VALUATION OF DERIVATIVES, INTEREST COST FROM LABOR OBLIGATIONS AND OTHER FINANCIAL ITEMS, NET. We recorded a loss of Ps.10.2 billion for 2018 on the

22

valuation of derivatives, interest cost from labor obligations and other financial items, net, compared to a loss of Ps.1.9 billion for 2017. The loss in 2018 principally reflects a derivatives loss, which was partially offset by gains in our monetary position.

INCOME TAX. Our income tax expense for 2018 increased by 86.3%, or Ps.21.5 billion, over 2017. This increase principally reflects higher pretax income due to a smaller foreign exchange loss in 2018 compared to 2017.

Our effective corporate income tax rate as a percentage of profit before income tax was 46.0% for 2018, compared to 43.7% for 2017. This rate differed from the Mexican statutory rate of 30% and changed year over year principally as a result of changes in permanent items such as local tax inflation effects and other impacts of non-taxable items.

Net Profit

We recorded a net profit of Ps.54.5 billion for 2018, an increase of 69.5%, or Ps.22.4 billion, over 2017.

CONSOLIDATED RESULTS OF OPERATIONS FOR 2017 AND 2016

Operating Revenues

Total operating revenues for 2017 increased by 4.7%, or Ps.46.2 billion, over 2016. At constant exchange rates, total operating revenues for 2017 increased by 2.0% over 2016. This increase principally reflects increases in revenues from our mobile data, fixed data and Pay TV operations, which were partially offset by a decrease in revenues from our mobile voice and fixed voice operations.

MOBILE VOICE. Mobile voice revenues for 2017 decreased by 8.5%, or Ps.20.6 billion, over 2016. At constant exchange rates, mobile voice revenues for 2017 decreased by 10.8% over 2016. This decrease principally reflects reduced interconnection rates and traffic in international and domestic long-distance calls, which was driven by higher data usage due to the growing use of social networking platforms.

FIXED VOICE. Fixed voice revenues for 2017 decreased by 5.7%, or Ps.5.4 billion, over 2016. At constant exchange rates, fixed voice revenues for 2017 decreased by 9.1% over

2016. This decrease principally reflects reduced interconnection rates and traffic in international and domestic long-distance calls, which was driven by the growing use of wireless technology and broadband voice services, such as WiFi calling.

MOBILE DATA. Mobile data revenues for 2017 increased by 20.1%, or Ps.51.6 billion, over 2016. At constant exchange rates, mobile data revenues for 2017 increased by 18.8% over 2016. This increase principally reflects the increased use of mobile data services, such as media and content downloading, web browsing, content streaming and machine-to-machine services, which was driven in part by the growing use of social networking apps and content downloading on tablets and notebooks.

FIXED DATA. Fixed data revenues for 2017 increased by 10.3%, or Ps.13.0 billion, over 2016. At constant exchange rates, fixed data revenues for 2017 increased by 5.9% over 2016. This increase principally reflects the growth in residential broadband services and corporate data services, such as cloud, dedicated links and data center services.

PAY TV. Pay TV revenues for 2017 increased by 11.0%, or Ps.8.6 billion, over 2016. At constant exchange rates, Pay TV revenues for 2017 increased by 2.3% over 2016. This increase principally reflects growth in our subscriber base and higher revenues driven by the cross-marketing of bundled packages and new TV channel packages, particularly in Colombia, Central America and the Caribbean.

EQUIPMENT, ACCESSORIES AND COMPUTER SALES. Equipment, accessories and computer sales revenues for 2017 decreased by 0.2%, or Ps.0.3 billion, over 2016. At constant exchange rates, revenues from equipment, accessories and computer sales for 2017 decreased by 0.7% over 2016. This decrease principally reflects lower sales of higher-end smartphones, other data-enabled devices and tablets, which were partially offset by higher sales of lower-end smartphones due to subsidies provided to our postpaid subscribers and handset financing plans.

OTHER SERVICES. Revenues from other services for 2017 decreased by 2.1%, or Ps.0.7 billion, over 2016. At constant exchange rates, revenues from other services for 2017 decreased by 5.0% over 2016. This decrease principally

23

  RESULTS OF OPERATIONS

reflects lower revenues from advertising and media services, online content, wireless security services, telephone directories and call center services.

Operating Costs and Expenses

COST OF SALES AND SERVICES. Cost of sales and services for 2017 increased by 2.3%, or Ps.11.3 billion, over 2016, representing 48.6% of operating revenues for 2017, as compared to 49.7% of operating revenues for 2016. At constant exchange rates, cost of sales and services for 2017 decreased by 0.2% over 2016.

Cost of sales was Ps.170.2 billion for 2017, a decrease of 1.4% from Ps.172.5 billion in 2016. This decrease principally reflects higher sales of lower-end smartphones, which were driven by subsidies provided to our postpaid subscribers and an increase in handset financing plans, and improvements in the inventory management of our handsets.

Cost of services was Ps.326.2 billion for 2017, an increase of 4.4% from Ps.312.6 billion in 2016. This increase principally reflects an increase in costs related to network operations, including energy and leasing tower sites, third-party technical and IT services, as well as TV content acquisition.

COMMERCIAL, ADMINISTRATIVE AND GENERAL EXPENSES. Commercial, administrative and general expenses for 2017 increased by 5.5%, or Ps.12.5 billion, over 2016. As a percentage of operating revenues, commercial, administrative and general expenses were 23.6% for 2017, as compared to 23.4% for 2016. At constant exchange rates, commercial, administrative and general expenses for 2017 increased by 2.2% over 2016. This increase principally reflects an increase in costs related to customer services, allowance for doubtful accounts, systems development and local taxes.

Telcel and Telmex, like other Mexican companies, are required by law to pay their employees, in addition to their agreed compensation and benefits, profit sharing in an aggregate amount equal to 10.0% of each entity’s taxable income. Our subsidiaries in Ecuador and Peru are also required to pay employee profit sharing at rates of 15.0% and 10.0% of taxable income, respectively. We account for these profit sharing contributions under commercial, administrative and general expenses.

OTHER EXPENSES. Other expenses for 2017 increased by Ps.20.2 billion over 2016, principally reflecting the payment

of an arbitration award granted in Colombia. For further information on this arbitration proceeding, see note 16 to our audited consolidated financial statements included in this annual report.

DEPRECIATION AND AMORTIZATION. Depreciation and amortization for 2017 increased by 7.8%, or Ps.11.6 billion, over 2016. As a percentage of operating revenues, depreciation and amortization was 15.7% for 2017, as compared to 15.2% for 2016. At constant exchange rates, depreciation and amortization for 2017 increased by 3.4% over 2016. This increase principally reflects investments in our networks and the acceleration of amortizing the costs of various brands of Telekom Austria.

Operating Income

Operating income for 2017 decreased by 8.6%, or Ps.9.5 billion, over 2016. Operating margin (operating income as a percentage of operating revenues) was 9.8% for 2017, as compared to 11.2% for 2016. Excluding the effects of the approximately U.S.$1.0 billion arbitration payment in Colombia, operating income increased by 8.3%, or Ps.9.1 billion, over 2016.

Non-Operating Items

NET INTEREST EXPENSE. Net interest expense (interest expense less interest income) for 2017 decreased by 7.7%, or Ps.2.3 billion, over 2016. This decrease principally reflects lower interest expense due to the amortization of debt during this period.

FOREIGN CURRENCY EXCHANGE LOSS, NET. We recorded a net foreign currency exchange loss of Ps.13.8 billion for 2017, compared to our net foreign currency exchange loss of Ps.40.4 billion for 2016. The loss in both periods principally reflects the appreciation of some of the currencies in which our indebtedness is denominated, particularly the U.S. dollar, the Euro and the pound sterling.

VALUATION OF DERIVATIVES, INTEREST COST FROM LABOR OBLIGATIONS AND OTHER FINANCIAL ITEMS, NET. We recorded a loss of Ps.1.9 billion for 2017 on the valuation of derivatives, interest cost from labor obligations and other financial items, net, compared to a loss of Ps.16.2 billion for 2016. The net loss in 2017 principally reflects the interest cost of labor obligations, which was partially offset by a gain in valuation of derivatives.

24

EQUITY INTEREST IN NET INCOME OF ASSOCIATED COMPANIES. Our share of the net income of associated companies accounted for under the equity method was Ps.0.1 billion in 2017, as compared to Ps.0.2 billion for 2016.

INCOME TAX. Our income tax expense for 2017 increased by 118.8%, or Ps.13.5 billion, over 2016. This increase principally reflects the effect of a smaller foreign exchange loss than the one observed in 2016.

Our effective corporate income tax rate as a percentage of profit before income tax was 43.7% for 2017, compared to

48.6% for 2016. This rate differed from the Mexican statutory rate of 30% and changed year over year principally as a result of changes in permanent items such as the valuation of derivatives and other impacts of non-taxable items. We are evaluating the impact of the U.S. income tax reform on our U.S. operations, but we do not expect a material impact on our effective corporate income tax rate.

Net Profit

We recorded a net profit of Ps.32.2 billion for 2017, an increase of 166.2%, or Ps.20.1 billion, over 2016.

25

  RESULTS OF OPERATIONS

SEGMENT RESULTS OF OPERATIONS

We discuss below the operating results of each reportable segment. Notes 2 z) and 22 to our audited consolidated financial statements describe how we translate the financial statements of our non-Mexican subsidiaries. Exchange rate changes between the Mexican peso and the currencies in which our subsidiaries operate affect our reported results in Mexican pesos and the comparability of reported results between periods.

The following table sets forth the exchange rates used to translate the results of our significant non-Mexican operations, as expressed in Mexican pesos per foreign currency unit, and the change from the rate used in the prior period indicated. The U.S. dollar is our functional currency in several of the countries or territories in which we operate in addition to the United States, including Ecuador, Puerto Rico, Panama and El Salvador.

MEXICAN PESOS PER FOREIGN CURRENCY UNIT (AVERAGE FOR THE PERIOD)
			2016/2017					2017/2018
	2016		% CHANGE			2017		% CHANGE			2018
Brazilian real		5.3868		10.2			5.9346		(10.8	)		5.2937
Colombian peso		0.0061		4.9			0.0064		1.6			0.0065
Argentine peso		1.2632		(9.0	)		1.1489		(36.4	)		0.7311
U.S. dollar		18.6529		1.5			18.9400		1.6			19.2397
Euro		20.6334		3.5			21.3649		6.3			22.7101

The tables below set forth operating revenues and operating income for each of our segments for the years indicated.

YEAR ENDED DECEMBER 31, 2018
	OPERATING REVENUES						OPERATING INCOME
	(in millions of Mexican pesos)			(as a % of total operating revenues)			(in millions of Mexican pesos)			(as a % of total operating income)
Mexico Wireless	Ps.	224,557			21.6	%	Ps.	57,451			41.2	%
Mexico Fixed		96,081			9.3			8,086			5.8
Brazil		193,306			18.6			23,495			16.8
Colombia		75,805			7.3			14,389			10.3
Southern Cone		102,350			9.9			16,976			12.2
Andean Region		55,787			5.4			5,004			3.6
Central America		45,033			4.3			4,868			3.5
United States		153,266			14.8			2,665			1.9
Caribbean		36,640			3.5			5,812			4.2
Europe		100,716			9.7			4,732			3.4
Eliminations		(45,333	)		(4.4	)		(3,921	)		(2.9	)
Total	Ps.	1,038,208			100.0	%	Ps.	139,557			100.0	%

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YEAR ENDED DECEMBER 31, 2017
	OPERATING REVENUES						OPERATING INCOME
	(in millions of Mexican pesos)			(as a % of total operating revenues)			(in millions of Mexican pesos)			(as a % of total operating income)
Mexico Wireless	Ps.	206,771			20.2	%	Ps.	50,666			50.6	%
Mexico Fixed		98,485			9.6			7,922			7.9
Brazil		215,322			21.1			11,601			11.6
Colombia		72,740			7.1			(4,704	)		(4.7	)
Southern Cone		82,344			8.1			11,676			11.7
Andean Region		56,571			5.5			5,650			5.6
Central America		44,282			4.3			5,252			5.2
United States		148,590			14.5			2,915			2.9
Caribbean		35,215			3.4			4,752			4.7
Europe		93,644			9.2			4,524			4.5
Eliminations		(32,330	)		(3.0	)		(111	)		(0.0	)
Total	Ps.	1,021,634			100.0	%	Ps.	100,143			100.0	%

YEAR ENDED DECEMBER 31, 2016
	OPERATING REVENUES						OPERATING INCOME
	(in millions of Mexican pesos)			(as a % of total operating revenues)			(in millions of Mexican pesos)		(as a % of total operating income)
Mexico Wireless	Ps.	203,567			20.9	%	Ps.	48,220		44.0	%
Mexico Fixed		102,216			10.5			12,276		11.2
Brazil		197,357			20.2			6,325		5.8
Colombia		67,589			6.9			11,210		10.2
Southern Cone		72,330			7.4			8,317		7.6
Andean Region		56,131			5.8			6,087		5.6
Central America		42,421			4.3			3,831		3.5
United States		140,856			14.4			1,221		1.1
Caribbean		36,498			3.7			6,143		5.6
Europe		86,979			8.9			5,389		4.9
Eliminations		(30,532	)		(3.0	)		591		0.5
Total	Ps.	975,412			100.0	%	Ps.	109,610		100.0	%

27

  RESULTS OF OPERATIONS

INTERPERIOD SEGMENT COMPARISONS

The following discussion addresses the financial performance of each of our reportable segments, first by comparing results for 2018 and 2017 and then by comparing results for 2017 and 2016. In the year-to- year comparisons for each segment, we include percentage changes in operating revenues, percentage changes in operating income and operating margin (operating income as a percentage of operating revenues), in each case calculated based on the segment financial information presented in note 22 to our audited consolidated financial statements, which is prepared in accordance with IFRS.

Each reportable segment includes all income, cost and expense eliminations that occurred between subsidiaries within the reportable segment. The Mexico Wireless segment also includes corporate income, costs and expenses.

Comparisons in the following discussion are calculated using figures in Mexican pesos. We also include percentage changes in adjusted segment operating revenues, adjusted segment operating income and adjusted operating margin (adjusted operating income as a percentage of adjusted operating revenues). The adjustments eliminate (i) certain intersegment transactions, (ii) for our non-Mexican segments, the effects of exchange rate changes and (iii) for the Mexican Wireless segment only, revenues and costs of group corporate activities and other businesses that are allocated to the Mexico Wireless segment.

2018 COMPARED TO 2017

Mexico Wireless

The number of prepaid wireless subscribers for 2018 increased by 1.4% over 2017, and the number of postpaid wireless subscribers increased by 5.8%, resulting in an increase in the total number of wireless subscribers in Mexico of 2.2%, or 1.5 million, to approximately 75.0 million as of December 31, 2018.

Segment operating revenues for 2018 increased by 8.6% over 2017. Adjusted segment operating revenues for 2018 increased by 11.4% over 2017. This increase in segment operating revenues principally reflects an increase of 11.7% in mobile data revenues, driven by increased use of value-

added services by our wireless subscribers, including activity from messaging, content downloading, mobile applications and social media, and an increase in revenues from service plans offering higher data capacity.

Segment operating income for 2018 increased by 13.4% over 2017. Adjusted segment operating income for 2018 increased by 20.2% over 2017.

Segment operating margin was 25.6% in 2018, as compared to 24.5% in 2017. Adjusted segment operating margin for this segment was 31.1% in 2018, as compared to 28.8% in 2017. This increase in segment operating margin for 2018 principally reflects costs related to interconnection rates, licensing fees, mobile site infrastructure rentals, maintenance and roaming charges.

Mexico Fixed

The number of fixed voice RGUs in Mexico for 2018 increased by 1.0% over 2017, and the number of broadband RGUs in Mexico increased by 3.8%, resulting in an increase in total fixed RGUs in Mexico of 2.2% over 2017, or 486 thousand, to approximately 22.0 million as of December 31, 2018.

Segment operating revenues for 2018 decreased by 2.4% over 2017. Adjusted segment operating revenues for 2018 decreased by 3.8% over 2017. This decrease in segment operating revenues principally reflects a decrease in fixed voice revenues of 4.4%, driven by RGU disconnections, a decrease in long-distance calls and a decrease in fixed data revenues of 0.7%, which was partially offset by higher revenues from broadband and corporate network services.

Segment operating income for 2018 increased by 2.1% over 2017. Adjusted segment operating income for 2018 decreased by 18.1% over 2017. This decrease principally reflects lower revenues from long-distance services and equipment sales.

Segment operating margin was 8.4% in 2018, as compared to 8.0% in 2017. Adjusted segment operating margin was 3.7% in 2018, as compared to 4.3% in 2017. This decrease in segment operating margin for 2018 principally reflects increases in costs associated with customer service and service quality improvements, as well as network maintenance.

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Brazil

The number of prepaid wireless subscribers for 2018 decreased by 14.9% over 2017, and the number of postpaid wireless subscribers increased by 15.6%, resulting in a decrease in the total number of wireless subscribers in Brazil of 4.4%, or 2.6 million, to approximately 56.0 million as of December 31, 2018. The number of fixed voice RGUs for 2018 decreased by 5.0% over 2017, the number of broadband RGUs increased by 5.0%, and the number of Pay TV RGUs decreased by 3.1%, resulting in a decrease in total fixed RGUs in Brazil of 1.7%, or 619 thousand, to approximately 35.0 million as of December 31, 2018.

Segment operating revenues for 2018 decreased by 10.2% over 2017. Adjusted segment operating revenues for 2018 increased by 0.5% over 2017. This increase in segment operating revenues principally reflects higher mobile data and fixed data revenues of 31.0% and 7.6%, respectively, in 2018 over 2017. The increase in mobile data revenues in 2018 principally reflects the usage of social networking platforms, cloud services and content, and fixed data revenues increased principally due to an increase in broadband RGUs and corporate network services. The increase in segment operating revenues was partially offset by a decrease in mobile voice, fixed voice and Pay TV revenues of 31.9%, 17.5% and 5.2%, respectively, in 2018 over 2017, driven by RGU disconnections and lower traffic reflecting a decrease in disposable income.

Segment operating income for 2018 increased by 102.5% over 2017. Adjusted segment operating income for 2018 increased by 172.4% over 2017. This increase principally reflects the favorable resolution of certain tax contingencies.

Segment operating margin was 12.2% in 2018, as compared to 5.4% in 2017. Adjusted segment operating margin was 11.3% in 2018, as compared to 4.2% in 2017. This increase in segment operating margin for 2018 principally reflects synergy gains in marketing, network maintenance, information technology, subscriber acquisition and customer service related to the ongoing integration of our three Brazilian subsidiaries, which have collectively driven our costs down.

Colombia

The number of prepaid wireless subscribers for 2018 increased by 0.4% over 2017, and the number of postpaid wireless subscribers increased by 3.7%, resulting in an increase in the total number of wireless subscribers in Colombia of 1.1%, or 328 thousand, to approximately 30.0 million as of December 31, 2018. The number of fixed voice RGUs for 2018 increased by 10.1% over 2017, the number of broadband RGUs increased by 6.4% and the number of Pay TV RGUs increased by 2.8%, resulting in an increase in total fixed RGUs in Colombia of 6.2%, or 418 thousand, to approximately 7.1 million as of December 31, 2018.

Segment operating revenues for 2018 increased by 4.2% over 2017. Adjusted segment operating revenues for 2018 increased by 2.6% over 2017. This increase in segment operating revenues principally reflects increases in fixed data revenues, mobile data revenues, fixed voice revenues and Pay TV revenues, which increased by 8.9%, 3.2%, 9.0% and 8.6%, respectively, in 2018, principally due to an increase in sales of bundled packages of wireless services, higher demand for data plans and an increase in subscribers for internet services. The increase in segment operating revenues was partially offset by a decrease of 8.1% in mobile voice revenues, driven by more competitive commercial offerings in response to pricing pressure from competitors.

Segment operating income for 2018 was Ps.14.4 billion, compared to a segment operating loss of Ps 4.7 billion in 2017. This change is principally due to the payment in 2017 of an arbitration award granted in Colombia. Adjusted segment operating income for 2018 increased by 576.5% over 2017.

Segment operating margin was 19.0% in 2018, as compared to (6.5%) in 2017. Adjusted segment operating margin was 23.3% in 2018, as compared to (5.0%) in 2017. This increase in segment operating margin for 2018 principally reflects Comcel’s cost savings program.

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  RESULTS OF OPERATIONS

Southern Cone—Argentina, Chile, Paraguay and Uruguay

The number of prepaid wireless subscribers for 2018 decreased by 1.4% over 2017, and the number of postpaid wireless subscribers increased by 1.7%, resulting in a decrease in the total number of wireless subscribers in our Southern Cone segment of 0.3%, or 105 thousand, to approximately 31.0 million as of December 31, 2018. The number of fixed voice RGUs for 2018 increased by 8.3% over 2017, the number of broadband RGUs increased by 12.6%, and the number of Pay TV RGUs increased by 6.1%, resulting in an increase in total fixed RGUs in our Southern Cone segment of 8.7%, or 175 thousand, to approximately 2.2 million as of December 31, 2018.

Segment operating revenues for 2018 increased by 24.3% over 2017. Adjusted segment operating revenues for 2018 increased by 17.4% over 2017. This increase principally reflects an increase of 33.4% in Argentina, Paraguay and Uruguay. This increase was driven by higher data usage, particularly in the form of mobile data, video streaming, content downloading and service package purchases in Argentina, Paraguay and Uruguay and in the form of Pay TV, corporate network and broadband services in Chile. For this segment, we analyze results in Argentina, Paraguay and Uruguay in terms of the Argentine peso, because Argentina accounts for the major portion of the operations in these three countries.

Segment operating income for 2018 increased by 45.4% over 2017. Adjusted segment operating income for 2018 increased by 52.1% over 2017. This increase principally reflects an increase in adjusted operating income of 41.0% in Argentina, Paraguay and Uruguay, which was partially offset by a decrease in adjusted operating loss of 16.2% in Chile.

Segment operating margin was 16.6% in 2018, as compared to 14.2% in 2017. Adjusted segment operating margin was 20.2% in 2018, which increased in comparison to 17.0% in 2017. This increase in the segment operating margin for 2018 principally reflects the cost saving programs of our subsidiaries in the Southern Cone.

Andean Region—Ecuador and Peru

The number of prepaid wireless subscribers for 2018 decreased by 0.1% over 2017, and the number of postpaid wireless subscribers increased by 0.2%, resulting in a decrease in the total number of wireless subscribers in our Andean Region segment of 0.04%, or 8 thousand, to approximately 20.3 million as of December 31, 2018. The number of fixed voice RGUs for 2018 increased by 2.9% over 2017, the number of broadband RGUs increased by 12.4% and the number of Pay TV RGUs decreased by 3.2%, resulting in an increase in total fixed RGUs in our Andean Region segment of 5.2%, or 91 thousand, to approximately 1.8 million as of December 31, 2018.

Segment operating revenues for 2018 decreased by 1.4% over 2017. Adjusted segment operating revenues for 2018 decreased by 2.0% over 2017. This decrease principally reflects a decrease of 0.1% in Ecuador and a decrease of 4.3% in Peru. This decrease was driven by lower revenues from our wireless and fixed voice operations, an increase in tax obligations and bad debt expenses in Ecuador and competitive pricing practices, bundled packages and smartphones subsidies in Peru, which was partially offset by higher revenues from mobile data and higher revenues from fixed data, especially broadband and corporate data services.

Segment operating income for 2018 decreased by 11.4% over 2017. Adjusted segment operating income for 2018 decreased by 5.5% over 2017. This decrease principally reflects a decrease of 15.4% in Peru and a decrease of 0.1% in Ecuador.

Segment operating margin was 9.0% in 2018, as compared to 10.0% in 2017. Adjusted segment operating margin was 15.1% in 2018, as compared to 15.9% in 2017. This decrease in the segment operating margin for 2018 principally reflects gains from our cost- savings program and lower direct taxes in Ecuador as well as operation, information technology, marketing and sales costs, which was partially offset by postpaid subscriber acquisition costs driven by a more aggressively competitive environment in Peru.

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Central America—Guatemala, El Salvador, Honduras, Nicaragua, Panama and Costa Rica

The number of prepaid wireless subscribers for 2018 decreased by 11.3% over 2017, and the number of postpaid wireless subscribers decreased by 1.5%, resulting in a decrease in the total number of wireless subscribers in our Central America segment of 9.8%, or approximately 1.6 million, to approximately 14.3 million as of December 31, 2018. The number of fixed voice RGUs for 2018 increased by 8.7% over 2017, the number of broadband RGUs increased by 16.0% and the number of Pay TV RGUs increased by 3.2%, resulting in an increase in total fixed RGUs in our Central America segment of 11.3%, or 654 thousand, to approximately 6.4 million as of December 31, 2018.

Segment operating revenues for 2018 increased by 1.7% over 2017. Adjusted segment operating revenues for 2018 were unchanged over 2017.

Segment operating income for 2018 decreased by 7.3% over 2017. Adjusted segment operating income for 2018 decreased by 6.7% over 2017. This decrease principally reflects a decrease of 14.9% in Guatemala and a decrease of 131.5% in Honduras, which was partially offset by an increase of 18.3% in El Salvador, an increase of 3.1% in Nicaragua, an increase of 30.2% in Panama and an increase of 27.7% in Costa Rica.

Segment operating margin was 10.8% in 2018, as compared to 11.9% in 2017. Adjusted segment operating margin was 12.2% in 2018, as compared to 13.1% in 2017. This decrease in segment operating margin for 2018 principally reflects higher costs related to doubtful accounts, a one-time charge related to the settlement of an interconnection dispute in Guatemala and an unusual charge arising from a government challenge to tax credits in Honduras.

Caribbean—Dominican Republic and Puerto Rico

The number of prepaid wireless subscribers for 2018 increased by 4.8% over 2017, and the number of postpaid wireless subscribers increased by 3.7%, resulting in an increase in the total number of wireless subscribers in our Caribbean segment of 4.4%, or approximately 250 thousand, to approximately 5.9 million as of December 31, 2018. The

number of fixed voice RGUs for 2018 decreased by 8.1% over 2017, the number of broadband RGUs decreased by 6.4% and the number of Pay TV RGUs increased by 3.9%, resulting in a decrease in total fixed RGUs in our Caribbean segment of 5.7%, or 154 thousand, to approximately 2.6 million as of December 31, 2018.

Segment operating revenues for 2018 increased by 4.0% over 2017. Adjusted segment operating revenues for 2018 increased by 2.6% over 2017. This increase in segment operating revenues principally reflects an increase in segment mobile data revenues and an increase in Pay TV revenues in the Dominican Republic, which was partially offset by lower revenues from wireless and fixed voice services in Puerto Rico. We analyze segment results in U.S. dollars because it is the functional currency of our operations in Puerto Rico, and the currency of the Dominican Republic is relatively stable against the U.S. dollar.

Segment operating income for 2018 increased by 22.3% over 2017. Adjusted segment operating income for 2018 increased by 20.7% over 2017. This increase principally reflects an increase of 21.9% in the Dominican Republic and an increase of 730.5% in Puerto Rico.

Segment operating margin was 15.9% in 2018, as compared to 13.5% in 2017. Adjusted segment operating margin was 16.3% in 2018, as compared to 13.8% in 2017. This increase in segment operating margin for 2018 principally reflects lower unusual costs in 2018 related to the reconstruction and operation of our networks in the aftermath of Hurricane Maria, as well as increased revenues in the Dominican Republic and our corporate cost-savings program.

United States

The number of prepaid wireless subscribers for 2018 decreased by 6.2% over 2017, or approximately 1.4 million, to approximately 22.0 million total wireless subscribers in the United States as of December 31, 2018.

Segment operating revenues for 2018 increased by 3.1% over 2017. Adjusted segment operating revenues for 2018 increased by 1.6% over 2017. This increase in segment operating revenues principally reflects higher mobile voice and data usage and revenues driven by the success of existing unlimited data plans and increased equipment sales of higher-end smartphones.

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  RESULTS OF OPERATIONS

Segment operating income for 2018 decreased by 8.6% over 2017. Adjusted segment operating income for 2018 decreased by 17.4% over 2017.

Segment operating margin was 1.7% in 2018, as compared to 2.0% in 2017. Adjusted segment operating margin was 6.8% in 2018, as compared to 8.4% in 2017. This decrease in segment operating margin for 2018 principally reflects an increase in content costs as a result of increased data usage.

Europe

The number of prepaid wireless subscribers for 2018 decreased by 5.8% over 2017, and the number of postpaid wireless subscribers increased by 4.1%, resulting in an increase in the total number of wireless subscribers in our Europe segment of 1.7%, or approximately 342 thousand, to approximately 21.0 million as of December 31, 2018. The number of fixed voice RGUs for 2018 decreased by 2.9% over 2017, the number of broadband RGUs increased by 2.4% and the number of Pay TV RGUs increased by 15.9%, resulting in an increase in total fixed RGUs in our Europe segment of 3.7%, or 224 thousand, to approximately 6.2 million as of December 31, 2018.

Segment operating revenues for 2018 increased by 7.6% over 2017. Adjusted segment operating revenues for 2018 increased by 1.2% over 2017. This increase in segment operating revenues principally reflects an increase in high-value customers in the mobile business and an ongoing strong fixed-line business, along with an increase in connectivity. We analyze segment results in euros because it is the functional currency in our operations in Europe.

Segment operating income for 2018 increased by 4.6% over 2017. Adjusted segment operating income for 2018 decreased by 4.3% over 2017.

Segment operating margin was 4.7% in 2018, as compared to 4.8% in 2017. Adjusted segment operating margin was 4.8% in 2018, as compared to 5.0% in 2017. This decrease in segment operating margin for 2018 principally reflects increases in costs related to marketing and subscriber acquisition.

2017 COMPARED TO 2016

Mexico Wireless

The number of prepaid wireless subscribers for 2017 increased by 0.2% over 2016, and the number of postpaid wireless subscribers increased by 6.2%, resulting in an increase in the total number of wireless subscribers in Mexico of 1.2%, or 902 thousand, to approximately 73.9 million as of December 31, 2017.

Segment operating revenues for 2017 increased by 1.6% over 2016. Adjusted segment operating revenues for 2017 increased by 1.2% over 2016. This increase in segment operating revenues principally reflects an increase of 18.9% in mobile data revenues, driven by increased use of value-added services by our wireless subscribers, including activity from messaging, content downloading, mobile applications and social media, and an increase in revenues from service plans offering higher data capacity. The increase in segment operating revenues was partially offset by a decrease of 24.0% in mobile voice revenues, reflecting a decrease in the average wireless rates per user.

Segment operating income for 2017 increased by 5.1% over 2016. Adjusted segment operating income for 2017 increased by 0.9% over 2016.

Segment operating margin was 24.5% in 2017, as compared to 23.7% in 2016. Adjusted segment operating margin for this segment was 28.8% in 2017, which remained stable in comparison to 28.9% in 2016. The segment operating margin in 2017 principally reflects costs related to interconnection rates, licensing fees, mobile site infrastructure rentals, maintenance and roaming charges.

Mexico Fixed

The number of fixed voice RGUs in Mexico for 2017 decreased by 2.8% over 2016, and the number of broadband RGUs in Mexico increased by 0.4%, resulting in a decrease in total fixed RGUs in Mexico of 1.5% over 2016, or 327 thousand, to approximately 21.9 million as of December 31, 2017.

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Segment operating revenues for 2017 decreased by 3.7% over 2016. Adjusted segment operating revenues for 2017 decreased by 3.9% over 2016. This decrease in segment operating revenues principally reflects a fall in fixed voice revenues of 8.2%, driven by RGU disconnections and a fall in long-distance calls. The decrease in segment operating revenues was partially offset by an increase in fixed data revenues of 2.9%, principally due to higher revenues from broadband and corporate network services.

Segment operating income for 2017 decreased by 35.5% over 2016. Adjusted segment operating income for 2017 decreased by 49.1% over 2016.

Segment operating margin was 8.0% in 2017, as compared to 12.0% in 2016. Adjusted segment operating margin was 4.3% in 2017, as compared to 8.3% in 2016. The decrease in the segment operating margin in 2017 principally reflects increases in costs associated with customer service and service quality improvements, as well as network maintenance.

Brazil

The number of prepaid wireless subscribers for 2017 decreased by 7.6% over 2016, and the number of postpaid wireless subscribers increased by 11.1%, resulting in a decrease in the total number of wireless subscribers in Brazil of 1.9%, or 1.1 million, to approximately 59.0 million as of December 31, 2017. The number of fixed voice RGUs for 2017 decreased by 2.8% over 2016, the number of broadband RGUs increased by 4.2%, and the number of Pay TV RGUs decreased by 5.3%, resulting in a decrease in total fixed RGUs in Brazil of 2.2%, or 812 thousand, to approximately 35.9 million as of December 31, 2017.

Segment operating revenues for 2017 increased by 9.1% over 2016. Adjusted segment operating revenues for 2017 decreased by 1.4% over 2016. This decrease in segment operating revenues principally reflects a fall in mobile voice, fixed voice and Pay TV revenues of 18.8%, 15.1% and 0.4%, respectively, in 2017 over 2016, driven by RGU disconnections and lower traffic reflecting a decrease in disposable income following an overall economic downturn in the country. The decrease in segment operating revenues was partially offset by higher mobile data and fixed data revenues of 28.1% and 5.2%, respectively, in 2017 over 2016. Mobile data revenues increased principally due to the

usage of social networking platforms, cloud services and content, and fixed data revenues increased principally due to an increase in broadband RGUs and corporate network services.

Segment operating income for 2017 increased by 83.4% over 2016. Adjusted segment operating income for 2017 increased by 81.1% over 2016.

Segment operating margin was 5.4% in 2017, as compared to 3.2% in 2016. Adjusted segment operating margin was 4.2% in 2017, as compared to 2.3% in 2016. The increase in segment operating margin in 2017 principally reflects synergy gains in marketing, network maintenance, information technology, subscriber acquisition and customer service related to the ongoing integration of our three Brazilian subsidiaries, which have collectively driven our costs down.

Colombia

The number of prepaid wireless subscribers for 2017 increased by 0.4% over 2016, and the number of postpaid wireless subscribers increased by 5.0%, resulting in an increase in the total number of wireless subscribers in Colombia of 1.4%, or 399 thousand, to approximately 29.4 million as of December 31, 2017. The number of fixed voice RGUs for 2017 increased by 11.1% over 2016, the number of broadband RGUs increased by 8.1% and the number of Pay TV RGUs increased by 3.3%, resulting in an increase in total fixed RGUs in Colombia of 7.1%, or 450 thousand, to approximately 6.8 million as of December 31, 2017.

Segment operating revenues for 2017 increased by 7.6% over 2016. Adjusted segment operating revenues for 2017 increased by 2.8% over 2016. This increase in segment operating revenues principally reflects increases in fixed data revenues, mobile data revenues, fixed voice revenues and Pay TV revenues, which increased by 9.7%, 14.3%, 11.7% and 15.9%, respectively, in 2017, principally due to an increase in sales of bundled packages of wireless services, higher demand for data plans and an increase in subscribers for internet services. The increase in segment operating revenues was partially offset by a decrease of 13.9% in mobile voice revenues, driven by more competitive commercial offerings in response to pricing pressure from competitors.

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  RESULTS OF OPERATIONS

Segment operating income for 2017 decreased by 142.0% over 2016. Adjusted segment operating income for 2017 decreased by 125.2% over 2016. Excluding the effects of the approximately U.S.$1.0 billion arbitration payment in Colombia, adjusted segment operating income for 2017 increased by 15.2%.

Segment operating margin was (6.5)% in 2017, as compared to 16.6% in 2016. Adjusted segment operating margin was (5.0)% in 2017, as compared to 20.5% in 2016. The decrease in segment operating margin for 2017 principally reflects higher costs related to the arbitration payment in Colombia, content licensing and maintenance of our networks, which was partially offset by Comcel’s cost savings program.

Southern Cone—Argentina, Chile, Paraguay and Uruguay

The number of prepaid wireless subscribers for 2017 increased by 2.0% over 2016, and the number of postpaid wireless subscribers increased by 2.9%, resulting in an increase in the total number of wireless subscribers in our Southern Cone segment of 2.3%, or 699 thousand, to approximately 31.1 million as of December 31, 2017. The number of fixed voice RGUs for 2017 increased by 4.6% over 2016, the number of broadband RGUs increased by 9.1%, and the number of Pay TV RGUs increased by 0.6%, resulting in an increase in total fixed RGUs in our Southern Cone segment of 4.2%, or 81 thousand, to approximately 2.0 million as of December 31, 2017.

Segment operating revenues for 2017 increased by 13.8% over 2016. Adjusted segment operating revenues for 2017 increased by 19.0% over 2016. This increase principally reflects an aggregate increase of 22.5% in Argentina, Paraguay and Uruguay and an increase of 10.9% in Chile. This increase was driven by higher data usage, particularly in the form of mobile data, video streaming, content downloading and service package purchases, in Argentina and Chile. For this segment, we analyze results in Argentina, Paraguay and Uruguay in terms of the Argentine peso, because Argentina accounts for the major portion of the operations in these three countries.

Segment operating income for 2017 increased by 40.4% over 2016. Adjusted segment operating income for 2017 increased by 56.2% over 2016. This increase principally reflects an increase in adjusted operating income of 16.8%

in Argentina, Paraguay and Uruguay, which was partially offset by an increase in adjusted operating loss of 30.8% in Chile.

Segment operating margin was 14.2% in 2017, as compared to 11.5% in 2016. Adjusted segment operating margin was 17.0% in 2017, which remained stable in comparison to 17.0% in 2016. The segment operating margin in 2017 principally reflected the cost saving programs of our subsidiaries in the Southern Cone.

Andean Region—Ecuador and Peru

The number of prepaid wireless subscribers for 2017 decreased by 4.3% over 2016, and the number of postpaid wireless subscribers increased by 2.5%, resulting in a decrease in the total number of wireless subscribers in our Andean Region segment of 2.2%, or 450 thousand, to approximately 20.4 million as of December 31, 2017. The number of fixed voice RGUs for 2017 decreased by 7.1% over 2016, the number of broadband RGUs increased by 5.4% and the number of Pay TV RGUs decreased by 7.8%, resulting in a decrease in total fixed RGUs in our Andean Region segment of 3.0%, or 55 thousand, to approximately 1.8 million as of December 31, 2017.

Segment operating revenues for 2017 increased by 0.8% over 2016. Adjusted segment operating revenues for 2017 decreased by 2.4% over 2016. This decrease principally reflects a decrease of 8.9% in Ecuador, which was partially offset by an increase of 3.6% in Peru. This decrease was driven by lower revenues from our wireless and fixed voice operations, an increase in tax obligations and bad debt expenses in Ecuador and competitive pricing practices in Peru, which were partially offset by higher revenues from mobile data and higher revenues from fixed data, especially broadband and corporate data services.

Segment operating income for 2017 decreased by 7.2% over 2016. Adjusted segment operating income for 2017 increased by 0.9% over 2016. This increase principally reflects an increase of 138.7% in Peru, which was partially offset by a decrease of 21.4% in Ecuador.

Segment operating margin was 10.0% in 2017, as compared to 10.8% in 2016. Adjusted segment operating margin was 15.9% in 2017, as compared to 15.1% in 2016. This increase principally reflects gains from our cost-savings program and

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lower direct taxes in Ecuador as well as operation, information technology, marketing and sales costs, which was partially offset by postpaid subscriber acquisition costs driven by a more aggressively competitive environment in Peru.

Central America—Guatemala, El Salvador, Honduras, Nicaragua, Panama and Costa Rica

The number of prepaid wireless subscribers for 2017 increased by 5.4% over 2016, and the number of postpaid wireless subscribers increased by 6.7%, resulting in an increase in the total number of wireless subscribers in our Central America segment of 5.6%, or approximately 842 thousand, to approximately 15.9 million as of December 31, 2017. The number of fixed voice RGUs for 2017 decreased by 0.1% over 2016, the number of broadband RGUs increased by 15.1% and the number of Pay TV RGUs increased by 3.9%, resulting in an increase in total fixed RGUs in our Central America segment of 7.8%, or 419 thousand, to approximately 5.8 million as of December 31, 2017.

Segment operating revenues for 2017 increased by 4.4% over 2016. Adjusted segment operating revenues for 2017 increased by 3.2% over 2016. This increase principally reflects higher mobile data, fixed data and Pay TV revenues in Central America, which was partially offset by decreases in mobile voice and fixed voice in Guatemala, El Salvador, Honduras, Nicaragua and Costa Rica and decreases in mobile voice and Pay TV in Panama. For this purpose, we analyze adjusted segment results in U.S. dollars because it is the functional currency for our operations in El Salvador and Panama, and the currencies in Costa Rica, Guatemala, Honduras and Nicaragua are relatively stable against the U.S. dollar.

Segment operating income for 2017 increased by 37.1% over 2016. Adjusted segment operating income for 2017 increased by 41.2% over 2016. This increase principally reflects an increase of 4.2% in Guatemala, an increase of 10.2% in El Salvador, an increase of 56.2% in Honduras, an increase of 41.2% in Nicaragua, an increase of 30.0% in Panama and an increase of 1.4% in Costa Rica.

Segment operating margin was 11.9%, as compared to 9.0% in 2016. Adjusted segment operating margin was 13.1% in

2017, as compared to 9.6% in 2016. This increase principally reflects lower costs related to maintenance, customer service and customer acquisition.

Caribbean—Dominican Republic and Puerto Rico

The number of prepaid wireless subscribers for 2017 increased by 3.0% over 2016, and the number of postpaid wireless subscribers increased by 4.1%, resulting in an increase in the total number of wireless subscribers in our Caribbean segment of 3.4%, or approximately 184 thousand, to approximately 5.6 million as of December 31, 2017. The number of fixed voice RGUs for 2017 decreased by 1.3% over 2016, the number of broadband RGUs increased by 1.6% and the number of Pay TV RGUs increased by 11.4%, resulting in an increase in total fixed RGUs in our Caribbean segment of 1.4%, or 37 thousand, to approximately 2.7 million as of December 31, 2017.

Segment operating revenues for 2017 decreased by 3.5% over 2016. Adjusted segment operating revenues for 2017 decreased by 5.5% over 2016. This decrease in segment operating revenues principally reflects lower revenues from wireless and fixed voice services in Puerto Rico, which was partially offset by an increase in segment mobile data revenues and an increase in Pay TV revenues in the Dominican Republic. We analyze segment results in U.S. dollars because it is the functional currency in our operations in Puerto Rico, and the currency in the Dominican Republic is relatively stable against the U.S. dollar.

Segment operating income for 2017 decreased by 22.6% over 2016. Adjusted segment operating income for 2017 decreased by 23.8% over 2016. This decrease principally reflects a decrease of 5.7% in the Dominican Republic and a decrease of 102.2% in Puerto Rico.

Segment operating margin was 13.5% in 2017, as compared to 16.8% in 2016. Adjusted segment operating margin was 13.8% in 2017, as compared to 17.2% in 2016. This decrease principally reflects higher unusual costs related to the reconstruction and operation of our networks in the aftermath of Hurricane Maria and bad debt expense in Puerto Rico and higher costs related to upgrades to our information technology systems in the Dominican Republic, which were partially offset by our corporate cost-savings program.

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  RESULTS OF OPERATIONS

United States

The number of prepaid wireless subscribers for 2017 decreased by 11.3% over 2016, or approximately 2.9 million, to approximately 23.1 million total wireless subscribers in the United States as of December 31, 2017.

Segment operating revenues for 2017 increased by 5.5% over 2016. Adjusted segment operating revenues for 2017 increased by 4.1% over 2016. This increase in segment operating revenues principally reflects higher mobile voice and data usage and revenues driven by the success of existing unlimited data plans, principally those offered under our Straight Talk brand and our recently acquired Walmart Family Mobile brand.

Segment operating income for 2017 increased by 138.8% over 2016. Adjusted segment operating income for 2017 increased by 15.0% over 2016.

Segment operating margin was 2.0% in 2017, as compared to 0.9% in 2016. Adjusted segment operating margin was 8.4% in 2017, as compared to 7.6% in 2016. This increase principally reflects a decrease in subscriber acquisition costs.

Europe

The number of prepaid wireless subscribers for 2017 decreased by 10.4% over 2016, and the number of postpaid wireless subscribers increased by 3.6%, resulting in a decrease in the total number of wireless subscribers in our

Europe segment of 0.2%, or approximately 50 thousand, to approximately 20.7 million as of December 31, 2017. The number of fixed voice RGUs for 2017 decreased by 3.7% over 2016, the number of broadband RGUs increased by 3.3% and the number of Pay TV RGUs increased by 10.7%, resulting in an increase in total fixed RGUs in our Europe segment of 2.3%, or 136 thousand, to approximately 6.0 million as of December 31, 2017.

Segment operating revenues for 2017 increased by 7.7% over 2016. Adjusted segment operating revenues for 2017 increased by 4.1% over 2016. This increase in segment operating revenues principally reflects higher revenues in Pay TV as well as mobile and fixed data, which were partially offset by lower revenues from wireless and fixed voice services due to the negative effects of the elimination of retail roaming in the EU in June 2017 and April 2016, as well as losses in the prepaid segment. We analyze segment results in euros because it is the functional currency in our operations in Europe.

Segment operating income for 2017 decreased by 16.0% over 2016. Adjusted segment operating income for 2017 decreased by 16.3% over 2016.

Segment operating margin was 4.8% in 2017, as compared to 6.2% in 2016. Adjusted segment operating margin was 5.0% in 2017, as compared to 6.2% in 2016. The decrease principally reflects increases in costs related to marketing, subscriber acquisitions and local taxes.

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LIQUIDITY AND CAPITAL RESOURCES  

FUNDING REQUIREMENTS

We generate substantial cash flows from our operations. On a consolidated basis, our cash flows from operating activities were Ps.248.3 billion in 2018, compared to Ps.217.8 billion in 2017. Our cash and cash equivalents amounted to Ps.21.7 billion at December 31, 2018, compared to Ps.24.3 billion at December 31, 2017.

We believe our working capital is sufficient for our present requirements. We use the cash that we generate from our operations and from borrowings principally for the following purposes:

• Capital expenditures. We make substantial capital expenditures to continue expanding and improving our networks in each country in which we operate. Our capital expenditures on plant, property and equipment and acquisition or renewal of licenses were Ps.151.8 billion in 2018, Ps.136.7 billion in 2017, and Ps.155.0 billion in 2016. The amount of these capital expenditures varies significantly from year to year, depending on acquisition opportunities, concession renewal schedules and the need for more spectrum. We have budgeted capital expenditures for 2019 of approximately U.S.$8.5 billion (Ps.169.0 billion), which will be primarily funded by our operating activities.

• Acquisitions. In some years, we have made substantial expenditures on acquisitions. In 2019 we entered into agreements to acquire Nextel Brazil, Telefónica Guatemala and Telefónica El Salvador. See “Recent Developments” under Part I in this annual report.

• Indebtedness. We must pay interest on our indebtedness and repay principal when due. As of December 31, 2018, we had approximately Ps.96.2 billion of principal and amortization due in 2019.

• Dividends. We pay regular dividends. We paid Ps.22.4 billion in dividends in 2018 and Ps.16.1 billion in 2017. Our shareholders approved on April 9, 2019 the payment of a Ps.0.35 ordinary cash dividend per share in two installments in 2019. See “Share Ownership and Trading—Dividends” under Part IV in this annual report.

• Share repurchases. We regularly repurchase our own shares. We spent Ps.511.4 million repurchasing our own shares in the open market in 2018 and Ps.1.2 billion in 2017. Our shareholders have authorized additional repurchases, and as of March 31, 2019, we have spent Ps.171 million repurchasing our shares in the open market in 2019, but whether we will continue to do so will depend on our operating cash flow and on various other considerations, including market prices and our other capital requirements.

OFF-BALANCE SHEET ARRANGEMENTS

As of December 31, 2018, we had no off-balance sheet arrangements that require disclosure under applicable SEC regulations.

37

  LIQUIDITY AND CAPITAL RESOURCES

CONTRACTUAL OBLIGATIONS

The following table summarizes certain contractual obligations as of December 31, 2018. Many of our obligations are denominated in currencies other than Mexican pesos. The table does not include accounts payable, pension liabilities, interest payments or payments under derivatives contracts. See note 16 to our audited consolidated financial statements included in this annual report.

PAYMENTS DUE BY PERIOD
			LESS THAN
	Total		1 Year		1-3 Years		4-5 Years		After 5 Years
	(in millions of Mexican pesos)
CONTRACTUAL OBLIGATIONS AS OF DECEMBER 31, 2018
Equipment leases, real estate leases and mobile site rentals	Ps.	138,052	Ps.	24,057	Ps.	37,652	Ps.	26,317	Ps.	50,026
Short-term debt		96,230		96,230		—		—		—
Long-term debt		542,692		—		263,402		53,923		225,367
Purchase obligations		225,085		88,234		123,528		13,323		—
Total	Ps.	1,002,059	Ps.	208,521	Ps.	424,582	Ps.	93,563	Ps.	275,393

Other than the amounts in the table above, we had no other outstanding material purchase commitments as of December 31, 2018. We enter into a number of supply, advertising and other contracts in the ordinary course of business, but those contracts are not material to our liquidity.

BORROWINGS

In addition to cash flows generated from operations, we rely on a combination of borrowings from a range of different sources, including the international capital markets, capital markets in Mexico and other countries where we operate, international and local banks, equipment suppliers and export credit agencies. We seek to maintain access to diverse sources of funding. In managing our funding, we generally seek to keep our leverage, as measured by the ratio of net debt to EBITDA, at a level that is consistent with maintaining the ratings given to our debt by the principal credit rating agencies. Our total consolidated indebtedness as of December 31, 2018 was Ps.638.9 billion, of which Ps.96.2 billion was short-term debt (including the current portion of long- term debt), compared to Ps.697.9 billion as of December 31, 2017.

Management defines net debt as total debt minus cash and cash equivalents, minus marketable securities (including KPN shares) or other short-term investments. As of December 31, 2018, we had net debt of Ps.568.2 billion, compared to Ps.614.5 billion as of December 31, 2017. Without taking into account the effects of derivative financial instruments that we use to manage our interest rate and currency risk, approximately 88.7% of our indebtedness at December 31, 2018 was denominated in currencies other than Mexican pesos (approximately 34.6% of such non-Mexican peso debt in U.S. dollars and 65.4% in other currencies), and approximately 5.9% of our consolidated debt obligations bore interest at floating rates. After the effects of derivative transactions and excluding the debt owned by Telekom Austria, approximately 29.3% of our net debt as of December 31, 2018 was denominated in Mexican pesos.

The weighted average cost of all our third-party debt at December 31, 2018 (excluding commissions and reimbursement of certain lenders for Mexican taxes withheld) was approximately 4.3% per annum.

Our major categories of indebtedness at December 31, 2018 are summarized in the table below. The majority of our consolidated indebtedness is owed by América Móvil and most of the remaining debt is owed by Telekom Austria, in which we own a 51% interest. See also note 14 to our audited consolidated financial statements included in this annual report.

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DEBT
(millions of Mexican pesos)
SENIOR NOTES
DENOMINATED IN U.S. DOLLARS
América Móvil 5.000% Senior Notes due 2019	Ps.	14,762
Telmex 5.500% Senior Notes due 2019		7,428
América Móvil 5.000% Senior Notes due 2020		41,823
América Móvil 3.125% Senior Notes due 2022		31,493
América Móvil 6.375% Senior Notes due 2035		19,315
América Móvil 6.125% Senior Notes due 2037		7,267
América Móvil 6.125% Senior Notes due 2040		39,366
América Móvil 4.375% Senior Notes due 2042		22,635
Total	Ps.	184,089
DENOMINATED IN MEXICAN PESOS
América Móvil 6.000% Senior Notes due 2019	Ps.	10,000
América Móvil 8.600% Domestic Senior Notes due 2020		7,000
América Móvil 6.450% Senior Notes due 2022		22,500
América Móvil 7.125% Senior Notes due 2024		11,000
América Móvil 0.000% Domestic Senior Notes due 2025		4,629
América Móvil 8.460% Senior Notes due 2036		7,872
Telmex 8.360% Domestic Senior Notes due 2037		5,000
Total	Ps.	68,001
DENOMINATED IN EURO
América Móvil 4.125% Senior Notes due 2019	Ps.	22,559
América Móvil B.V. 0.000% Exchangeable Bonds due 2020		64,108
América Móvil 3.000% Senior Notes due 2021		22,558
TKA 3.125% Senior Notes due 2021		17,569
TKA 4.000% Senior Notes due 2022		18,028
América Móvil 4.750% Senior Notes due 2022		16,919
TKA 3.500% Senior Notes due 2023		7,132
América Móvil 3.259% Senior Notes due 2023		16,919
América Móvil 1.500% Senior Notes due 2024		19,175
TKA 1.500% Senior Notes due 2026		16,919
América Móvil 2.125% Senior Notes due 2028		14,663
Total	Ps.	236,549
DENOMINATED IN POUND STERLING
América Móvil 5.000% Senior Notes due 2026	Ps.	12,551
América Móvil 5.750% Senior Notes due 2030		16,316
América Móvil 4.948% Senior Notes due 2033		7,530
América Móvil 4.375% Senior Notes due 2041		18,826
Total	Ps.	55,223

39

       LIQUIDITY AND CAPITAL RESOURCES  

DEBT
(millions of Mexican pesos)
DENOMINATED IN JAPANESE YEN
América Móvil 2.950% Senior Notes due 2039	Ps.	2,335
Total	Ps.	2,335
DENOMINATED IN CHILEAN PESOS
América Móvil 3.961% Senior Notes due 2035	Ps.	3,905
Total	Ps.	3,905
DENOMINATED IN BRAZILIAN REAIS
Claro Brasil 102.400% of CDI Domestic Senior Notes due 2019	Ps.	5,080
Claro Brasil 103.250% of CDI Domestic Senior Notes due 2019		1,829
Claro Brasil 103.900% of CDI Domestic Senior Notes due 2019		5,080
Claro Brasil 102.900% of CDI Domestic Senior Notes due 2020		7,619
Claro Brasil 104.000% of CDI Domestic Senior Notes due 2021		5,587
Claro Brasil 104.250% of CDI Domestic Senior Notes due 2021		7,696
Total	Ps.	32,891
HYBRID NOTES
DENOMINATED IN EURO:
América Móvil Euro NC10 (Euro Series B) Capital Securities due 2073	Ps.	12,407
Total	Ps.	12,407
DENOMINATED IN POUND STERLING
América Móvil GBP NC7 Capital Securities due 2073	Ps.	13,806
Total	Ps.	13,806
BANK DEBT AND OTHER
DENOMINATED IN U.S. DOLLARS	Ps.	11,699
DENOMINATED IN MEXICAN PESOS	Ps.	4,500
DENOMINATED IN EUROS	Ps.	5,527
DENOMINATED IN CHILEAN PESOS	Ps.	64
DENOMINATED IN BRAZILIAN REAIS	Ps.	27
DENOMINATED IN PERUVIAN SOLES	Ps.	7,899
Total	Ps.	29,716
Total Debt	Ps.	638,922
Less short-term debt and current portion of long-term debt	Ps.	96,230
Total Long-term Debt	Ps.	542,692
EQUITY:
Capital stock	Ps.	96,338
Total retained earnings		237,255
Other comprehensive income (loss) items		(137,598	)
Non-controlling interest		49,877
Total Equity	Ps.	245,872
Total Capitalization (total long-term debt plus equity)	Ps.	788,564

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Additional information about certain categories of our indebtedness is provided below:

• Mexican peso-denominated international notes. Our 8.46% senior notes due 2036 are denominated in Mexican pesos, but all amounts in respect of the notes are payable in U.S. dollars, unless a holder of notes elects to receive payment in Mexican pesos in accordance with specified procedures.

• Mexican peso-denominated domestic notes. Our domestic senior notes (certificados bursátiles) sold in the Mexican capital markets have varying maturities, ranging from 2019 through 2037, and bear interest at fixed rates.

• Global peso notes program. The global peso notes program was established in November 2012. Since its establishment, we have issued peso-denominated notes that can be distributed and traded on a seamless basis in Mexico and internationally. The notes are registered with the SEC in the United States and with the CNBV in Mexico.

• International notes. We have outstanding debt securities in the international markets denominated in U.S. dollars, pound sterling and euros. We have also issued debt securities in the local markets in Switzerland and Japan.

• Hybrid notes. We have outstanding two series of Capital Securities maturing in 2073: one series denominated in euros totaling €550 million, and one series denominated in pound sterling in the amount of £550 million. The Capital Securities are subject to redemption at our option at varying dates beginning in 2023 for the euro-denominated series and beginning in 2020 for the sterling-denominated series. Our hybrid notes are deeply subordinated, and when they were issued, the principal rating agencies stated that they would treat only half of the principal amount as indebtedness for purposes of evaluating our leverage (an analysis referred to as 50.0% equity credit).

• Bank loans. At December 31, 2018, we had approximately Ps.29.7 billion outstanding under a number of bank facilities bearing interest at fixed and variable rates. We also have two revolving syndicated credit facilities—one for U.S.$2.5 billion expiring in November 2019 and one for the Euro equivalent of U.S.$2.0 billion expiring in May 2021. As long as the facilities are committed, a commitment fee is paid. As of December 31, 2018, these

credit facilities were undrawn. Both facilities include covenants that limit our ability to incur secured debt, to effect a merger in which the surviving entity would not be América Móvil or to sell substantially all of our assets. In addition, both facilities require us to maintain a consolidated ratio of debt to EBITDA not greater than 4.0 to 1.0 and a consolidated ratio of EBITDA to interest expense not less than 2.5 to 1.0. As of the date of this annual report, we are in compliance with these covenants. Telekom Austria also has an undrawn revolving syndicated credit facility for €1.0 billion (the “TKA Facility”) expiring in November 2019. The TKA Facility includes covenants that limit Telekom Austria’s ability to incur secured debt, effect certain mergers or sell substantially all of its assets and our ability to transfer control over, or reduce our share ownership in, Telekom Austria. For more information, see note 14 to our audited consolidated financial statements included in this annual report.

• Options involving KPN and TKA shares. The Company has entered into certain option contracts related to shares that are or have been a strategic investment for the Company. These options include a sale of call options related to our KPN shares with an exercise period that will expire in May 2020 and the sale of a cash-settled put option related to TKA shares that will expire in August 2023. See note 7 to our audited consolidated financial statements included in this annual report.

Some of the public securities issued by América Móvil in international and Mexican capital markets are guaranteed by Telcel. As of December 31, 2018, we had, on an unconsolidated basis, unsecured and unsubordinated indebtedness of approximately Ps.509.7 billion (U.S.$25.9 billion), excluding guarantees of subsidiaries’ indebtedness. As of December 31, 2018, our subsidiaries had indebtedness (excluding guarantees of indebtedness of us and our other subsidiaries) of approximately Ps.129.2 billion (U.S.$6.6 billion).

41

  RISK MANAGEMENT

We regularly assess our interest rate and currency exchange exposures in order to determine how to manage the risk associated with these exposures. We have indebtedness denominated in currencies other than the currency of our operating environments, and we have expenses for operations and for capital expenditures in a variety of currencies. We use derivatives to adjust the resulting exchange rate and interest rate exposures. We do not use derivatives to hedge the exchange rate exposures that arise from having operations in different countries.

Our practices vary from time to time depending on our judgment of the level of risk, expectations as to exchange or interest rate movements and the costs of using derivative financial instruments. We may stop using derivative financial instruments or modify our practices at any time.

As of December 31, 2018, we had derivatives positions with an aggregate net fair value liability of Ps.11.8 billion, which are described in note 7 to our audited consolidated financial statements. For additional information, see note 2 v) to our audited consolidated financial statements included in this annual report.

42

CRITICAL ACCOUNTING POLICIES AND ESTIMATES  

USE OF ESTIMATES IN CERTAIN ACCOUNTING POLICIES

In preparing our financial statements, we make estimates concerning a variety of matters. Some of these matters are highly uncertain, and our estimates involve judgments we make based on the information available to us. In the discussion below, we have identified several of these matters for which our financial presentation would be materially affected if either (i) we used different estimates that we could reasonably have used or (ii) in the future, we change our estimates in response to changes that are reasonably likely to occur.

The discussion addresses only those estimates that we consider most important based on the degree of uncertainty and the likelihood of a material impact if we used a different estimate. There are many other areas in which we use estimates about uncertain matters, but the reasonably likely effect of changed or different estimates is not material to our financial presentation.

ESTIMATED USEFUL LIVES OF PLANT, PROPERTY AND EQUIPMENT

We estimate the useful lives of particular classes of plant, property and equipment in order to determine the amount of depreciation expense to be recorded in each period. Depreciation expense is a significant element of our costs and expenses, amounting in 2018 to Ps.129.1 billion, or 14.4% of our operating costs and expenses. See note 10 to our audited consolidated financial statements included in this annual report.

We currently depreciate most of our property, plant and equipment based on an estimated useful life determined upon the expected particular conditions of operations and maintenance in each of the countries in which we operate.

The estimates are based on our historical experience with similar assets, anticipated technological changes and other factors, taking into account the practices of other telecommunications companies. We review estimated useful lives each year to determine whether they should be changed, and, at times, we have changed them for particular classes of assets. We may shorten the estimated useful life of an asset class in response to technological changes,

changes in the market or other developments, which would result in higher depreciation expense.

IMPAIRMENT OF LONG-LIVED ASSETS

We have large amounts of long-lived assets, including property, plant and equipment, intangible assets, investments in associates and goodwill, on our balance sheet. Under IFRS, we are required to test long-lived assets for impairment when circumstances indicate a potential impairment or, in some cases, at least on an annual basis. The impairment analysis for long-lived assets requires us to estimate the recovery value of the asset, which is the greater of its fair value (minus any disposal costs) and its value in use. To estimate the fair value of a long-lived asset, we typically take into account recent market transactions, or, if no such transactions can be identified, we use a valuation model that requires the making of certain assumptions and estimates. Similarly, to estimate the value in use of long-lived assets, we typically make various assumptions about the future prospects for the business to which the asset relates, consider market factors specific to that business and estimate discounted future cash flows to be generated by that business. Based on this impairment analysis, including all assumptions and estimates related thereto, as well as guidance provided by IFRS relating to the impairment of long-lived assets, we determine whether we need to recognize an impairment to reduce the carrying value of the asset as stated on our balance sheet. Assumptions and estimates about future values and remaining useful lives are complex and often subjective. They can be affected by a variety of factors, including external factors, such as industry and economic trends, and internal factors, such as changes in our business strategy and our internal forecasts. Different assumptions and estimates could materially impact our reported financial results. More conservative assumptions of the anticipated future benefits from these businesses could result in impairment charges, which would decrease net income and result in lower asset values on our balance sheet. Conversely, less conservative assumptions could result in lower or no impairment charges, higher net income and higher asset values. See note 2 ab) to our audited consolidated financial statements included in this annual report.

43

     CRITICAL ACCOUNTING POLICIES AND ESTIMATES

DEFERRED INCOME TAXES

We are required to estimate our income taxes in each of the jurisdictions in which we operate. This process involves the jurisdiction-by-jurisdiction estimation of actual current tax exposure and the assessment of temporary differences resulting from the differing treatment of certain items, such as accruals and amortization, for tax and financial reporting purposes, as well as net operating loss carry forwards and other tax credits. These items result in deferred tax assets and liabilities, which are included in our consolidated balance sheets. We must assess, in the course of our tax planning procedures, the fiscal years of the reversal of our deferred tax assets and liabilities, and if there will be future taxable profits in those periods to support the recognition of the deferred tax assets. Significant management judgment is required in determining our provisions for income taxes, deferred tax assets and liabilities. The analysis is based on estimates of future taxable income in the jurisdictions in which the group operates and the period over which the deferred tax assets and liabilities will be recoverable or settled. If actual results differ from these estimates, or if we adjust these estimates in future periods, our financial position and results of operations may be materially affected.

We record deferred tax assets based on the amount that we believe is more likely than not to be realized. In assessing the future realization of deferred tax assets, we consider future taxable income and ongoing tax planning strategies. In the event that our estimates of projected future taxable income and benefits from tax planning strategies are lowered, or changes in current tax regulations are enacted that would impose restrictions on the timing or the extent of our ability to utilize the tax benefits of net operating loss carry forwards in the future, an adjustment to the recorded amount of deferred tax assets would be made.

ACCRUALS

Accruals are recorded when, at the end of the period, we have a present obligation as a result of past events whose settlement requires an outflow of resources that is considered probable and can be measured reliably. This

obligation may be legal or constructive, arising from, but not limited to, regulation, contracts, common practice or public commitments which have created a valid expectation for third parties that we will assume certain responsibilities. The amount recorded is the best estimation performed by our management in respect of the expenditure that will be required to settle the obligations, considering all the information available at the date of our financial statements, including the opinion of external experts, such as legal advisors or consultants. Accruals are adjusted to account for changes in circumstances for ongoing matters and the establishment of additional accruals for new matters.

If we are unable to reliably measure the obligation, no accrual is recorded and information is then presented in the notes to our audited consolidated financial statements. Because of the inherent uncertainties in this estimation, actual expenditures may be different from the originally estimated amount recognized.

LABOR OBLIGATIONS

We recognize liabilities on our balance sheet and expenses in our statement of comprehensive income to reflect our obligations related to our post-retirement seniority premiums, pension and retirement plans in the countries in which we operate and offer defined contribution and benefit pension plans. The amounts we recognize are determined on an actuarial basis that involves many estimates and assumptions for post-retirement pension and termination benefits in accordance with IFRS.

We use estimates in four specific areas that have a significant effect on these amounts: (i) the rate of return we assume our labor obligation plans will achieve on their investments, (ii) the rate of increase in salaries that we assume we will observe in future years, (iii) the discount rates that we use to calculate the present value of our future obligations and (iv) the expected rate of inflation. The assumptions we have applied are identified in note 17 to our audited consolidated financial statements included in this annual report. These estimates are determined based on actuarial studies performed by independent experts using the projected unit-credit method.

44

PART III RISK FACTORS

  RISK FACTORS       

RISKS RELATING TO OUR OPERATIONS

Competition in the telecommunications industry is intense and could adversely affect the revenues and profitability of our operations

Our businesses face substantial competition. We expect that competition will intensify in the future as a result of the entry of new competitors, the development of new technologies, products and services and convergence. We also expect consolidation in the telecommunications industry, as companies respond to the need for cost reduction and additional spectrum. This trend may result in larger competitors with greater financial, technical, promotional and other resources to compete with our businesses.

Among other things, our competitors could:

• provide higher handset subsidies;

• offer higher commissions to retailers;

• provide free airtime or other services (such as internet access);

• offer services at lower costs through double, triple and quadruple play packages or other pricing strategies;

• expand their networks faster; or

• develop and deploy improved technologies faster, such as 5G LTE technology.

Competition can lead us to increase advertising and promotional spending and to reduce prices for services and handsets. These developments may lead to lower operating margins, greater choices for customers and increasing movement of customers among competitors, which may make it difficult for us to retain or add new customers. The cost of adding new customers may also continue to increase, reducing profitability even if customer growth continues.

Our ability to compete successfully will depend on our coverage, the quality of our network and service, our rates, customer service, effective marketing, our success in selling double, triple and quadruple play packages and our ability to anticipate and respond to various competitive factors affecting the telecommunications industry, including new

services and technologies, changes in consumer preferences, demographic trends, economic conditions and discount pricing strategies by competitors.

If we are unable to respond to competition and compensate for declining prices by adding new customers, increasing usage and offering new services, our revenues and profitability could decline.

Governmental or regulatory actions could adversely affect our operations

Our operations are subject to extensive government regulation and can be adversely affected by changes in law, regulation or regulatory policy. The licensing, construction, operation, sale, resale and interconnection arrangements of telecommunications systems in Latin America and elsewhere are regulated to varying degrees by government or regulatory authorities. Any of these authorities having jurisdiction over our businesses could adopt or change regulations or take other actions that could adversely affect our operations. In particular, the regulation of prices that operators may charge for their services and environmental matters, including renewable energy and climate change regulation, could have a material adverse effect by reducing our profit margins. See “Regulation” under Part VI for a discussion on the functional separation of Telmex and Telnor wholesale services, “Legal Proceedings” under Part VII and Note 16 to our audited consolidated financial statements included in this annual report.

In addition, changes in political administrations could lead to the adoption of policies concerning competition and taxation of communications services. For example, since 2013, Mexico has implemented reforms to the telecommunications sector that aim to promote more competition and investment by imposing asymmetric regulation upon economic agents deemed “preponderant or dominant.” In other countries, we could also face policies such as preferences for local over foreign ownership of communications licenses and assets or for government over private ownership, which could make it more cumbersome or impossible for us to continue to develop our businesses. Restrictions such as those described above could result in lower revenues and require capital investments, all of which could materially adversely affect our businesses and results of operations.

48

Our failure to meet or maintain quality of service goals and standards could result in fines and other adverse consequences

The terms of the concessions under which our subsidiaries operate require them to meet certain service quality goals, including, for example, minimum call completion rates, maximum busy circuits rates, operator availability and responsiveness to repair requests. Failure to meet service quality obligations in the past has resulted in the imposition of material fines by regulatory entities. We are also subject to and may be subject to additional claims by customers, including class actions, seeking remedies for service problems. Our ability to comply with these obligations in the future may be affected by factors beyond our control and, accordingly, we cannot assure that we will be able to comply with them.

Dominant carrier related regulations could adversely affect our business by limiting our ability to pursue competitive and profitable strategies

Our regulators are authorized to impose specific requirements as to rates (including termination rates), quality of service, access to active or passive infrastructure and information, among other matters, on operators that are determined to have substantial market power in a specific market. We cannot predict what steps regulatory authorities might take in response to determinations regarding substantial market power in the countries in which we operate. However, adverse determinations against our subsidiaries could result in material restrictions on our operations. We may also face additional regulatory restrictions and scrutiny as a result of our provision of combined services.

If dominant carrier regulations are imposed on our business in the future, they could likely reduce our flexibility to adopt competitive market policies and impose specific tariff requirements or other special regulations on us, such as additional requirements regarding disclosure of information or quality of service. Any such new regulation could have a material adverse effect on our operations.

Changes in the regulatory framework for telecommunications services in Mexico may have a material adverse effect on our business and results of operations

The Mexican legal framework for the regulation of telecommunications and broadcasting services has changed, beginning with constitutional amendments in 2013, implementing legislation in 2014, and the establishment in 2014 of a new regulator, the Federal Telecommunications Institute (Instituto Federal de Telecomunicaciones, or the “IFT”). The IFT determined in 2014 that our operating subsidiaries in Mexico are part of an “economic interest group” that is a “preponderant economic agent” in the Mexican telecommunications sector, and, based on this determination, the IFT has imposed extensive asymmetric regulations on our Mexican fixed-line and wireless businesses. The asymmetric regulations took effect in 2015 and were amended in 2017, when the IFT added new requirements, including the functional separation of certain assets used to provide local loop unbundling services. For further information, see “Regulation” under Part III of this annual report. The IFT measures and biennial reviews of the asymmetric measures applicable to us have adversely affected the results of our Mexican operations, and we expect that those effects will continue.

We must continue to acquire additional radio spectrum capacity and upgrade our networks in order to expand our customer base and maintain the quality of our wireless services

Licensed radio spectrum is essential to our growth and the quality of our wireless services and for the operation and deployment of our networks, including new generation networks such as 5G LTE technology, to offer improved data and value-added services. We obtain most of our radio spectrum through auctions conducted by governments of the countries in which we operate. Participation in spectrum auctions in most of these countries requires prior government authorization, and we may be subject to caps on our ability to acquire additional spectrum. Our inability to acquire additional radio spectrum capacity could affect our ability to compete successfully because it could result in,

49

  RISK FACTORS

among other things, a decrease in the quality of our network and service and in our ability to meet the demands of our customers.

In the event we are unable to acquire additional radio spectrum capacity, we can increase the density of our network by building more cell and switch sites, but such measures are costly and may be subject to local restrictions and regulatory approvals, and they would not meet our needs as effectively.

We have concessions and licenses for fixed terms, and the government may revoke or terminate them as well as reacquire the assets under our concession under various circumstances, some of which are beyond our control

Our concessions and licenses have specified terms, ranging typically from five to 20 years, and are generally subject to renewal upon payment of a fee, but renewal is not assured. The loss of, or failure to renew, any one concession could have a material adverse effect on our business and results of operations. Our ability to renew concessions and the terms of renewal are subject to a number of factors beyond our control, including the prevalent regulatory and political environment at the time of renewal. Fees are typically established at the time of renewal. As a condition for renewal, we may be required to agree to new and stricter terms and service requirements. In some of the jurisdictions where we operate and under certain circumstances, mainly in connection with fixed services, we may be required to transfer certain assets covered by some of our concessions to the government pursuant to valuation methodologies that vary in each jurisdiction. It is uncertain whether reversion would ever be applied in many of the jurisdictions where we operate and how reversion provisions would be interpreted in practice. For further information, see “Regulation” under Part VI of this annual report and note 16 to our audited consolidated financial statements included in this annual report.

In addition, the regulatory authorities in the jurisdictions in which we operate can revoke our concessions under certain circumstances. In Mexico, for example, the Federal Law on Telecommunications and Broadcasting gives the

government the right to expropriate our concessions or to take over the management of our networks, facilities and personnel in cases of failures to meet obligations under our concession agreements, imminent danger to national security, internal peace or the national economy, natural disasters and public unrest. See “Regulation” under Part VI of this annual report.

We continue to look for acquisition opportunities, and any future acquisitions and related financing could have a material effect on our business, results of operations and financial condition

We continue to look for investment opportunities in telecommunications and related companies worldwide, including in markets where we are already present, and we often have several possible acquisitions under consideration. Any future acquisitions, and related financing and acquired indebtedness, could have a material effect on our business, results of operations and financial condition, but we cannot provide assurances that we will complete any of them. In addition, we may incur significant costs and expenses as we integrate these companies in our systems, controls and networks.

We are subject to significant litigation

Some of our subsidiaries are subject to significant litigation that, if determined adversely to our interests, may have a material adverse effect on our business, results of operations, financial condition or prospects. Our significant litigation is described in “Regulation” under Part VI and in note 16 to our audited consolidated financial statements included in this annual report.

We are contesting significant tax assessments

We and some of our subsidiaries have been notified of tax assessments for significant amounts by the tax authorities of the countries in which we operate, especially in Brazil, Mexico and Ecuador. The tax assessments relate to, among other things, alleged improper deductions and underpayments. We are contesting these tax assessments in several administrative and legal proceedings, and our challenges are at various stages. If determined adversely to

50

us, these proceedings may have a material adverse effect on our business, results of operations, financial condition or prospects. In addition, in some jurisdictions, challenges to tax assessments require the posting of a bond or security for the contested amount, which may reduce our flexibility in operating our business. Our significant tax assessments are described in note 16 to our audited consolidated financial statements included in this annual report.

Failure to comply with anti-corruption, anti- bribery and anti-money laundering laws could harm our reputation, subject us to substantial fines and adversely affect our business

We operate in multiple jurisdictions and are subject to complex regulatory frameworks with increased enforcement activities worldwide. Our governance and compliance processes may not prevent future breaches of legal, accounting or governance standards and regulations. We may be subject to breaches of our code of ethics, anti-corruption policies and business conduct protocols and to instances of fraudulent behavior, corrupt practices and dishonesty by our employees, contractors or other agents. Our failure to comply with applicable laws and other regulatory requirements could harm our reputation, subject us to substantial fines, sanctions or penalties and adversely affect our business and ability to access financial markets.

A system failure could cause delays or interruptions of service, which could have an adverse effect on our operations

We need to continue to provide our subscribers with a reliable service over our network. Some of the risks to our network and infrastructure include the following:

• physical damage to access lines and fixed networks;

• power surges or outages;

• natural disasters;

• climate change;

• malicious actions, such as theft or misuse of customer data;

• limitations on the use of our radio bases;

• software defects;

• human error; and

• disruptions beyond our control.

In Brazil, for example, our satellite operations may be affected if we experience a delay in launching new satellites to replace those currently in use when they reach the end of their operational lives. Such delay may occur because of, among other reasons, construction delays, unavailability of launch vehicles and/or launch failures. In addition, in 2017, our operations in Puerto Rico suffered significant damage in the aftermath of Hurricane Maria, and our operations in Mexico experienced network overloads and power outages following the earthquake on September 19, 2017.

We have instituted measures to reduce these risks. However, there is no assurance that any measures we implement will be effective in preventing system failures under all circumstances. System failures may cause interruptions in services or reduced capacity for our customers, either of which may have an adverse effect on our operations due to, for example, increased expenses, potential legal liability, loss of existing and potential subscribers, reduced user traffic, decreased revenues and reputational harm.

Cybersecurity incidents and other breaches of network or information technology security could have an adverse effect on our business and our reputation

Cybersecurity incidents, and other tactics designed to gain access to and exploit sensitive information by breaching critical systems of large companies, are evolving and have been increasing in both sophistication and occurrence in recent years. While we employ a number of measures to prevent, detect and mitigate such incidents, there is no guarantee that we will be able to adequately anticipate or prevent one. Cybercrime, including attempts to overload our servers with denial- of-service attacks, theft, social engineering, phishing, ransomware or similar disruptions from unauthorized access or attempted unauthorized access to our systems could result in the destruction, misuse or release of personal information or other sensitive data. As of the date of this annual report, we have no knowledge of any significant compromise or material financial or data loss related to a cybersecurity incident.

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  RISK FACTORS

However, it is difficult to detect or prevent evolving forms of cybersecurity incidents, and our systems, and those of our third-party service providers and of our customers, are vulnerable to cybersecurity incidents.

In the event that our systems are breached or damaged for any reason, we may suffer loss or unavailability of data and interruptions to our business operations. If such an event occurs, the unauthorized disclosure, loss or unavailability of data and the disruption to our fixed-line or wireless networks may have a material adverse effect on our business and results of operations. The costs associated with a cybersecurity incident could include increased expenditures on information and cybersecurity measures, damage to our reputation, loss of existing customers and business partners and lead to financial losses from remedial actions and potential liability, including possible litigation and sanctions. Any of these occurrences may result in a material adverse effect on our results of operations and financial condition.

Failure to achieve proper data governance could lead to data mismanagement

We process large amounts of personally identifiable information of customers and employees and are subject to various compliance, security, privacy, data quality and regulatory requirements. Failure to achieve proper data governance could lead to data mismanagement which in turn could result in data loss, regulatory investigations or sanctions, and cybersecurity risk.

If our churn rate increases, our business could be negatively affected

The cost of acquiring a new subscriber is much higher than the cost of maintaining an existing subscriber. Accordingly, subscriber deactivations, or “churn,” could have a material negative impact on our operating income, even if we are able to obtain one new subscriber for each lost subscriber. A substantial majority of our subscribers are prepaid, and we do not have long-term contracts with them. Our average churn rate on a consolidated basis was 4.2% for the year ended December 31, 2018 and 4.1% for the year ended December 31, 2017. If we experience an increase in our churn rate, our ability to achieve revenue growth could be materially impacted. In addition, a decline in general

economic conditions could lead to an increase in churn, particularly among our prepaid subscribers.

We rely on key suppliers to provide equipment that we need to operate our business

We rely upon various key suppliers to provide us with handsets, network equipment or services, which we need to expand and operate our business. Our key suppliers include Huawei, Ericsson and Alcatel. If these suppliers fail to provide equipment or service to us on a timely basis, we could experience disruptions, which could have an adverse effect on our revenues and results of operations. In addition, we might be unable to satisfy requirements under our concessions.

Government or regulatory actions with respect to certain suppliers may impact us. For example, the government of the United States and Canada, among others, are currently conducting a regulatory review of certain international suppliers of network equipment and technologies to evaluate potential risks. We are currently unable to predict the outcome of such reviews, including any possible restrictions placed on our key suppliers , and as a result we cannot determine their potential impact on our business.

Our ability to pay dividends and repay debt depends on our subsidiaries’ ability to pay dividends and make other transfers to us

We are a holding company with no significant assets, other than the shares of our subsidiaries and our holdings of cash and cash equivalents. Our ability to pay dividends and repay debt depends on the continued transfer to us of dividends and other income from our subsidiaries. The ability of our subsidiaries to pay dividends and make other transfers to us may be limited by various regulatory, contractual and legal constraints that affect them.

We may fail to realize the benefits anticipated from acquisitions, divestments and significant investments we make from time to time

The business growth opportunities, revenue benefits, cost savings and other benefits we anticipated to result from our acquisitions, divestments and significant investments may not be achieved as expected, or may be delayed. Our

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divestments may also adversely affect our prospects. For example, we may be unable to fully implement our business plans and strategies for the combined businesses due to regulatory limitations, and we may face regulatory restrictions in our provision of combined services in some of the countries in which we operate. To the extent that we incur higher integration costs or achieve lower revenue benefits or fewer cost savings than expected, or if we are required to recognize impairments of acquired assets, investments or goodwill, our results of operations and financial condition may suffer.

A downgrade of Mexico’s credit rating could affect us

Credit rating agencies regularly evaluate Mexico and its sovereign rating based on various factors including macroeconomic trends, tax and budgetary conditions and indebtedness metrics. If Mexico’s sovereign credit rating is downgraded by credit rating agencies, the rating of our securities may also be downgraded, which could negatively affect our financing costs and the market price of our securities.

RISKS RELATING TO THE TELECOMMUNICATIONS INDUSTRY GENERALLY

Changes in the telecommunications industry could affect our future financial performance

The telecommunications industry continues to experience significant changes as new technologies are developed that offer subscribers an array of choices for their communications needs. These changes include, among others, regulatory changes, evolving industry standards, ongoing improvements in the capacity and quality of digital technology, shorter development cycles for new products and changes in end-user needs and preferences. There is uncertainty as to the pace and extent of growth in subscriber demand, and as to the extent to which prices for airtime, broadband access, Pay TV and fixed-line rental may continue to decline. Our ability to compete in the delivery of high-quality internet and broadband services is particularly important, given the increasing contribution of revenues from data services to our overall growth. If we are unable to

meet future advances in competing technologies on a

timely basis or at an acceptable cost, we could lose subscribers to our competitors. In general, the development of new services in our industry requires us to anticipate and respond to the varied and continually changing demands of our subscribers. It also requires significant capital expenditure, including investment in the continual maintenance and upgrading of our networks, in order to expand coverage, increase our capacity to absorb higher bandwidth usage and adapt to new technologies. We may not be able to accurately predict technological trends or the success of new services in the market. In addition, there could be legal or regulatory restraints to our introduction of new services. If these services fail to gain acceptance in the marketplace, or if costs associated with implementation and completion of the introduction of these services materially increase, our ability to retain and attract subscribers could be adversely affected. This is true across many of the services we provide, including wireless and cable technology.

The intellectual property used by us, our suppliers or service providers may infringe on intellectual property rights owned by others

Some of our products and services use intellectual property that we own or license from others. We also provide content we receive from content producers and distributors, such as ringtones, text games, video games, video, including TV programs and movies, wallpapers or screensavers, and we outsource services to service providers, including billing and customer care functions, that incorporate or utilize intellectual property. We and some of our suppliers, content distributors and service providers have received, and may receive in the future, assertions and claims from third parties that the content, products or software utilized by us or our suppliers, content producers and distributors and service providers infringe on the patents or other intellectual property rights of these third parties. These claims could require us or an infringing supplier, content distributor or service provider to cease engaging in certain activities, including selling, offering and providing the relevant products and services. Such claims and assertions also could subject us to costly litigation and significant liabilities for damages or royalty payments, or require us to cease certain activities or prevent us from selling certain products or services.

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  RISK FACTORS

Concerns about health risks relating to the use of wireless handsets and base stations may adversely affect our business

Portable communications devices have been alleged to pose health risks, including cancer, due to radio frequency emissions. Lawsuits have been filed in the United States against certain participants in the wireless industry alleging various adverse health consequences as a result of wireless phone usage, and our subsidiaries may be subject to similar litigation in the future. Research and studies are ongoing, and there can be no assurance that further research and studies will not demonstrate a link between radio frequency emissions and health concerns. Any negative findings in these studies could adversely affect the use of wireless technology and, as a result, our future financial performance.

Developments in the telecommunications sector have resulted, and may result, in substantial write-downs of the carrying value of certain of our assets

Where the circumstances require, we review the carrying value of each of our assets, subsidiaries and investments in associates to assess whether those carrying values can be supported by the future discounted cash flows expected to be derived from such assets. Whenever we consider that due to changes in the economic, regulatory, business or political environment, our goodwill, investments in associates, intangible assets or fixed assets may be impaired, we consider the necessity of performing certain valuation tests, which may result in impairment charges. The recognition of impairments of tangible, intangible and financial assets could adversely affect our results of operations. See “Critical Accounting Policies and Estimates—Impairment of Long-Lived Assets” under Part II of this annual report.

RISKS RELATING TO OUR CONTROLLING SHAREHOLDERS, CAPITAL STRUCTURE AND TRANSACTIONS WITH AFFILIATES

Members of one family may be deemed to control us and may exercise their control in a manner that may differ from the interest of other shareholders

Based on reports of beneficial ownership of our shares filed with the SEC, Carlos Slim Helú, a member of our Board of Directors, together with his sons, daughters and grandchildren (together, the “Slim Family”), including his two sons, Carlos Slim Domit and Patrick Slim Domit, who serve as the Chairman and Vice Chairman of our Board of Directors, respectively, may be deemed to control us. The Slim Family may be able to elect a majority of the members of our Board of Directors and to determine the outcome of other actions requiring a vote of our shareholders. The interests of the Slim Family may diverge from the interests of our other investors.

We have significant transactions with affiliates

We engage in various transactions with Telesites, S.A.B. de C.V. (“Telesites”) and certain subsidiaries of Grupo Carso, S.A.B. de C.V. (“Grupo Carso”) and Grupo Financiero Inbursa, S.A.B. de C.V. (“Grupo Financiero Inbursa”), all which may be deemed for certain purposes to be under common control with América Móvil.

These transactions occur in the ordinary course of business. Transactions with affiliates may create the potential for conflicts of interest.

We also make investments together with related parties, sell investments to related parties and buy investments from related parties. For more information about our transactions with affiliates, see “Related Party Transactions” under Part IV of this annual report.

Our bylaws restrict transfers of shares in some circumstances

Our bylaws provide that any acquisition or transfer of more than 10.0% of our capital stock by any person or group of persons acting together requires the approval of our Board of Directors. You may not acquire or transfer more than

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10.0% of our capital stock without the approval of our Board of Directors. See “Bylaws—Restrictions of Certain Transfers” under Part IV of this annual report.

The protections afforded to minority shareholders in Mexico are different from those in the United States

Under Mexican law, the protections afforded to minority shareholders are different from those in the United States. In particular, the law concerning fiduciary duties of directors is not as fully developed as in other jurisdictions, the procedure for class actions is different, and there are different procedural requirements for bringing shareholder lawsuits. As a result, in practice it may be more difficult for minority shareholders of América Móvil to seek remedies against us or our directors or controlling shareholders than it would be for shareholders of a company incorporated in another jurisdiction, such as the Delaware.

Holders of L Shares and L Share ADSs have limited voting rights

Our bylaws provide that holders of L Shares are not permitted to vote, except on such limited matters as, among others, the transformation or merger of América Móvil or the cancellation of registration of the L Shares with the Mexican Securities Registry (Registro Nacional de Valores, or “RNV”) maintained by the CNBV or any stock exchange on which they are listed. If you hold L Shares or L Share ADSs, you will not be able to vote on most matters, including the declaration of dividends, which are subject to a shareholder vote in accordance with our bylaws.

Holders of ADSs are not entitled to attend shareholders’ meetings, and they may only vote through the depositary

Under our bylaws, a shareholder is required to deposit its shares with a custodian in order to attend a shareholders’ meeting. A holder of ADSs will not be able to meet this requirement and, accordingly, is not entitled to attend shareholders’ meetings. A holder of ADSs is entitled to instruct the depositary as to how to vote the shares represented by ADSs, in accordance with procedures provided for in the deposit agreements, but a holder of ADSs will not be able to vote its shares directly at a shareholders’ meeting or to appoint a proxy to do so.

Our bylaws may only be enforced in Mexico

Our bylaws provide that legal actions relating to the execution, interpretation or performance of the bylaws may be brought only in Mexican courts. As a result, it may be difficult for non-Mexican shareholders to enforce their shareholder rights pursuant to the bylaws.

It may be difficult to enforce civil liabilities against us or our directors, officers and controlling persons

América Móvil is organized under the laws of Mexico, with its principal place of business in Mexico City, and most of our directors, officers and controlling persons reside outside the United States. In addition, all or a substantial portion of our assets and their assets are located outside of the United States. As a result, it may be difficult for investors to effect service of process within the United States on such persons or to enforce judgments against them, including in any action based on civil liabilities under U.S. federal securities laws. There is doubt as to the enforceability against such persons in Mexico, whether in original actions or in actions to judgments of U.S. courts, of liabilities based solely on U.S. federal securities laws.

You may not be entitled to participate in future preemptive rights offerings

Under Mexican law, if we issue new shares for cash as part of certain capital increases, we must grant our shareholders the right to purchase a sufficient number of shares to maintain their existing ownership percentage in América Móvil. Rights to purchase shares in these circumstances are known as preemptive rights. Our shareholders do not have preemptive rights in certain circumstances such as mergers, convertible debentures, public offers and placement of repurchased shares. We may not be legally permitted to allow holders of ADSs or holders of L Shares or A Shares in the United States to exercise any preemptive rights in any future capital increase unless we file a registration statement with the U.S. Securities and Exchange Commission (the “SEC”) with respect to that future issuance of shares. At the time of any future capital increase, we will evaluate the costs and potential liabilities associated with filing a registration statement with the SEC and any other factors that we consider important to determine whether we will file such a registration statement.

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  RISK FACTORS

We cannot assure you that we will file a registration statement with the SEC to allow holders of ADSs or U.S. holders of L Shares or A Shares to participate in a preemptive rights offering. As a result, the equity interest of such holders in América Móvil may be diluted proportionately. In addition, under current Mexican law, it is not practicable for the depositary to sell preemptive rights and distribute the proceeds from such sales to ADS holders.

RISKS RELATING TO DEVELOPMENTS IN MEXICO AND OTHER COUNTRIES

Economic, political and social conditions in Latin America, the United States, the Caribbean and Europe may adversely affect our business

Our financial performance may be significantly affected by general economic, political and social conditions in the markets where we operate. Many countries in Latin America and the Caribbean, including Mexico, Brazil and Argentina, have undergone significant economic, political and social crises in the past, and these events may occur again in the future. We cannot predict whether changes in political administrations will result in changes in governmental policy and whether such changes will affect our business. Factors related to economic, political and social conditions that could affect our performance include:

• significant governmental influence over local economies;

• substantial fluctuations in economic growth;

• high levels of inflation, including hyperinflation;

• changes in currency values;

• exchange controls or restrictions on expatriation of earnings;

• high domestic interest rates;

• price controls;

• changes in governmental economic, tax, labor or other policies;

• imposition of trade barriers;

• changes in law or regulation; and

• overall political, social and economic instability.

Adverse economic, political and social conditions in Latin America, the United States, the Caribbean or in Europe may inhibit demand for telecommunication services and create uncertainty regarding our operating environment or may affect our ability to renew our licenses and concessions, to maintain or increase our market share or profitability and may have an adverse impact on future acquisitions, which could have a material adverse effect on our company. In addition, the perception of risk in the countries in which we operate may have a negative effect on the trading price of our shares and ADSs and may restrict our access to international financial markets.

In various countries where we operate, for example, elections took place during 2018, which could lead to economic, political and social changes over which we have no control. Our business may also be especially affected by conditions in Mexico and Brazil, two of our largest markets. Mexican elections in July 2018 resulted in a new president and in a new Congress with a majority of members in both houses representing a different political party from the parties that have been in power in the past. We cannot predict what changes in policy the Mexican administration may adopt, or their impact on our operations. Additionally, in Mexico, economic conditions are strongly impacted by those of the United States. There is continuing uncertainty regarding U.S. policies with respect to matters of importance to Mexico and its economy, particularly with respect to trade and migration.

Possible replacement of the LIBOR benchmark interest rate may have an impact on our business

On July 27, 2017, the U.K. Financial Conduct Authority (the authority that regulates LIBOR) announced that it would phase out LIBOR as a benchmark by the end of 2021. It is unclear whether new methods of calculating LIBOR will be established such that it continues to exist after 2021. Potential changes, or uncertainty related to such potential changes may adversely affect the market for loans with LIBOR-indexed interest rates. When LIBOR ceases to exist, we may need to amend the credit and loan agreements with our lenders that utilize LIBOR as a factor in determining the interest rate based on a new standard that is established, if any. There is no guarantee that a transition from LIBOR to an alternative will not result in financial market disruptions,

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significant increases in benchmark rates, or borrowing costs to borrowers, any of which could have an adverse effect on our business, results of operations and financial condition.

Changes in exchange rates could adversely affect our financial condition and results of operations

We are affected by fluctuations in the value of the currencies in which we conduct operations compared to the currencies in which our indebtedness is denominated. Such changes result in exchange losses or gains on our net indebtedness and accounts payable. In 2018, we reported net foreign exchange losses of Ps.7.3 billion.

In addition, currency fluctuations between the Mexican peso and the currencies of our non-Mexican subsidiaries affect our results as reported in Mexican pesos. Currency fluctuations are expected to continue to affect our financial income and expense.

Major depreciation of the currencies in which we conduct operations could cause governments to impose exchange controls that would limit our ability to transfer funds between us and our subsidiaries

Major depreciation of the currencies in which we conduct operations may result in disruption of the international foreign exchange markets and may limit our ability to transfer or to convert such currencies into U.S. dollars and other currencies for the purpose of making timely payments of interest and principal on our indebtedness. For example, although the Mexican government does not currently restrict, and for many years has not restricted, the right or ability of Mexican or foreign persons or entities to

convert Mexican pesos into U.S. dollars or to transfer other currencies out of Mexico, it could institute restrictive exchange rate policies in the future. Similarly, the Brazilian government may impose temporary restrictions on the conversion of Brazilian reais into foreign currencies and on the remittance to foreign investors of proceeds from investments in Brazil whenever there is a serious imbalance in Brazil’s balance of payments or a reason to foresee a serious imbalance. In the past, the government of Argentina has adopted restrictions on access to the foreign exchange market and the transfer of foreign currency outside Argentina. The Argentine government could impose further exchange controls or restrictions on the movement of capital and take other measures in the future in response to capital flight or a significant depreciation of the Argentine peso.

Developments in other countries may affect the market price of our securities and adversely affect our ability to raise additional financing

The market value of securities of Mexican companies is, to varying degrees, affected by economic and market conditions in other countries, including the United States, the European Union (the “EU”) and emerging market countries. Although economic conditions in such countries may differ significantly from economic conditions in Mexico, investors’ reactions to developments in any of these other countries may have an adverse effect on the market value of securities of Mexican issuers. Crises in the United States, the EU and emerging market countries may diminish investor interest in securities of Mexican issuers. This could materially and adversely affect the market price of our securities, and could also make it more difficult for us to access the capital markets and finance our operations in the future on acceptable terms or at all.

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     MAJOR SHAREHOLDERS

The following table sets forth our capital structure as of March 31, 2019.

SERIES	NUMBER OF SHARES (MILLIONS)		PERCENT OF CAPITAL			COMBINED A SHARES AND AA SHARES(1)
L Shares (no par value)		44,883		68.0	%		—
AA Shares (no par value)		20,602		31.2	%		97.5	%
A Shares (no par value)		539		0.8	%		2.5	%
Total(2)		66,024		100.0	%		100.0	%

⁽¹⁾ The AA Shares and A Shares of América Móvil, together, are entitled to elect a majority of our directors. Holders of L Shares are entitled to limited voting rights under our bylaws. See “Bylaws—Voting Rights” under this Part IV.

⁽²⁾ Figures in the table may not recalculate exactly due to rounding.

According to reports of beneficial ownership of our shares filed with the SEC, the Slim Family may be deemed to control us through their interests in a Mexican trust that holds AA Shares and L Shares for their benefit (the “Family Trust”), their interest in Inversora Carso, S.A. de C.V., including its subsidiary Control Empresarial de Capitales, S.A. de C.V. and their direct ownership of our shares. See “Management—Directors” and “Management—Executive Committee” under Part V and “Related Party Transactions” under this Part IV of this annual report.

The following table identifies owners of more than 5.0% of any series of our shares as of March 31, 2019. Except as described in the table below and the accompanying notes, we are not aware of any holder of more than 5.0% of any series of our shares. Figures below do not include L Shares that would be held by each shareholder upon conversion of AA Shares or A Shares, as provided for under our bylaws. See “Bylaws—Shareholders’ Equity” under this Part IV and “Management—Share Ownership of Directors and Senior Management” under Part V of this annual report.

SHAREHOLDER	SHARES OWNED (MILLIONS)		PERCENT OF CLASS(1)
AA SHARES:
Family Trust(2)		10,894		52.9%
Inversora Carso(3)		4,381		21.3%
Carlos Slim Helú		1,879		9.1%
L SHARES:
Inversora Carso(3)		6,020		13.4%
Family Trust(2)		5,998		13.4%
Carlos Slim Helú		3,072		6.8%
BlackRock, Inc.(4)		2,918		6.5%

⁽¹⁾ Percentage figures are based on the number of shares outstanding as of March 31, 2019.

⁽²⁾ The Family Trust is a Mexican trust that holds AA Shares and L Shares for the benefit of members of the Slim Family. In addition to shares held by the Family Trust, members of the Slim Family, including Carlos Slim Helú, directly own an aggregate of 3,558 million AA Shares and 9,570 million L Shares representing 17.3% and 21.3%, respectively, of each series. According to beneficial reports filed with the SEC, none of these members of the Slim Family, other than Carlos Slim Helú, individually directly own more than 5.0% of any class of our shares.

⁽³⁾ Includes shares owned by subsidiaries of Inversora Carso. Based on beneficial ownership reports filed with the SEC, Inversora Carso is a Mexican sociedad anónima de capital variable and may be deemed to be controlled by the Slim Family.

⁽⁴⁾ Based on beneficial ownership reports filed with the SEC.

As of March 31, 2019, 15.9% of the outstanding L Shares were represented by L Share ADSs, each representing the right to receive 20 L Shares, and 99.9% of the L Share ADSs were held by 7,077 registered holders with addresses in the United States. As of such date, 35.9% of the A Shares were held in the form of A Share ADSs, each representing the right to receive 20 A Shares, and 99.8% of the A Share ADSs were held by 3,450 registered holders with addresses in the United States. Each A Share may be exchanged at the option of the holder for one L Share.

We have no information concerning the number of holdings or holders with registered addresses in the United States that hold:

• AA Shares;

• A Shares not represented by ADSs; or

• L Shares not represented by ADSs.

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RELATED PARTY TRANSACTIONS       

Our subsidiaries purchase materials or services from a variety of companies that may be deemed for certain purposes to be under common control with us, including Telesites, Grupo Carso and Grupo Financiero Inbursa and their respective subsidiaries.

These services include insurance and banking services provided by Grupo Financiero Inbursa and its subsidiaries. In addition, we sell products in Mexico through the Sanborns and Sears Operadora México, S.A. de C.V. (“Sears”) store chains. Some of our subsidiaries also purchase network construction services and materials from subsidiaries of Grupo Carso. Our subsidiaries purchase these materials and services on terms no less favorable than they could obtain from unaffiliated parties, and would have access to other sources if our related parties ceased to provide them on competitive terms.

We and Telesites have entered into an agreement providing for site usage fees, annual price escalations and fixed annual charges that permit us to install a pre-determined amount of equipment at the sites and provide for incremental fee payments if capacity use is exceeded. The principal economic terms of the agreement conform to the reference terms published by Telesites and approved by IFT.

Note 6 to our audited consolidated financial statements included in this annual report provides additional information about our related party transactions.

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     DIVIDENDS

We regularly pay cash dividends on our shares. The table below sets forth the nominal amount of dividends paid per share on each date indicated, in Mexican pesos and translated into U.S. dollars at the exchange rate reported by Banco de México, as published in the Official Gazette, for each of the respective payment dates.

Payment Date	Pesos Per Share		Dollar Per Share
November 12, 2018	Ps.      0.16	U.S.$	0.0080
July 16, 2018	Ps.      0.16	U.S.$	0.0085
November 13, 2017	Ps.      0.15	U.S.$	0.0079
July 17, 2017	Ps.      0.15	U.S.$	0.0085
November 14, 2016	Ps.      0.14	U.S.$	0.0068
July 15, 2016	Ps.      0.14	U.S.$	0.0076
November 13, 2015	Ps.      0.13	U.S.$	0.0078
September 25, 2015	Ps.      0.30	U.S.$	0.0177
July 17, 2015	Ps.      0.13	U.S.$	0.0082
November 14, 2014	Ps.      0.12	U.S.$	0.0082
July 18, 2014	Ps.      0.12	U.S.$	0.0082

We have offered our shareholders the option to receive a scrip dividend in the form of either cash, Series L shares or a combination thereof and may continue to do so in the future.

On April 9, 2019, our shareholders approved a cash dividend of Ps.0.35 per share, of which Ps.0.18 per share is payable on July 15, 2019 and Ps.0.17 is payable on November 11, 2019.

The declaration, amount and payment of dividends by América Móvil is determined by majority vote of the holders of AA Shares and A Shares, generally on the recommendation of the Board of Directors, and depends on our results of operations, financial condition, cash requirements, future prospects and other factors considered relevant by the holders of AA Shares and A Shares.

Our bylaws provide that holders of AA Shares, A Shares and L Shares participate equally on a per-share basis in dividend payments and other distributions, subject to certain preferential dividend rights of holders of L Shares. See “Bylaws—Dividend Rights” and “Bylaws—Preferential Rights of L Shares” under this Part IV.

 TRADING MARKETS

Our shares and ADSs are listed on the following markets:

Security	Stock Exchange	Ticker Symbol
L Shares	Mexican Stock Exchange—Mexico City	AMXL
L Share ADSs	New York Stock Exchange—New York	AMX
A Shares	Mexican Stock Exchange—Mexico City	AMXA
A Share ADSs	New York Stock Exchange—New York	AMOV

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BYLAWS       

Below is a brief summary of certain significant provisions in our current bylaws and Mexican law. It does not purport to be complete and is qualified by reference to the bylaws themselves. An English translation of our bylaws has been filed with the SEC as an exhibit and is incorporated by reference to this annual report. For a description of our Board of Directors, Executive and Audit and Corporate Practices Committees and External Auditor, see “Management” under Part V of this annual report.

Organization

We are a sociedad anónima bursátil de capital variable organized under Mexican law.

Shareholders’ Equity

We have three classes of outstanding shares: AA Shares, A Shares and L Shares, all without par value, fully paid and non-assessable.

AA Shares and A Shares have full voting rights

L Shares may vote only in limited circumstances as described under “—Voting Rights” under this Part IV.

The rights of all series of shares are generally identical except for voting rights and the limitations on nonMexican ownership of AA Shares and A Shares. The AA Shares must always represent at least 51.0% of the combined AA Shares and A Shares. At least 20.0% of our outstanding shares must consist of AA Shares, and not more than 80% can be A Shares and L Shares.

Each AA Share or A Share may be exchanged at the option of the holder for one L Share, provided that the AA Shares may never represent less than 20.0% of our outstanding shares or less than 51.0% of our combined AA Shares and A Shares.

Any capital increase must be represented by new shares of each series in proportion to the number of shares of each series outstanding.

Voting Rights

Each AA Share or A Share entitles the holder to one vote at any shareholders meeting.

Each L Share entitles the holder to one vote at any meeting at which L Shares are entitled to vote. L Shares are entitled to vote to elect only two members of the Board and the corresponding alternate directors, as well as on the following limited matters: our transformation from one type of company to another; any merger involving us; the extension of our authorized corporate duration; our voluntary dissolution; any change in our corporate purpose; any transaction that represents 20.0% or more of the Company’s consolidated assets; any change in our jurisdiction of incorporation; removal of our shares from listing on the Mexican Stock Exchange or any foreign exchange; and any action that would prejudice the rights of L Shares. A resolution on any of the specified matters requires the affirmative vote of both a majority of all outstanding shares and a majority of the AA Shares and the A Shares voting together.

Shares of any series are also entitled to vote as a class on any action that would prejudice the rights of that series and are entitled to judicial relief against any action taken without their vote.

Shareholders’ Meetings

General shareholders’ meetings may be ordinary or extraordinary. Extraordinary general meetings are those called to consider certain specified matters, including, principally, changes to the bylaws, liquidation, merger and transformation, as well as to consider the removal of our shares from listing on the Mexican Stock Exchange or any foreign stock exchange. General meetings called to consider all other matters are ordinary meetings.

An ordinary general meeting of AA Shares and A Shares must be held each year to consider the approval of the financial statements for the preceding fiscal year, to elect directors and to determine the allocation of the profits. Transactions that represent 20.0% or more of our consolidated assets in any fiscal year must be approved by an ordinary general shareholder meeting of all shareholders, including L Shares. All other matters on which L Shares are entitled to vote would be considered at an extraordinary general meeting.

The two directors elected by the L Shares are elected at a special meeting of L Shares. A special meeting of the L Shares must be held each year for the election of directors.

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BYLAWS

The quorum for an ordinary general meeting of the AA Shares and A Shares is 50.0% of such shares, and action may be taken by a majority of the shares present. If a quorum is not available, a second meeting may be called at which action may be taken by a majority of the AA Shares and A Shares present, regardless of the number of such shares. Special meetings of L Shares are governed by the same rules applicable to ordinary general meetings of AA Shares and A Shares. The quorum for an extraordinary general meeting at which L Shares may not vote is 75.0% of the AA Shares and A Shares, and the quorum for an extraordinary general meeting at which L Shares are entitled to vote is 75.0% of the outstanding capital stock. If a quorum is not available in either case, a second meeting may be called and action may be taken, provided a majority of the shares entitled to vote is present. Whether on first or second call, actions at an extraordinary general meeting may be taken by a majority vote of the AA Shares and A Shares outstanding and, on matters which L Shares are entitled to vote, a majority vote of all the capital stock.

Holders of 20.0% of our outstanding capital stock may have any shareholder action set aside by filing a complaint with a Mexican court of law within 15 days after the close of the meeting at which such action was taken and showing that the challenged action violates Mexican law or our bylaws. In addition, any holder of our capital stock may bring an action at any time within five years challenging any shareholder action. Relief under these provisions is only available to holders who were entitled to vote on, or whose rights as shareholders were adversely affected by, the challenged shareholder action and whose shares were not represented when the action was taken or, if represented, voted against it.

Shareholders’ meetings may be called by the Board, its chairman, its corporate secretary, the Chairman of the Audit and Corporate Practices Committee or a Mexican court of law. The Chairman of the Board or the Chairman of the Audit and Corporate Practices Committee may be required to call a meeting of shareholders by the holders of 10.0% of the outstanding shares. Notice of meetings must be published at least 15 days prior to the meeting.

A shareholder is required to deposit its shares with a custodian in order to attend a shareholders’ meeting. A holder of ADSs will not be able to meet this requirement, and accordingly is not entitled to attend shareholders’

meetings. A holder of ADSs is entitled to instruct the depositary as to how to vote the shares represented by ADSs, in accordance with procedures provided for in the deposit agreements. However, a holder of ADSs will not be able to vote its shares directly at a shareholders’ meeting or to appoint a proxy to do so.

Dividend Rights

At the annual ordinary general meeting of AA Shares and A Shares, the Board submits our financial statements for the previous fiscal year to the holders of AA Shares and A Shares for approval. Once financial statements are approved, the allocation of our net profits is determined, and we must allocate 5.0% of such net profits to a legal reserve, which is not thereafter available for distribution except as a stock dividend, until the amount of the legal reserve equals 20.0% of our capital stock. The remainder of net profits is available for distribution.

All shares outstanding are entitled to participate in a dividend or other distribution. L shares are entitled to a nominal preference with respect to dividends or liquidation, but the preference has no economic significance.

Preemptive Rights

In new issuances of shares, each shareholder has a preferential right to subscribe for a sufficient number of shares of the same series to maintain its existing proportionate holdings, except in certain circumstances such as mergers, convertible debentures, public offers and placement of treasury or repurchased shares. These rights cannot be traded separately from the shares. As a result, there is no trading market for such rights. Holders of ADSs may exercise these rights only through the depositary. We are not required to take steps that may be necessary to make this possible.

Limitations on Share Ownership

AA Shares and A Shares may be owned only by holders that qualify as Mexican investors as defined in the Foreign Investment Law (Ley de Inversión Extranjera) and our bylaws. AA Shares can only be held or acquired by Mexican citizens, Mexican corporations whose capital stock is held completely by Mexican citizens or other Mexican qualified investors. Non-Mexican investors cannot hold AA Shares except through trusts that effectively neutralize their votes.

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If a foreign government or state acquires our AA Shares, such shares would immediately be rendered without effect or value.

We have a foreign exclusion clause that restricts ownership of our shares to holders that qualify as Mexican investors. It does not apply to the L Shares, and, under transitional provisions adopted by our shareholders, it does not limit foreign ownership of A Shares outstanding as of the date of the shareholders’ meeting approving the amendment.

Restrictions on Certain Transfers

Any transfer of more than 10.0% of our voting shares, in one or more transactions, by any person or group of persons acting in concert, requires prior approval by our Board. If the Board denies such approval, however, it shall designate an alternate transferee, who must pay market price for the shares as quoted on the Mexican Stock Exchange.

Restrictions on Deregistration in Mexico

Our shares are registered with the RNV maintained by the CNBV.

If we wish to cancel our registration, or if it is cancelled by the CNBV, we are required to conduct a public offer to purchase all of the outstanding shares prior to such cancellation. Such offer shall exclude our controlling group of shareholders. If, after the public offer is concluded, there are still outstanding shares held by the general public, we will be required to create a trust for a period of six months, with funds in an amount sufficient to purchase, at the same price as the offer price, the number of outstanding shares held by the public that did not participate in the offer.

Unless the CNBV authorizes otherwise, upon the prior approval of the Board, which must take into account the opinion of the Audit and Corporate Practices Committee, the offer price will be the higher of (i) the average of the closing price during the previous 30 days on which the shares may have been quoted or (ii) the book value of the shares in accordance with the most recent quarterly report submitted to the CNBV and to the Mexican Stock Exchange.

The voluntary cancellation of the registration shall be subject to (i) the prior authorization of the CNBV and (ii) the authorization of not less than 95.0% of the outstanding capital stock in a general extraordinary shareholders’ meeting.

Tender Offer Requirement

Certain significant acquisitions of our capital stock may require the purchaser to make a tender offer.

Other Provisions

EXCLUSIVE JURISDICTION. Our bylaws provide that legal actions relating to the execution, interpretation or performance of the bylaws shall be brought only in Mexican courts.

PURCHASE OF OUR OWN SHARES. We may repurchase our shares on the Mexican Stock Exchange at any time at the then-prevailing market price. Any such repurchase must conform to guidelines established by the Board, and the amount available to repurchase shares must be approved by the general ordinary shareholders’ meeting. The economic and voting rights corresponding to repurchased shares may not be exercised during the period in which we own such shares, and such shares are not deemed to be outstanding for purposes of calculating any quorum or vote at any shareholders’ meeting during such period.

CONFLICT OF INTEREST. A shareholder that votes on a business transaction in which its interest conflicts with our interests may be liable for damages, but only if the transaction would not have been approved without its vote.

WITHDRAWAL RIGHTS. Whenever a shareholders meeting approve a change of corporate purposes, change of nationality of the corporation or transformation from one type of company to another, any shareholder entitled to vote on such change that has voted against may withdraw and receive the book value of its shares, provided this right is exercised within 15 days following the meeting.

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BYLAWS

American Depositary Shares

Citibank, N.A. (“the Depositary”) serves as the depositary for our ADSs and our American Depository Receipts (“ADR”) program. ADS holders are required to pay various fees to the Depositary, and the Depositary may refuse to provide any service for which a fee is assessed until the applicable fee has been paid.

ADS holders are required to pay the Depositary amounts in respect of expenses incurred by the Depositary or its agents on behalf of ADS holders, including expenses arising from (i) taxes or other governmental charges, (ii) registration fees payable to us that may be applicable to the transfer of shares upon deposits to or withdrawals from the ADS program, (iii) cable, telex and facsimile transmission, (iv) conversion of foreign currency into U.S. dollars, (v) compliance with exchange control regulations and other regulatory requirements or (vi) servicing of the ADSs or the shares underlying ADSs. The Depositary may decide in its sole discretion to seek payment either by billing holders or by deducting the fee from one or more cash dividends or other cash distributions.

ADS holders are also required to pay additional fees for certain services provided by the Depositary, as set forth in the table below.

DEPOSITARY SERVICE	FEE PAYABLE BY ADS HOLDERS
Issuance and delivery of ADSs, including in connection with share distributions, purchase rights, sales and stock splits	Up to U.S.$5.00 per 100 ADSs (or a fraction thereof)
Cash distributions	Up to U.S.$5.00 per 100 ADSs (or a fraction thereof)
Surrender, withdrawal or cancellation	Up to U.S.$5.00 per 100 ADSs (or a fraction thereof)
Share distributions other than ADSs or rights to purchase additional ADSs (i.e., spin-off shares)	Up to U.S.$5.00 per 100 ADSs (or a fraction thereof)
ADS services	Up to U.S.$5.00 per 100 ADSs (or a fraction thereof) held on the applicable record date(s) established by the Depositary

Payments by the Depositary

The Depositary reimburses us for certain expenses we incur in connection with the ADR program, subject to a ceiling agreed between us and the Depositary from time to time. These reimbursable expenses currently include legal and accounting fees, listing fees, investor relations expenses and fees payable to service providers for the distribution of material to ADS holders. During the year ended December 31, 2018, the Depositary reimbursed us a total of U.S.$2.1 million for reimbursable expenses.

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PURCHASES OF EQUITY SECURITIES BY THE ISSUER        

AND AFFILIATED PURCHASERS       

We periodically repurchase our L Shares and A Shares on the open market using funds authorized by our shareholders specifically for the repurchase of L Shares and A Shares by us at our discretion. In the annual ordinary shareholders’ meeting held on April 9, 2019, our shareholders authorized an allocation of Ps.3.0 billion to repurchase L Shares and A Shares from April 2019 to April 2020.

The following tables set out information concerning purchases of our L Shares and A Shares by us and our affiliated purchasers in 2018. We did not repurchase our L Shares or A Shares other than through the share repurchase program.

PERIOD	TOTAL NUMBER OF L SHARES PURCHASED(1)		AVERAGE PRICE PER L SHARES		TOTAL NUMBER OF L SHARES PURCHASED AS PART OF PUBLICLY ANNOUNCED PLANS OR PROGRAMS		APPROXIMATE MEXICAN PESO VALUE OF L SHARES THAT MAY YET BE PURCHASED UNDER THE PLANS OR PROGRAMS(2)
January 2018		4,300,000		Ps.      16.82		4,300,000	Ps.	2,186,861,427
February 2018		1,318,000		17.26		1,318,000		2,162,900,627
March 2018		—		—		—		2,162,900,627
April 2018		—		—		—		2,162,900,627
May 2018		2,560,156		16.14		2,560,156		2,958,688,268
June 2018		2,080,000		15.49		2,080,000		2,926,474,720
July 2018		3,210,000		16.15		3,210,000		2,874,640,889
August 2018		2,680,000		15.86		2,680,000		2,832,132,042
September 2018		2,081,508		15.45		2,081,508		2,799,978,412
October 2018		7,880,400		14.46		7,880,400		2,686,010,961
November 2018		4,988,725		13.09		4,988,725		2,620,438,367
December 2018		2,918,607		13.94		2,918,607		2,579,763,369
Total		34,017,396				34,017,396
(1) This includes purchases by us and our affiliated purchasers in 2018. (2) This is the approximate peso amount available at the end of the period for purchases of both L Shares and A Shares pursuant to our share repurchase program.

PERIOD	TOTAL NUMBER OF A SHARES PURCHASED(1)		AVERAGE PRICE PER A SHARES		TOTAL NUMBER OF A SHARES PURCHASED AS PART OF PUBLICLY ANNOUNCED PLANS OR PROGRAMS		APPROXIMATE MEXICAN PESO VALUE OF A SHARES THAT MAY YET BE PURCHASED UNDER THE PLANS OR PROGRAMS(2)
January 2018		130,382		Ps.      17.07		130,382	Ps.	2,186,861,427
February 2018		74,987		16.22		74,987		2,162,900,627
March 2018		—		—		—		2,162,900,627
April 2018		—		—		—		2,162,900,627
May 2018		—		—		—		2,958,688,268
June 2018		—		—		—		2,926,474,720
July 2018		—		—		—		2,874,640,889
August 2018		—		—		—		2,832,132,042
September 2018		—		—		—		2,799,978,412
October 2018		—		—		—		2,686,010,961
November 2018		20,248		13.65		20,248		2,620,438,367
December 2018		—		—		—		2,579,763,369
Total	225,617				225,617
(1) This includes purchases by us and our affiliated purchasers in 2018. (2) This is the approximate peso amount available at the end of the period for purchases of both L Shares and A Shares pursuant to our share repurchase program.

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       TAXATION OF SHARES AND ADSS

The following summary contains a description of certain Mexican federal and U.S. federal income tax consequences of the acquisition, ownership and disposition of L Shares, A Shares, L Share ADSs or A Share ADSs, but it does not purport to be a comprehensive description of all of the tax considerations that may be relevant to a decision to purchase, hold or sell shares or ADSs.

This discussion does not constitute, and should not be considered as, legal or tax advice to holders. The discussion is for general information purposes only and is based upon the federal tax laws of Mexico (including the Mexican Income Tax Law (Ley del Impuesto sobre la Renta) and the United States in effect on the date of this annual report, including the Convention for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion and the protocols thereto between the United States and Mexico currently in force (together, the “Tax Treaty”) and the agreement between the United States and Mexico concerning the exchange of information with respect to tax matters. The Tax Treaty is subject to change, and such changes may have retroactive effects. Holders of shares or ADSs should consult their own tax advisors as to the Mexican, U.S. or other tax consequences of the purchase, ownership and disposition of shares or ADSs, including, in particular, the effect of any foreign, state or local tax laws.

MEXICAN TAX CONSIDERATIONS

The following is a general summary of the principal consequences under the Mexican Income Tax Law and the rules and regulations thereunder, as currently in effect, of an investment in shares or ADSs by a holder that is not a resident of Mexico and that will not hold shares or ADSs or a beneficial interest therein in connection with the conduct of a trade or business through a permanent establishment in Mexico (a “nonresident holder”).

For purposes of Mexican taxation, the definition of residence is highly technical and residence arises in several situations. Generally, an individual is a resident of Mexico if he or she has established his or her home or center of vital interests in Mexico, and a corporation is considered a resident if it has its place of effective management in Mexico. However, any determination of residence should take into account the particular situation of each person or legal entity.

If a legal entity or an individual is deemed to have a permanent establishment in Mexico for Mexican tax purposes, all income attributable to that permanent establishment will be subject to Mexican income taxes, in accordance with applicable tax laws.

This summary does not purport to be a comprehensive description of all the Mexican tax considerations that may be relevant to a decision to purchase, own or dispose of the shares. In particular, this summary (i) does not describe any tax consequences arising under the laws of any state, locality, municipality or taxing jurisdiction other than certain federal laws of Mexico and (ii) does not address all of the Mexican tax consequences that may be applicable to specific holders of the shares, including a holder:

• whose shares were not acquired through the Mexican Stock Exchange or other markets authorized by the Ministry of Finance and Public Credit (Secretaría de Hacienda y Crédito Público) or the Mexican Federal Tax Code;

• of shares or ADSs that control us;

• that holds 10.0% or more of our shares;

• that is part of a group of persons for purposes of Mexican law that controls us (or holds 10.0% or more of our shares); or

• that is a resident of Mexico or is a corporation resident in a tax haven (as defined by the Mexican Income Tax Law).

Tax Treaties

Provisions of the Tax Treaty that may affect the taxation of certain U.S. holders (as defined below) are summarized below.

The Mexican Income Tax Law has established procedural requirements for a nonresident holder to be entitled to benefits under any of the tax treaties to which Mexico is a party, including on dispositions and dividends. These procedural requirements include, among others, the obligation to (i) prove tax treaty residence, (ii) file tax calculations made by an authorized certified public accountant or an informational tax statement, as the case may be, and (iii) appoint representatives in Mexico for taxation purposes. Parties related to the issuer may be subject to additional procedural requirements.

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Payment of Dividends

Dividends, either in cash or in kind, paid with respect to L Shares, A Shares, L Share ADSs or A Share ADSs will generally be subject to a 10.0% Mexican withholding tax (provided that no Mexican withholding tax will apply to distributions of net taxable profits generated before 2014).

Taxation of Dispositions

The tax rate on income realized by a nonresident holder from a disposition of shares through the Mexican Stock Exchange is generally 10.0%, which is applied to the net gain realized on the disposition. This tax is payable through withholding made by intermediaries. However, such withholding does not apply to a nonresident holder who certifies that the holder is resident in a country with which Mexico has entered into an income tax treaty.

The sale or other transfer or disposition of shares not carried out through the Mexican Stock Exchange and not held in the form of ADSs will be subject to a 25% tax rate in Mexico, which is applicable to the gross proceeds realized from the sale. Alternatively, a nonresident holder may, subject to certain requirements, elect to pay taxes on the net gain realized from the sale of shares at a rate of 35%.

The sale or disposition of ADSs through securities exchanges or markets recognized under the Mexican federal tax code (which includes the NYSE) by nonresidents who are residents of a country with which Mexico has entered into an income tax treaty is not subject to income tax in Mexico under the current tax rules. The tax treatment of such transfer of ADSs by nonresidents who are also not residents of a country with which Mexico has entered into an income tax treaty is not clear under the current Mexican tax rules.

Pursuant to the Tax Treaty, gains realized by a U.S. resident that is eligible to receive benefits pursuant to the Tax Treaty from the sale or other disposition of shares or ADSs, even if the sale or disposition is not carried out under the circumstances described in the preceding paragraphs, will not be subject to Mexican income tax, provided that the gains are not attributable to a permanent establishment or a fixed base in Mexico, and further provided that such U.S. holder owned less than 25% of the shares representing our capital stock (including ADSs), directly or indirectly, during

the 12-month period preceding such disposition. U.S. residents should consult their own tax advisors as to their possible eligibility under the Tax Treaty.

Gains and gross proceeds realized by other nonresident holders that are eligible to receive benefits pursuant to other income tax treaties to which Mexico is a party may be exempt from Mexican income tax, in whole or in part. Non-U.S. holders should consult their own tax advisors as to their possible eligibility under such treaties.

Other Mexican Taxes

A nonresident holder generally will not be liable for estate, inheritance or similar taxes with respect to its holdings of shares or ADSs; provided, however, that gratuitous transfers of shares or ADSs may, in certain circumstances, result in the imposition of a Mexican tax upon the recipient. There are no Mexican stamp, issue registration or similar taxes payable by a nonresident holder with respect to shares or ADSs.

U.S. FEDERAL INCOME TAX CONSIDERATIONS

The following is a summary of certain U.S. federal income tax consequences to U.S. holders (as defined below) of the acquisition, ownership and disposition of shares or ADSs. The summary does not purport to be a comprehensive description of all of the tax consequences of the acquisition, ownership or disposition of shares or ADSs. The summary applies only to U.S. holders that will hold their shares or ADSs as capital assets and does not apply to special classes of U.S. holders, such as dealers in securities or currencies, holders with a functional currency other than the U.S. dollar, holders of 10.0% or more of our shares measured by vote or value (whether held directly or through ADSs or both), tax-exempt organizations, banks, insurance companies or other financial institutions, holders liable for the alternative minimum tax, securities traders electing to account for their investment in their shares or ADSs on a mark-to-market basis, entities that are treated for U.S. federal income tax purposes as partnerships or other pass-through entities or equity holders therein and persons holding their shares or ADSs in a hedging transaction or as part of a straddle or conversion transaction.

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       TAXATION OF SHARES AND ADSS

For purposes of this discussion, a “U.S. holder” is a holder of shares or ADSs that is:

• a citizen or resident of the United States of America,

• a corporation (or other entity taxable as a corporation) organized under the laws of the United States of America or any state thereof or

• otherwise subject to U.S. federal income taxation on a net income basis with respect to the shares or ADSs.

Each U.S. holder should consult such holder’s own tax advisor concerning the overall tax consequences to it of the ownership or disposition of shares or ADSs that may arise under foreign, state and local laws.

Treatment of ADSs

In general, a U.S. holder of ADSs will be treated as the owner of the shares represented by those ADSs for U.S. federal income tax purposes. Deposits or withdrawals of shares by U.S. holders in exchange for ADSs will not result in the realization of gain or loss for U.S. federal income tax purposes. U.S. holders that withdraw any shares should consult their own tax advisors regarding the treatment of any foreign currency gain or loss on any pesos received in respect of such shares.

Taxation of Distributions

In general, a U.S. holder will treat the gross amount of distributions we pay, without reduction for Mexican withholding tax, as dividend income for U.S. federal income tax purposes to the extent of our current and accumulated earnings and profits. Because we do not expect to maintain calculations of our earnings and profits under U.S. federal income tax principles, it is expected that distributions paid to U.S. holders generally will be reported as dividends. In general, the gross amount of any dividends will be includible in the gross income of a U.S. holder as ordinary income on the day on which the dividends are received by the U.S. holder, in the case of shares, or by the depositary, in the case of ADSs.

Dividends will be paid in pesos and will be includible in the income of a U.S. holder in a U.S. dollar amount calculated by reference to the exchange rate in effect on the date that they are received by the U.S. holder, in the case of shares, or

by the depositary, in the case of ADSs (regardless of whether such pesos are in fact converted into U.S. dollars on such date). If such dividends are converted into U.S. dollars on the date of such receipt, a U.S. holder generally should not be required to recognize foreign currency gain or loss in respect of the dividends. U.S. holders should consult their own tax advisors regarding the treatment of foreign currency gain or loss, if any, on any pesos received by a U.S. holder or depositary that are converted into U.S. dollars on a date subsequent to receipt. Dividends paid by us will not be eligible for the dividends-received deduction allowed to corporations under the U.S. Internal Revenue Code of 1986, as amended (the “Code”).

The amount of Mexican tax withheld generally will give rise to a foreign tax credit or deduction for U.S. federal income tax purposes. Dividends generally will constitute “passive category income” for purposes of the foreign tax credit (or, in the case of certain U.S. holders, “general category income”). The foreign tax credit rules are complex. U.S. holders should consult their own tax advisors with respect to the implications of those rules for their investments in our shares or ADSs.

Subject to certain exceptions for short-term and hedged positions, the U.S. dollar amount of dividends received by an individual with respect to the shares or ADSs will be subject to taxation at reduced rates if the dividends are “qualified dividends.” Dividends paid on the shares or ADSs will be treated as qualified dividends if (i) (A) the shares or ADSs are readily tradable on an established securities market in the United States or (B) we are eligible for the benefits of a comprehensive tax treaty with the United States which the U.S. Treasury determines is satisfactory for purposes of this provision and which includes an exchange of information program, and (ii) we were not, in the year prior to the year in which the dividend was paid, and are not, in the year in which the dividend is paid, a passive foreign investment company (“PFIC”). The ADSs are listed on the NYSE, and will qualify as readily tradable on an established securities market in the United States so long as they are so listed. In addition, the U.S. Treasury has determined that the Tax Treaty meets the requirements for reduced rates of taxation, and we believe we are eligible for the benefits of the Tax Treaty. Based on our audited consolidated financial statements, we believe that we were not treated as a PFIC for U.S. federal income tax purposes with respect to the

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2017 and 2018 taxable year. In addition, based on our audited consolidated financial statements and our current expectations regarding the value and nature of our assets, the sources and nature of our income, we do not anticipate becoming a PFIC for the 2019 taxable year. Holders of shares or ADSs should consult their own tax advisors regarding the availability of the reduced dividend tax rate in the light of their own particular circumstances.

Distributions of additional shares or ADSs to U.S. holders with respect to their shares or ADSs that are made as part of a pro rata distribution to all of our shareholders generally will not be subject to U.S. federal income tax.

Taxation of Dispositions

A U.S. holder generally will recognize capital gain or loss on the sale or other disposition of the shares or ADSs in an amount equal to the difference between the U.S. holder’s basis in such shares or ADSs (in U.S. dollars) and the amount realized on the disposition (in U.S. dollars, determined at the spot rate on the date of disposition if the amount realized is denominated in a foreign currency). Gain or loss recognized by a U.S. holder on such sale or other disposition generally will be long-term capital gain or loss if, at the time of disposition, the shares or ADSs have been held for more than one year. Long-term capital gain recognized by a U.S. holder that is an individual is taxable at reduced rates. The deductibility of a capital loss is subject to limitations.

Gain, if any, realized by a U.S. holder on the sale or other disposition of the shares or ADSs generally will be treated as U.S. source income for U.S. foreign tax credit purposes. Consequently, if a Mexican withholding tax is imposed on the sale or disposition of the shares, a U.S. holder that does not receive significant foreign source income from other sources may not be able to derive effective U.S. foreign tax credit benefits in respect of such Mexican taxes. U.S. holders should consult their own tax advisors regarding the application of the foreign tax credit rules to their investment in, and disposition of, the shares or ADSs.

Information Reporting and Backup Withholding

Dividends on, and proceeds from the sale or other disposition of, the shares or ADSs paid to a U.S. holder generally may be subject to the information reporting requirements of the Code and may be subject to backup withholding unless the holder:

• establishes that it is an exempt recipient, if required, or

• provides an accurate taxpayer identification number on a properly completed Internal Revenue Service Form W-9 and certifies that no loss of exemption from backup withholding has occurred.

The amount of any backup withholding from a payment to a holder will be allowed as a credit against the U.S. holder’s U.S. federal income tax liability and may entitle such holder to a refund, provided that certain required information is timely furnished to the Internal Revenue Service.

U.S. Tax Consequences for Non-U.S. holders

DISTRIBUTIONS. A holder of shares or ADSs that is, with respect to the United States, a foreign corporation or a nonresident alien individual (a “non-U.S. holder”) will generally not be subject to U.S. federal income or withholding tax on dividends received on shares or ADSs, unless such income is effectively connected with the conduct by the holder of a U.S. trade or business.

DISPOSITIONS. A non-U.S. holder of shares or ADSs will not be subject to U.S. federal income or withholding tax on gain realized on the sale of shares or ADSs, unless:

• such gain is effectively connected with the conduct by the holder of a U.S. trade or business or

• in the case of gain realized by an individual holder, the holder is present in the United States for 183 days or more in the taxable year of the sale and certain other conditions are met.

INFORMATION REPORTING AND BACKUP WITHHOLDING. Although non-U.S. holders generally are exempt from backup withholding, a non-U.S. holder may be required to comply with certification and identification procedures in order to establish its exemption from information reporting and backup withholding.

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       MANAGEMENT

DIRECTORS

Our Board of Directors has broad authority to manage our company. Our bylaws provide for the Board of Directors to consist of between five and 21 directors and allow for the election of an equal number of alternate directors. Directors need not be shareholders. A majority of our directors and a majority of the alternate directors must be Mexican citizens and elected by Mexican shareholders.

A majority of the holders of the AA Shares and A Shares voting together elect a majority of the directors and alternate directors, provided that any holder or group of holders of at least 10.0% of the total AA Shares and A Shares is entitled to name one director and one alternate director. Two directors and two alternate directors, if any, are elected by a majority vote of the holders of L Shares. Each alternate director may attend meetings of the Board of Directors and vote in the absence of the corresponding director. Directors and alternate directors are elected or reelected at each annual general meeting of shareholders and each annual ordinary special meeting of holders of L Shares, and each serves until a successor is elected and takes office. In accordance with the Mexican Securities Market Law (Ley del Mercado de Valores), the determination as to the independence of our directors is made by our shareholders, though the CNBV may challenge this determination. Pursuant to our bylaws and the Mexican Securities Market Law, at least 25.0% of our directors must be independent. In order to have a quorum for a meeting of

the Board of Directors, a majority of those present must be Mexican nationals.

At the annual general shareholders’ meeting held on April 9, 2019, the current members of the Board of Directors, as well as all current members of the Executive Committee and the Audit and Corporate Practices Committee, were reelected, and the Corporate Secretary and the Corporate Pro Secretary were reappointed, with 14 directors elected by the AA Shares and A Shares voting together and two directors elected by the L Shares.

Our bylaws provide that the members of the Board of Directors are elected for a term of one year. Pursuant to Mexican law, members of the Board continue in their positions after the expiration of their terms for up to an additional 30-day period if new members are not elected. Furthermore, in certain circumstances provided under the Mexican Securities Market Law, the Board of Directors may elect temporary directors who then may be elected or replaced at the shareholders’ meetings.

The names and positions of the members of the Board reelected or elected for the first time at the annual general shareholders’ meeting held on April 9, 2019, their year of birth, and information concerning their committee membership and principal business activities outside América Móvil are set forth below:

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Directors elected by holders of Series AA and Series A Shares:

CARLOS SLIM DOMIT Chairman of the Board and the Executive Committee	Born:	1967
	First elected:	2011
	Term expires:	2020
	Principal occupation:	Chairman of the Board of Telmex
	Other directorships:	Chairman of the Board of Grupo Carso, Grupo Sanborns, S.A.B. de C.V. (“Grupo Sanborns”) and U.S. Commercial Corp, S.A. de C.V.
	Business experience:	Chief Executive Officer of Sanborn Hermanos, S.A. de C.V. (“Sanborn Hermanos”)
PATRICK SLIM DOMIT Vice Chairman and Member of the Executive Committee	Born:	1969
	First elected:	2004
	Term expires:	2020
	Principal occupation:	Vice Chairman of our Board of Directors
	Other directorships:	Director of Grupo Carso, Impulsora del Desarrollo y el Empleo en América Latina, S.A.B. de C.V. (“IDEAL”) and Telmex
	Business experience:	Chief Executive Officer of Grupo Carso and Vice President of Commercial Markets of Telmex
DANIEL HAJJ ABOUMRAD Director and Member of the Executive Committee	Born:	1966
	First elected:	2000
	Term expires:	2020
	Principal occupation:	Chief Executive Officer of América Móvil
	Other directorships:	Director of Grupo Carso and Telmex
	Business experience:	Chief Executive Officer of Compañía Hulera Euzkadi, S.A. de C.V.
CARLOS SLIM HELÚ Director	Born:	1940
	First elected:	2015
	Term expires:	2020
	Principal occupation and Business experience:	Chairman of the Board of Minera Frisco, S.A.B. de C.V. and Carso Infraestructura y Construcción, S.A. de C.V.; Director of IDEAL, Grupo Sanborns and Inmuebles Carso, S.A. de C.V. (“Inmuebles Carso”)

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       MANAGEMENT

LUIS ALEJANDRO SOBERÓN KURI Director	Born:	1960
	First elected:	2000
	Term expires:	2020
	Principal occupation:	Chief Executive Officer and Chairman of the Board of Serinem México, S.A. de C.V. (a subsidiary of Corporación Interamericana de Entretenimiento, S.A.B. de C.V. (“CIE”))
	Other directorships:	Director of CIE; Director of Banco Nacional de México, S.A.
	Business experience:	Various positions at CIE
CARLOS BREMER GUTIÉRREZ Director and Member of the Audit and Corporate Practices Committee	Born:	1960
	First elected:	2004
	Term expires:	2020
	Principal occupation:	Chief Executive Officer of Value Grupo Financiero, S.A.B. de C.V. and Value S.A. de C.V., Casa de Bolsa
	Other directorships:	Chairman of Value Grupo Financiero, S.A.B. de C.V. and Director of Grupo GICSA, S.A.B. de C.V.
	Business experience:	Various positions at Value Grupo Financiero, S.A.B. de C.V.
FRANCISCO MEDINA CHÁVEZ Director	Born:	1956
	First elected:	2018
	Term expires:	2020
	Principal occupation:	Chief Executive Officer and Chairman of Grupo Fame, S.A. de C.V., and Chairman of Grupo Altozano
	Other directorships:	Director of Banamex Citigroup México and Telmex
	Business experience:	Director of Aeromexico and Mitsui Mexico

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ERNESTO VEGA VELASCO Director, Chairman of the Audit and Corporate Practices Committee	Born:	1937
	First elected:	2007
	Term expires:	2020
	Principal occupation:	Retired. Member of the board of directors and audit and corporate practices, planning and finance and evaluation and compensation committees of certain companies.
	Other directorships:	Director of Kuo, S.A.B. de C.V., Dine, S.A.B. de C.V., Inmuebles Carso, IDEAL; and Industrias Peñoles, S.A.B. de C.V.
	Business experience:	Various positions in Desc Group, including Corporate Vice-President
RAFAEL MOISÉS KALACH MIZRAHI Director and Member of the Audit and Corporate Practices Committee	Born:	1946
	First elected:	2012
	Term expires:	2020
	Principal occupation:	Chairman and Chief Executive Officer of Grupo Kaltex, S.A. de C.V. (“Grupo Kaltex”)
	Other directorships:	Director of Telmex and Grupo Carso
	Business experience:	Various positions in Grupo Kaltex
ANTONIO COSÍO PANDO Director	Born:	1968
	First elected:	2015
	Term expires:	2020
	Principal occupation:	Vice President of Grupo Hotelero las Brisas, S.A. de C.V. (“Grupo Brisas”), Compañía Industrial Tepeji del Río, S.A. de C.V., and Bodegas de Santo Tomás, S.A. de C.V.
	Other directorships:	Director of Grupo Financiero Inbursa, Inmuebles Carso, Grupo Carso, Grupo Sanborns, Corporación Actinver S.A.B. de C.V., Grupo Aeromexico S.A.B. de C.V., and Telmex
	Business experience:	Various positions in Grupo Brisas and Compañía Industrial Tepeji del Río, S.A. de C.V.

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       MANAGEMENT

ARTURO ELÍAS AYUB Director	Born:	1966
	First elected:	2011
	Term expires:	2020
	Principal occupation:	Head of Strategic Alliances, Communications and Institutional Relations of Telmex; Chief Executive Officer of Fundación Telmex
	Other directorships:	Chairman of the Board of Publicidad y Contenido Editori- al, S.A. de C.V.; Director of Grupo Sanborns, Grupo Carso, Sears and TM&MS LLC
	Business experience:	Chief Executive Officer of Sociedad Comercial Cadena, President of Pastelería Francesa (El Globo) and President of Club Universidad Nacional, A.C.
OSCAR VON HAUSKE SOLÍS Director	Born:	1957
	First elected:	2011
	Term expires:	2020
	Principal occupation:	Chief Fixed-line Operations Officer of América Móvil
	Other directorships:	Member of Telekom Austria’s Supervisory Board
	Business experience:	Chief Executive Officer of Telmex Internacional, Chief Systems and Telecommunications Operators Officer of Telmex and member of KPN’s supervisory board
LOUIS C. CAMILLERI Director	Born:	1955
	First elected:	2011
	Term expires:	2020
	Principal occupation:	Chairman of Philip Morris International
	Other directorships:	Director of Ferrari N.V.
	Business experience:	Chairman and Chief Executive Officer of Altria and various positions in Philip Morris International
VANESSA HAJJ SLIM Director	Born:	1997
	First elected:	2018
	Term expires:	2020

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Directors elected by holders of Series L Shares:

PABLO ROBERTO GONZÁLEZ GUAJARDO Director and Member of the Audit and Corporate Practices Committee	Born:	1967
	First elected:	2007
	Term expires:	2020
	Principal occupation:	Chief Executive Officer of Kimberly Clark de México
	Other directorships:	Director of Kimberly Clark de México, S.A.B de C.V. (“Kimberly Clark de México”), Grupo Sanborns, and Grupo Lala, S.A.B. de C.V.
	Business experience:	Various positions in the Kimberly Clark Corporation and Kimberly Clark de México, as well as Director of Acciones y Valores Banamex S.A. de C.V. Casa de Bolsa
DAVID IBARRA MUÑOZ Director	Born:	1930
	First elected:	2000
	Term expires:	2020
	Principal occupation:	Retired
	Other directorships:	Director of Grupo Financiero Inbursa, IDEAL and Grupo Carso
	Business experience:	Chief Executive Officer of Nacional Financiera, S.N.C., served in the Mexican Ministry of Finance and Public Credit

The annual ordinary general shareholders’ meeting held on April 9, 2019, determined that the following directors are independent: Messrs. Ernesto Vega Velasco, Carlos Bremer Gutiérrez, Pablo Roberto González Guajardo, David Ibarra Muñoz, Antonio Cosío Pando, Louis C. Camilleri, Rafael Moisés Kalach Mizrahi, Luis Alejandro Soberón Kuri and Francisco Medina Chávez.

Alejandro Cantú Jiménez, our General Counsel, serves as Corporate Secretary and Rafael Robles Miaja as Corporate Pro-Secretary.

Daniel Hajj Aboumrad and Arturo Elías Ayub are sons-in-law of Carlos Slim Helú and brothers-in-law of Patrick Slim Domit and Carlos Slim Domit. Patrick Slim Domit and Carlos Slim Domit are sons of Carlos Slim Helú. Vanessa Hajj Slim is the daughter of Daniel Hajj Aboumrad and the granddaughter of Carlos Slim Helú.

EXECUTIVE COMMITTEE

Our bylaws provide that the Executive Committee may generally exercise the powers of the Board of Directors, with certain exceptions. In addition, the Board of Directors is required to consult the Executive Committee before deciding on certain matters set forth in the bylaws, and the Executive Committee must provide its views within 10 calendar days following a request from the Board of Directors, the Chief Executive Officer or the Chairman of the Board of Directors. If the Executive Committee is unable to make a recommendation within ten calendar days, or if a majority of the Board of Directors or any other corporate body duly acting within its mandate determines in good faith that action cannot be deferred until the Executive Committee makes a recommendation, the Board of Directors is authorized to act without such recommendation. The Executive Committee may not delegate its powers to special delegates or attorneys-in-fact.

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       MANAGEMENT

The Executive Committee is elected from among the directors and alternate directors by a majority vote of the holders of common shares (AA Shares and A Shares). The majority of its members must be Mexican citizens and elected by Mexican shareholders. The current members of the Executive Committee are Messrs. Carlos Slim Domit, Patrick Slim Domit and Daniel Hajj Aboumrad. See “Major Shareholders” under Part IV of this annual report.

AUDIT AND CORPORATE PRACTICES COMMITTEE

Our Audit and Corporate Practices Committee is comprised of independent members of the Board of Directors. The Audit and Corporate Practices Committee consists of Messrs. Ernesto Vega Velasco (Chairman), Rafael Moisés Kalach Mizrahi, Pablo Roberto González Guajardo and Carlos Bremer Gutiérrez. The mandate of the Audit and Corporate Practices Committee is to assist our Board of Directors in overseeing our operations, establish and monitor procedures and controls in order to ensure that the financial information we distribute is useful, appropriate and reliable and accurately reflects our financial position. In particular, the Audit and Corporate Practices Committee is required to, among other things:

• provide opinions to the Board of Directors on certain matters as provided by the Mexican Securities Market Law;

• call shareholders’ meetings and recommend inclusion of matters it deems appropriate on the agenda;

• inform the Board of Directors of our internal controls and their adequacy;

• select our auditors, review and pre-approve the scope and terms of their engagement and determine their compensation;

• monitor the performance of our auditors and re-evaluate the terms of their engagement;

• recommend procedures for preparing financial statements and internal controls;

• monitor internal controls and accounting for specified types of matters;

• propose procedures for the preparation of financial statements for internal use that are consistent with the published financial statements;

• assist the Board of Directors in preparing reports as provided by the Mexican Securities Market Law;

• discuss with our auditors the annual financial statements and the accounting principles being applied in the annual and the interim financial statements and, based on such discussions, recommend their approval to the Board of Directors;

• resolve disagreements between our management and auditors relating to our financial statements;

• request the opinion of independent experts when deemed appropriate or when required by law;

• approve services to be provided by our auditors or establish policies and procedures for the pre-approval of services by our auditors;

• obtain from our auditors a report that includes a discussion of critical accounting policies used by us, any alternative accounting treatments for material items that have been discussed by management with our auditors and any other written communications between our auditors and management;

• report to the Board of Directors on its activities;

• develop procedures for the receipt, retention and treatment of complaints regarding accounting, internal controls or auditing matters, including for the confidential submission of concerns regarding such matters by employees;

• evaluate the performance of the external auditors;

• review and discuss our financial statements and advise the Board of Directors of the committee’s recommendations for approval of such financial statements;

• receive and analyze recommendations and observations to its functions from shareholders, members of the Board of Directors and senior management and receive the authority to act upon such recommendations and observations;

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• recommend to the Board of Directors procedures for the selection and succession of our Chief Executive Officer and our other principal executives;

• propose criteria for evaluating executive performance;

• analyze the proposals of the Chief Executive Officer concerning the structure and amount of compensation for our senior executives and raise them with the Board of Directors;

• review new executive compensation programs and the operations of existing programs;

• establish contracting practices to avoid excessive payments to executives;

• assist the Board of Directors in developing appropriate personnel policies;

• participate with the Board of Directors in developing a plan for employees to invest in our L Shares and review the implementation of such plan; and

• perform any other functions the Board of Directors may delegate to the Audit and Corporate Practices Committee.

Under certain circumstances specified in our bylaws, the Audit and Corporate Practices Committee is required to provide its opinion to the Board of Directors. The Company is required to make public disclosure of any Board action that is inconsistent with the opinion of the Audit and Corporate Practices Committee.

In addition, pursuant to our bylaws, the Audit and Corporate Practices Committee is in charge of our corporate governance functions under the Mexican securities laws and regulations and is required to submit an annual report to the Board of Directors with respect to our corporate and audit practices. The Audit and Corporate Practices Committee must request the opinions of our executive officers for purposes of preparing this annual report. The Board of Directors must seek the opinion of the Audit and Corporate Practices Committee regarding any transaction with a related party that is outside the ordinary course of our business as defined under the Mexican Securities Market Law. Each member of the Audit and Corporate Practices Committee is independent, as determined by our shareholders pursuant to the Mexican Securities Market Law and as defined under Rule 10A-3 under the Exchange.

SENIOR MANAGEMENT

The names, responsibilities and prior business experience of our senior officers are as follows:

DANIEL HAJJ ABOUMRAD Chief Executive Officer	Appointed:	2000
	Business experience:	Director of Telmex; Chief Executive Officer of Compañía Hulera Euzkadi, S.A. de C.V.
CARLOS JOSÉ GARCÍA MORENO ELIZONDO Chief Financial Officer	Appointed:	2001
	Business experience:	General Director of Public Credit at the Ministry of Finance and Public Credit; Managing Director of UBS Warburg; Associate Director of Financing at Petróleos Mexicanos (Pemex); Member of Telekom Austria’s Supervisory Board; Member of KPN Supervisory Board
ALEJANDRO CANTÚ JIMÉNEZ General Counsel	Appointed:	2001
	Business experience:	Member of Telekom Austria’s Supervisory Board; Attorney at Mijares, Angoitia, Cortés y Fuentes, S.C.

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       MANAGEMENT

OSCAR VON HAUSKE SOLÍS Chief Fixed-line Operations Officer	Appointed:	2010
	Business experience:	Chief Executive Officer of Telmex Internacional; Chief Systems and Telecommunications Officer of Telmex; Head of Finance at Grupo Condumex, S.A. de C.V.; Director of Telmex, Telmex Internacional, Empresa Brasileira de Telecomunicações S.A. (“Embratel”), and Net Serviços de Comunicação S.A. (“Net Serviços”); Member of Telekom Austria’s Supervisory Board
ANGEL ALIJA GUERRERO Chief Wireless Operations Officer	Appointed:	2012
	Business experience:	Various positions in América Móvil

AUDIT COMMITTEE FINANCIAL EXPERT

Our Board of Directors has determined that Ernesto Vega Velasco qualifies as an “audit committee financial expert,” and Mr. Vega Velasco is independent under the definition of independence applicable to us under the rules of the NYSE.

COMPENSATION OF DIRECTORS AND SENIOR MANAGEMENT

The aggregate compensation paid to our directors (including compensation paid to members of our Audit and Corporate Practices Committee) and senior management in 2018 was approximately Ps.5.3 million and Ps.70.1 million, respectively. None of our directors is a party to any contract with us or any of our subsidiaries that provides for benefits upon termination of employment. We do not provide pension, retirement or similar benefits to our directors in their capacity as directors. Our executive officers are eligible for retirement and severance benefits required by Mexican law on the same terms as all other employees, and we do not separately set aside, accrue or determine the amount of our costs that is attributable to executive officers.

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SHARE OWNERSHIP OF DIRECTORS AND SENIOR MANAGEMENT

Carlos Slim Domit, Chairman of our Board of Directors, holds 647 million (or 3.1%) of our AA Shares and 1,567 million (or 3.5%) of our L Shares directly. Patrick Slim Domit, Vice Chairman of our Board of Directors, holds 323 million (or 1.6%) of our AA Shares and 859 million (or 1.9%) of our L Shares directly. Carlos Slim Helú, member of our Board of Directors, holds 1,879 million (or 9.1%) of our AA Shares and 3,072 million (or 6.8%) of our L shares directly. In addition, according to beneficial ownership reports filed with the SEC, Patrick Slim Domit and Carlos Slim Domit are beneficiaries of a trust that owns shares of the Company. See “Major Shareholders” under Part IV and “Bylaws—Shareholders’ Equity” under Part IV of this annual report.

Except as described above, according to information provided to us by our directors and members of senior management, none of our directors or executive officers is the beneficial owner of more than 1.0% of any class of our capital stock.

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       CORPORATE GOVERNANCE       

Our corporate governance practices are governed by our bylaws, the Mexican Securities Market Law and the regulations issued by the CNBV. We also comply with the Mexican Code of Best Corporate Practices (Código de Mejores Prácticas Corporativas). On an annual basis, we file a report with the Mexican Banking and securities Commission and the Mexican Stock Exchange regarding our compliance with the Mexican Code of Best Corporate Practices.

The table below discloses the significant differences between our corporate governance practices and those required for U.S. companies under the NYSE listing standards.

NYSE STANDARDS	OUR CORPORATE GOVERNANCE PRACTICES
DIRECTOR INDEPENDENCE
Majority of board of directors must be independent. §303A.01. “Controlled companies” are exempt from this requirement. A controlled company is one in which more than 50.0% of the voting power is held by an individual, group or another company, rather than the public. §303A.00. As a controlled company, we would be exempt from this requirement if we were a U.S. issuer.	Pursuant to the Mexican Securities Market Law, our shareholders are required to appoint a board of directors of no more than 21 members, 25% of whom must be independent. Certain persons are per se non-independent, including insiders, control persons, major suppliers and any relatives of such persons. In accordance with the Mexican Securities Market Law, our shareholders’ meeting is required to make a determination as to the independence of our directors, though such determination may be challenged by the CNBV. There is no exemption from the independence requirement for controlled companies. Currently, the majority of our Board of Directors in independent.
EXECUTIVE SESSIONS
Non-management directors must meet at regularly scheduled executive sessions without management. Independent directors should meet alone in an executive session at least once a year. §303A.03.	Our non-management directors have not held executive sessions without management in the past, and they are not required to do so.
NOMINATING/CORPORATE GOVERNANCE COMMITTE
Nominating/corporate governance committee composed entirely of independent directors is required. The committee must have a charter specifying the purpose, duties and evaluation procedures of the committee. §303A.04.	Mexican law requires us to have one or more committees that oversee certain corporate practices, including the appointment of directors and executives. Under the Mexican Securities Market Law, committees overseeing certain corporate practices must be composed of independent directors. However, in the case of controlled companies, such as ours, only a majority of the committee members must be independent.
“Controlled companies” are exempt from these requirements. §303A.00. As a controlled company, we would be exempt from this requirement if we were a U.S. issuer.	Currently, we do not have a nominating committee, and we are not required to have one. Our Audit and Corporate Practices Committee, which is composed of independent directors, oversees our corporate practices, including the compensation and appointment of directors and executives.

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NYSE STANDARDS	OUR CORPORATE GOVERNANCE PRACTICES
COMPENSATION COMMITTEE
Compensation committee composed entirely of independent directors is required, which must evaluate and approve executive officer compensation. The committee must have a charter specifying the purpose, duties and evaluation procedures of the committee. §303A.02(a)(ii) and §303A.05. “Controlled companies” are exempt from this requirement. §303A.00.	We currently do not have a compensation committee, and we are not required to have one. Our Audit and Corporate Practices Committee, which is comprised solely of independent directors, evaluates and approves the compensation of management (including our CEO) and directors.
AUDIT COMMITTEE
Audit committee satisfying the independence and other requirements of Rule 10A-3 under the Exchange Act and the additional requirements under the NYSE standards is required. §§303A.06 and 303A.07.	We have an audit and corporate practices committee of four members. Each member of the Audit and Corporate Practices Committee is independent, as independence is defined under the Mexican Securities Market Law, and also meets the independence requirements of Rule 10A-3 under the U.S. Securities Exchange Act of 1934, as amended. Our Audit and Corporate Practices Committee operates primarily pursuant to (1) a written charter adopted by our Board of Directors, which assigns to the Committee responsibility over those matters required by Rule 10A-3 (2) our bylaws and (3) Mexican law. For a more detailed description of the duties of our audit and corporate practices committee, see “Management” under Part V of this annual report.
EQUITY COMPENSATION PLANS
Equity compensation plans and all material revisions thereto require shareholder approval, subject to limited exemptions. §§303A.08 and 312.03.	Shareholder approval is expressly required under Mexican law for the adoption or amendment of an equity compensation plan. Such plans must provide for similar treatment of executives in comparable positions.
SHAREHOLDER APPROVAL FOR ISSUANCE OF SECURITIES
Issuances of securities (1) that will result in a change of control of the issuer, (2) that are to a related party or someone closely related to a related party, (3) that have voting power equal to at least 20.0% of the outstanding common stock voting power before such issuance or (4) that will increase the number of shares of common stock by at least 20.0% of the number of outstanding shares before such issuance requires shareholder approval. §§312.03(b)-(d).	Mexican law requires us to obtain shareholder approval for any issuance of equity securities. Under certain circumstances, however, we may sell treasury stock subject to the approval of our Board of Directors.
CODE OF BUSINESS CONDUCT AND ETHICS
Corporate governance guidelines and a code of business conduct and ethics are required, with disclosure of any waiver for directors or executive officers. The code must contain compliance standards and procedures that will facilitate the effective operation of the code. §303A.10.	We have adopted a code of ethics, which applies to all of our directors and executive officers and other personnel. For more information, see “Corporate Governance—Code of Ethics” under Part V of this annual report.

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       CORPORATE GOVERNANCE

NYSE STANDARDS	OUR CORPORATE GOVERNANCE PRACTICES
CONFLICTS OF INTEREST
Determination of how to review and oversee related party transactions is left to the listed company. The audit committee or comparable body, however, could be considered the forum for such review and oversight. §314.00. Certain issuances of common stock to a related party require shareholder approval. §312.03(b).	In accordance with Mexican law, an independent audit committee must provide an opinion to the board of directors regarding any transaction with a related party that is outside of the ordinary course of business, which must be approved by the board of directors. Pursuant to the Mexican Securities Market Law, our Board of Directors may establish certain guidelines regarding related party transactions that do not require specific board approval.
SOLICITATION OF PROXIES
Solicitation of proxies and provision of proxy materials is required for all meetings of shareholders. Copies of such proxy solicitations are to be provided to NYSE. §§402.01 and 402.04.	We are not required to solicit proxies from our shareholders. In accordance with Mexican law and our bylaws, we inform shareholders of all meetings by public notice, which states the requirements for admission to the meeting. Under the deposit agreement relating to our ADSs, holders of our ADSs receive notices of shareholders’ meetings and, where applicable, instructions on how to instruct the depositary to vote at the meeting. Under the deposit agreement relating to our ADS, we may direct the voting of any ADS as to which no voting instructions are received by the depositary, except with respect to any matter where substantial opposition exists or that materially and adversely affects the rights of holders.

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       CONTROLS AND PROCEDURES       

(A) DISCLOSURE CONTROLS AND PROCEDURES We carried out an evaluation under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of our disclosure controls and procedures as of December 31, 2018. Based upon our evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective to provide reasonable assurance that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the applicable rules and forms, and that it is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

(B) MANAGEMENT’S ANNUAL REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act. Under the supervision and with the participation of our management, including our Chief Executive Officer, Chief Financial Officer and other personnel, we conducted an evaluation of the effectiveness of our internal control over financial reporting based on the framework in Internal Control—Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

Our internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with IFRS. Our internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of our assets, (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with IFRS and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on our financial statements.

Because of the inherent limitations in all control systems, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions or that the degree of compliance with the policies or procedures may deteriorate.

Based on our evaluation under the framework in Internal Control—Integrated Framework, our management concluded that our internal control over financial reporting was effective as of December 31, 2018.

Mancera, S.C. (“Mancera”), a member practice of Ernst & Young Global Limited, an independent registered public accounting firm, our independent auditor, issued an attestation report on our internal control over financial reporting on April 11, 2019.

(C) ATTESTATION REPORT OF THE REGISTERED PUBLIC ACCOUNTING FIRM

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Shareholders of

América Móvil, S.A.B. de C.V.

Opinion on Internal Control over Financial Reporting

We have audited América Móvil, S.A.B. de C.V. and subsidiaries’ internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). In our opinion, América Móvil, S.A.B. de C.V. and subsidiaries (the Company) maintained, in all material respects, effective internal control over financial reporting as of December 31, 2018, based on the COSO criteria.

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CONTROLS AND PROCEDURES

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated statements of financial position of the Company as of December 31, 2018 and 2017, the related consolidated statements of comprehensive income, changes in shareholders’ equity and cash flows for each of three years in the period ended December 31, 2018, and the related notes, and our report dated April 11, 2019 expressed an unqualified opinion thereon.

Basis for Opinion

The Company´s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Annual Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company´s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.

Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definitions and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ MANCERA, S.C.

Mexico City, Mexico

April 11, 2019

(D) CHANGES IN INTERNAL CONTROL OVER FINANCIAL REPORTING.

There has been no change in our internal control over financial reporting during 2018 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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       CODE OF ETHICS       

Our Code of Ethics codifies the ethical principles that govern our business and promotes, among other things, honest and ethical conduct, full, fair, accurate, timely and understandable disclosure in reports and documents that we file with, or submit to, the SEC, compliance with applicable governmental laws, rules and regulations, the prompt internal reporting of violations of the Code of Ethics and accountability for adherence to the Code of Ethics. Our Code of Ethics applies to all of our officers, senior management, directors and employees.

The full text of our Code of Ethics may be found on our website at www.americamovil.com.

CORPORATE SUSTAINABILITY REPORT     

We have a corporate sustainability committee that seeks to foster greater operational efficiencies, promote social responsibility and adopt environmentally friendly initiatives.

Our corporate sustainability reports are available on our website at www.americamovil.com.

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PART VI REGULATION

       REGULATION       

MEXICO

Legal Framework

Over the last five years, a new legal framework for the regulation of telecommunications and broadcasting services has been developed in Mexico. This legal framework is based on constitutional amendments passed in June 2013, the Federal Law on Telecommunications and Broadcasting (Ley Federal de Telecomunicaciones y Radiodifusión) enacted in July 2014 and the Federal Law on Economic Competition (Ley Federal de Competencia Económica) enacted in May 2014.

Under the current legal framework, the IFT may determine whether there is a “preponderant economic agent” in the telecommunications sector, based on number of customers, traffic or network capacity. In 2014, the IFT determined that an “economic interest group” consisting of us and our Mexican operating subsidiaries (Telcel, Telmex and Teléfonos del Noroeste, S.A. de C.V. (“Telnor”)), as well as Grupo Carso and Grupo Financiero Inbursa, constitutes the “preponderant economic agent” in the telecommunications sector, based on a finding that we serve more than half of the customers in Mexico, as measured by the IFT on a national basis.

The IFT has authority to impose on any preponderant economic agent a special regulatory regime. The special regime is referred to as “asymmetric” regulation because it applies to one sector participant and not to the others. Pursuant to the IFT’s determination that we are part of a group constituting a preponderant economic agent, we are subject to extensive asymmetric regulations in the telecom sector, which impacts our Mexican fixed-line and wireless businesses. See “—Asymmetric Regulation of the Preponderant Economic Agent” and “—Functional Separation of Telmex and Telnor Wholesale Services” under this Part VI. This legal framework has had a substantial impact on our business and operations in Mexico.

Principal Regulatory Authorities

The IFT is an autonomous authority that regulates telecommunications and broadcasting. It is headed by seven commissioners appointed by the President, and ratified by the Senate, from among candidates nominated by an evaluation committee. The IFT has authority over the

application of legislation specific to the telecommunications and broadcasting sectors, and also over competition legislation as it applies to those sectors. The Mexican Ministry of Communications and Transportation (Secretaría de Comunicaciones y Transportes) retains regulatory authority over a few specific public policy matters.

The Mexican government has certain powers in its relations with concessionaires, including the right to take over the management of an operator’s networks, facilities and personnel in cases of imminent danger to national security, public order or the national economy, natural disasters and public unrest, as well as to ensure continuity of public services.

Telecommunications operators are also subject to regulation by the Federal Consumer Bureau (Procuraduría Federal del Consumidor) under the Federal Consumer Protection Law (Ley Federal de Protección al Consumidor), which regulates publicity, quality of services and information required to be provided to consumers.

Asymmetric Regulation of the Preponderant Economic Agent

We are currently subject to extensive specific asymmetric measures based on the IFT’s determination that we, our Mexican operating subsidiaries (Telcel, Telmex and Telnor) and certain affiliates constitute the preponderant economic agent in the telecommunications sector. Below is a summary of what we believe are the most important measures.

• INTERCONNECTION RATES. The Federal Law on Telecommunications and Broadcasting provides that we are not permitted to charge other carriers for the termination services we provide in our networks. These provisions were declared unconstitution by the Mexican Supreme Court (Suprema Corte de Justicia de la Nación) in August 2017 with respect to wireless services and in April 2018 with respect to fixed services. As a result, the IFT ruled that, as of January 1, 2018, in the case of Telcel, and as of January 1, 2019, in the case of Telmex, we are able to charge other carriers for terminating calls to our networks at asymmetric rates established by the IFT. We continue to pay such carriers for their interconnection services in accordance with the fixed and mobile rates set by the IFT.

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• SHARING OF WIRELESS INFRASTRUCTURE AND SERVICES. We must provide other carriers access to (i) passive infrastructure, including towers, sites, ducts and rights of way, (ii) elements of our network that allow other carriers and mobile virtual network operators (“MVNOs”) to use our network or resell those services we provide to our customers and (iii) domestic roaming services, in each case, pursuant to IFT pre-approved reference terms (ofertas públicas de referencia). If we cannot reach an agreement with other carriers or MVNOs, our rates may be determined by the IFT using a long-run average incremental costs methodology or, in the case of MVNOs, a “retail-minus” methodology.

For mobile services, the IFT has the right to verify, through a replicability test, that mobile virtual network operators can match our end user rates.

• SHARING OF FIXED INFRASTRUCTURE AND SERVICES. We must provide other carriers access to (i) passive infrastructure, including towers, sites, ducts and rights of way, (ii) elements of our network that allow other carriers to use our network or resell those services we provide to our customers and (iii) our dedicated links. If we cannot reach an agreement with other carriers, our rates may be determined by the IFT using a long-run average incremental cost methodology.

For fixed services, the IFT has the right to verify, through a replicability test, that other competitors can match our end user rates.

• ACCESS TO LOCAL LOOP. We must offer other carriers access to elements of our local network separately on terms and conditions (including rates) pre-approved by the IFT. The IFT has also ordered the legal and functional separation of the provision of wholesale regulated fixed services related to local loop (acceso local) and shared access and use of passive infrastructure. See “Functional Separation of Telmex and Telnor Wholesale Services” under this Part VI.

• CERTAIN OBLIGATIONS RELATING TO RETAIL SERVICES. Rates for the provision of telecommunications services to our customers are subject to the IFT’s prior authorization.

We are also subject to certain obligations and restrictions relating to the sale of our services and products; such obligations include unlocking mobile devices for our customers and offering individually all services that we previously offered under a bundled plan.

• CONTENT. We are subject to specific limitations on acquisitions of exclusive transmission rights to “relevant” content (contenidos audiovisuales relevantes), as determined from time to time by the IFT, including the Mexican national team soccer matches, the opening and closing ceremonies and certain matches of the FIFA World Cup, the semifinal and final matches of the Liga MX soccer tournament and the Super Bowl.

• PUBLICATION OF REFERENCE TERMS. We are subject to obligations related to the publication of reference terms for all wholesale and interconnection services that are subject to asymmetric regulation.

The measures are transitory and may be amended or eliminated by the IFT, or terminated if it determines effective competition conditions exist in the telecommunications sector or if we cease to be considered a preponderant economic agent. The IFT reviews the impact of the asymmetrical measures every two years and may modify or eliminate measures or set forth new measures. In March 2017, the IFT issued a resolution that modified and added asymmetrical regulations for mobile and fixed services, including the legal and functional separation of Telmex and Telnor wholesale services, among other measures. The IFT will begin a new review in the first quarter of 2019, which is expected to be completed in the first quarter of 2020. The new review may result in changes, which could include additional or reduced asymmetric regulations or the structural separation or divesture of assets of the preponderant economic agent.

We have challenged the determination that we are a preponderant economic agent and the asymmetric regulations in court. These challenges were denied in the case of Telmex, Telnor and the Company, and a final resolution is still pending in the case of Telcel. However, IFT’s determinations are not suspended while legal challenges against them are resolved.

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       REGULATION

Functional Separation of Telmex and Telnor Wholesale Services

In March 2018, we received notice of an IFT resolution directed to the Company setting forth the terms under which we are required to separate the provision of wholesale regulated fixed services by Telmex and Telnor (the “Separation Plan”).

The Separation Plan establishes, among other provisions, the following:

• WHOLESALE UNIT. Telmex and Telnor must establish a business unit to provide certain wholesale services to other concessionaires, including interconnection, co- location for interconnection, intercity and international long-distance dedicated links, resale of telephone lines, broadband and bundles, as well as certain passive infrastructure services, including shared use of towers.

• NEW COMPANIES. Telmex and Telnor are required to establish separate new corporations (the “New Companies”) to provide wholesale services related to the elements of the access network, including local access dedicated links, as well as those services related to passive infrastructure associated with the access network, such as ducts, poles and rights of way. The New Companies will be direct subsidiaries of Telmex. The main features of the New Companies are as follows:

Financial Viability. The Separation Plan contemplates that the New Companies will be financially viable. The implementation and consequences of this requirement are uncertain, both with respect to the initial composition of the New Companies’ assets and resources and with respect to their subsequent operations. The prices and terms of the services to be provided are generally subject to IFT regulation, which could affect the viability and financial requirements of the New Companies.

Corporate Governance. The New Companies will have their own corporate governance, including: (i) a board of directors with at least seven members, of which a majority (including the Chairman) must be independent; (ii) a Chief Executive Officer and senior officers appointed by the boards of directors, different and independent from those of our Mexican concessionaire subsidiaries; (iii) an independent external auditor; (iv) an Audit Committee chaired by an independent member of the board of

directors; and (v) a Regulatory Compliance Committee entirely composed of independent members. The bylaws of the New Companies must be previously approved by the IFT. Independence for these purposes is used as defined under Mexican Securities Market Law.

• Personnel. The New Companies must have the personnel necessary to operate their assets and to provide wholesale services required by the Separation Plan.

• Systems and Procedures. The New Companies must have procedures, operating and management systems that are independent from those Telmex and Telnor.

• Branding. The New Companies must have their own branding distinct from América Móvil’s concessionaire subsidiaries. The brands must be dissociated from those of Telmex and Telnor within four years.

• Principal Offices. The New Companies must have their own principal offices distinct from those of América Móvil’s concessionaire subsidiaries.

We have until March of 2020 to implement the Separation Plan. As of the date of this annual report, Telmex and Telnor have complied with all milestones of the implementation plan approved by the IFT. The implementation will be complex, and many features remain uncertain and will require further development in consultation with the IFT. As a result, we are not yet able to identify all the possible consequences, but some of the consequences could have a material adverse impact on us.

We have challenged the resolution in Mexican courts. However, legal challenges will not suspend the implementation of the Separation Plan and may not be finally determined before the Separation Plan is fully implemented.

Substantial Market Power Investigations

In 2007, the Federal Antitrust Commission (Comisión Federal de Competencia Económica, or “Cofeco”) initiated two substantial market power investigations against Telcel and determined that Telcel had substantial market power in the mobile termination services market and in the nationwide wireless voice and data services market. Telcel filed challenges against both decisions, and a final resolution of these challenges is still pending. If upheld,

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these decisions would allow the IFT to impose additional requirements as to rates, quality of service and information, among other matters.

In 2007, Cofeco initiated various investigations to evaluate whether Telmex and its subsidiary Telnor have substantial power in the markets for termination, origination, transit and wholesale dedicated-link circuits. Cofeco issued final resolutions concluding that Telmex and Telnor have substantial power in all four markets, which were challenged by Telmex and Telnor. The challenges related to each one of these markets have been denied, effectively upholding Cofeco’s findings. Consequently, the IFT may impose specific tariff requirements or other special regulations with respect to the matters for which the challenges were denied, such as additional requirements regarding disclosure of information or quality of service.

In the case of the market for wholesale dedicated-link leasing, the IFT’s predecessor, Cofetel, published an agreement in the Official Gazette, establishing requirements regarding tariffs, quality of service and information for dedicated-link circuits. Telmex and Telnor have filed petitions for relief against such resolutions, which are still pending. The regulation that could arise from these investigations has been already implemented by the IFT through the special regulatory regime for preponderant agents. However, given the uncertainty of the IFT´s actions, we are not able to identify all possible consequences and as a result an adverse resolution could have an impact on the Company’s future revenues in this market.

Concessions

Under the current legal framework, a carrier of public telecommunications networks, such as Telcel or Telmex, must operate under a concession. The IFT is an autonomous federal agency that grants new or extends existing concessions, which may only be granted to a Mexican citizen or corporation that has agreed to the concession terms and may not be transferred or assigned

without the approval of the IFT. There are two types of concessions:

• NETWORK CONCESSIONS. Telcel, Telmex and its subsidiary Telnor hold network concessions, granted under the previous regulatory framework, to provide specified types of services. Their ability to migrate to the new regime of unified concessions and, consequently, to provide any and all telecommunications and broadcasting services, is subject to conditions,as described under “Migration of Concessions and Additional Services” below.

• SPECTRUM CONCESSIONS. Telcel holds multiple concessions, granted under both the previous and current regulatory frameworks, to provide wireless services that utilize frequencies of radio-electric spectrum. These concessions have terms of 15 to 20 years and may be extended for an additional term of equal length.

A public telecommunications concessionaire is required by law to establish an open-network architecture that permits interconnection and interoperability.

Termination of Concessions

Mexican legislation provides that under certain circumstances, some assets of a concessionaire may be acquired by the federal government upon termination of these concessions.

There is no specific guidance or precedent for applying these provisions, so the scope of assets covered, the compensation to the concessionaire and the procedures to be followed would depend on the type of concession, the type of assets and the interpretation of applicable legislation by the competent authorities at the time.

Migration of Concessions and Additional Services

The new legislative framework established the unified concession (concesión única), which allows the holder to provide all types of telecommunications and broadcasting services, and a regime under which an existing concession can be migrated to the new unified concession at the end of its term or upon request by the concession holder. A unified

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concession has a term of up to 30 years, extendable for up to an equal term. Also, under this new framework a current concession may be modified to add services not previously contemplated therein.

However, as a result of our preponderant economic agent status, Telcel, Telmex and Telnor are subject to additional conditions for the migration to a unified concession or the addition of a service, such as Pay TV, to a current concession, including in certain cases (i) payment of any new concession fee to be determined by the IFT,

(ii) compliance with current requirements under the network concession, the 2013 constitutional amendments, the 2014 legislation and any additional measures imposed by the IFT on the preponderant economic agent and (iii) such other requirements, terms and conditions as the IFT may establish in the concession itself. We expect the process of migration or additional services to be lengthy and complex. Consequently, Telcel, Telmex and Telnor may not be able to provide certain additional services, such as Pay TV and broadcasting, in the near term.

Telcel’s Concessions

Telcel operates under several different network and spectrum concessions covering particular frequencies and regions, holding an average of 175.16 MHz of capacity in

Mexico’s nine regions in the 850 MHz, 1900 MHz,1.7/2.1 GHz and 2.5 GHz bands. The following table summarizes Telcel’s concessions.

FREQUENCY	COVERAGE AREA	INITIAL DATE	TERMINATION DATE	FEE STRUCTURE
Band A (1900 MHz)	Nationwide	Sep.1999	Oct. 2039	Annual
Band D (1900MHz)	Nationwide	Oct. 1998	Oct. 2038	Annual
Band B (850 MHz)	Regions 1, 2, 3	Aug. 2011	Aug. 2026	Annual
Band B (850 MHz)	Regions 4, 5	Aug. 2010	Aug. 2025	Annual
Band B (850 MHz)	Regions 6, 7, 8	Oct. 2011	Oct. 2026	Annual
Band B (850 MHz)	Region 9	Oct. 2015	Oct. 2030	Annual
Band F (1900MHz)	Nationwide	Apr. 2005	Apr. 2025	Annual
Bands A and B (1.7/2.1 GHz)	Nationwide	Oct. 2010	Oct. 2030	Annual
Bands H, I and J (1.7/2.1 GHz)	Nationwide	May 2016	Oct. 2030	Annual
Band 7 (2.5 GHz)	75% of the population	Jul. 2017	Jan. 2024 – Nov. 2028	Annual

Concession Fees

All of Telcel’s concessions granted or renewed on or after January 1, 2003 are required to pay annual fees for the use and exploitation of radio spectrum bands. The amounts payable are set forth by the annual Federal Fees Law (Ley Federal de Derechos) and vary depending on the relevant region and radio spectrum band.

Telmex’s Concessions

Telmex’s concession was granted in 1976 and is currently set to expire in 2026. In December 2016, the IFT granted Telmex a 30-year extension of this concession, which will become effective in 2026 and will be valid until 2056. The new terms of this concession will be issued in early 2023.

Telmex’s subsidiary, Telnor, holds a separate concession, which covers one state and two municipalities in northwestern Mexico and will expire in 2026. The IFT also granted Telnor a 30-year extension of its concession, which will be effective in 2026 and will be valid until 2056. The material terms of Telnor’s concession are similar to those of Telmex’s concession.

In addition, Telmex currently holds concessions for the use of frequencies to provide wireless local access, as well as point-to-point and point-to-multipoint transmission. Telmex obtained these concessions for a term of up to 20 years that may be extended for additional 20-year terms with approval from the IFT. These Telmex concessions, including the 3.5 GHz band, will expire in October 2020 and the extension process is currently under review with the IFT.

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In 2018, Telmex was notified of a resolution issued by the IFT, through which the IFT imposed a fine of Ps.2.5 billion derived from an alleged breach in 2013 and 2014 of certain minimum quality of service goals for dedicated link services. Telmex has exercised all legal remedies challenging such resolution and a final resolution is pending.

Rates for Wireless Service

Wireless services concessionaires are generally free to establish the prices they charge customers for telecommunications services. Wireless rates are not subject to a price cap or any other form of price regulation. The interconnection rates concessionaires charge other operators are also generally established by agreement between the parties and, if the parties cannot agree, may be imposed by the IFT, subject to certain guidelines, cost models and criteria. The IFT publishes at the end of the year the rates they would impose in the event of a dispute, eliminating all incentives for a negotiation among the parties. The establishment of interconnection rates has resulted, and may in the future result, in disputes between carriers and with the IFT.

As a result of the preponderance determination, Telcel’s retail prices are subject to pre-approval by the IFT before they can take effect. In addition, the 2014 legislation established that preponderant economic agents may not charge termination rates. See “— Asymmetric Regulation of the Preponderant Economic Agent” under this Part VI.

The IFT is also authorized to impose specific rate requirements on any carrier that is determined by the IFT to have substantial market power under the Federal Antitrust Law (Ley Federal de Competencia Económica) and the 2014 legislation. For more information on litigation related to the Federal Antitrust Law and the 2014 legislation, see “—Substantial Market Power Investigations” under this Part VI.

Rates for Fixed Service

Telmex’s concessions subject its rates for basic retail telephone services in any period, including installation, monthly rent, measured local-service and long-distance service, to a ceiling on the price of a “basket” of such services, weighted to reflect the volume of each service

provided by Telmex during the preceding period. Telmex is required to file a survey with the IFT every four years with its projections of units of operation for basic services, costs and prices. Telmex is free to determine the structure of its own rates, with the exception of domestic long-distance rates, which were eliminated in 2015 under the 2014 legislation, and of the residential fixed-line rates, which have a cap based on the long-run average incremental cost. As a result of the preponderance determination, Telmex’s retail prices are subject to pre-approval by the IFT before they can take effect.

The price ceiling varies directly with the Mexican National Consumer Price Index (Indice Nacional de Precios al Consumidor), allowing Telmex to raise nominal rates to keep pace with inflation (minus a productivity factor set for the telecommunications industry), subject to consultation with the IFT. Telmex has not raised its nominal rates for many years. Under Telmex’s concession, the price ceiling is also adjusted downward periodically to pass on the benefits of Telmex’s increased productivity to its customers. The IFT sets a periodic adjustment for every four-year period to permit Telmex to maintain an internal rate of return equal to its weighted average cost of capital.

In addition, basic retail telephone services, as well as broadband services and “calling party pays” charges, are subject to a separate price ceiling structure based on productivity indicators. In each case, Telmex is required to submit a survey on productivity indicators to the IFT every two years, including a total factor productivity. The IFT establishes the productivity factor that will apply over the next two years, and, based on this, the IFT will approve the customer prices before they can take effect.

Prices for Telmex’s wholesale services are established by the IFT based on the long-run average incremental cost model methodology.

BRAZIL

Legal Framework and Principal Regulatory Authorities

The Brazilian Telecommunications Law (Lei Geral das Telecomunicações Brasileiras) provides the framework for telecommunications regulation. The primary telecommunications regulator in Brazil is the

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Telecommunications Agency (Agência Nacional de Telecomunicações, or “Anatel”), which has the authority to grant concessions and licenses in connection with telecommunications services and the use of orbits, except broadcasting, and to adopt regulations that are legally binding on telecommunications services providers.

As of the date of this annual report, the Brazilian congress is considering legislation to modernize the current concession-based model to an authorization-based model. The telecom reform bill under review would allow fixed-line concessionaires, such as Claro Brasil, to provide services under an authorization instead of a concession, as long as certain investment-related obligations are met. We are currently unable to assess the impact that such legislation would have in our operations.

Licenses

In 2014, we simplified our corporate structure, and our subsidiaries Embratel, Embratel Participações S.A. (“Embrapar”) and Net Serviços were merged into Claro Brasil, with all licenses previously granted to our subsidiaries transferred to Claro Brasil. Following its acquisition of Brasil Telecomunicações S.A. in 2016, Claro Brasil relinquished the cable TV and data services licenses it had been transferred by Embrapar and Net Serviços.

In 2018 subsidiary Star One merged into Claro Brasil. As a result, all Brasilian satellite operation rights previously granted to Star One were transferred under the same terms and conditions to Claro Brasil. The satellite operation rights (AMC-12) covering regions outside of Brazil were relinquished by Star One before the merger.

Our Brazilian subsidiaries hold licenses for the telecommunications services listed below and expect to continue acquiring spectrum if Anatel conducts additional public auctions, although Claro Brazil, like all of its peer competitors, is subject to a cap on the additional spectrum it may acquire per frequency band.

SUBSIDIARY	LICENSE	TERMINATION DATE
Claro Brasil	Fixed Local Voice Services	Indefinite
	Domestic and International Long-Distance	2025
	Voice Services	Indefinite
	Personal Communication Services	Indefinite
	Data Services	Indefinite
	Cable TV Services	Indefinite
	Mobile Maritime Services	Indefinite
	Global Mobile Satellite Services	Indefinite
Claro TV	DTH TV Services	Indefinite
	Data Services	Indefinite
Americel S.A.	Data Services	Indefinite
Primesys	Data Services	Indefinite
Telmex do Brasil	Data Services	Indefinite

In addition, Claro Brasil has various orbital position authorizations for our satellite operations, which expire between 2020 and 2027, and licenses to provide PCS, which expire between 2020 and 2032.

Concessions

Claro Brasil holds two fixed-line concessions to provide domestic and international long-distance telephone services. The remaining telecommunications services provided by Claro Brasil are governed by a system of licenses instead of concession arrangements.

Concession Fees

Claro Brasil is required to pay a biennial fee equal to 2.0% of net revenues from wireless services, except for the final year of the 15-year term of its PCS authorizations, in which the fee equals 1.0% of net revenues from wireless services.

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Claro Brasil is also required to pay a biennial fee during the term of its domestic and international long-distance concessions equal to 2.0% of the revenues from long- distance telephone services, net of taxes and social contributions, for the year preceding the payment.

Termination of Concessions

Our domestic and international long-distance fixed-line concessions provide that certain of our assets deemed “indispensable” for the provision of these services will revert to the Brazilian state upon termination of these concession. Compensation for those assets would be their depreciated cost. See note 16 to our audited consolidated financial statements included in this annual report.

Regulation of Rates

Anatel regulates rates (tariffs and prices) for all telecommunications services, except for fixed-line broadband services, Pay TV and satellite capacity rates, which are not regulated. In general, PCS license-holders and fixed local voice services license-holders are authorized to increase basic plan rates annually. Domestic long-distance concession-holders may adjust rates annually only for inflation (less a factor determined by Anatel based on the productivity of each operator during the year). Claro Brasil may set international long-distance and mobile rates freely, provided that it gives Anatel and the public advance notice.

Regulation of Wholesale Market Competition

In November 2012, Anatel approved the General Competition Plan (Plano Geral de Metas da Competição, or “PGMC”), a comprehensive regulatory framework aimed at increasing competition in the telecommunications sector. The PGMC imposes asymmetric measures upon economic groups determined by Anatel to have significant market power in any of the five wholesale markets in the telecommunications sector, on the basis of several criteria, including having over 20.0% of market share in the applicable market.

In 2012, Claro Brasil and three of its primary competitors were determined to have significant market power in the mobile wireless termination and national roaming markets. As a result, Claro Brasil was required to reduce mobile termination rates to 75.0% of the 2013 rates by February

2014, and to 50.0% of the 2013 rates by February 2015. In July 2014, Anatel established termination rates for mobile services applicable to operators with significant market power through 2019. Claro Brasil is also required to publish, and Anatel must approve, its reference roaming prices for voice, data and SMS on a semi-annual basis, among other measures.

In addition, Embratel was determined to have significant market power in the market for long-distance leased lines, Claro Brasil and Embratel were determined to have significant market power in the telecommunications infrastructure market, and Net Serviços was determined to have significant market power in the local coaxial transmissions market, together with several of their mobile and fixed-line competitors. Following the merger of Embratel and Net Serviços into Claro Brasil in 2014, Claro Brasil is required to publish, and Anatel must approve, its reference offers in each of these markets. Moreover, wholesale contracts entered into by operators determined to have significant market power for the sale of such operators’ services are overseen for compliance purposes by independent third-party companies.

In 2018, Anatel approved Claro Brasil’s most recent wholesale reference offers with respect to national roaming, telecommunications infrastructure, long- distance leased lines, wireless termination rates, internet network interconnection and internet links, which are reviewed and approved by Anatel on an annual basis.

Anatel also reviews its determination of which operators have significant market power on a quadrennial basis. Anatel began its first review of all telecom operators in 2014 and published the most recent list of operators with significant market power for each of the relevant markets in 2018. In addition to the review, in 2018 Anatel changed some of the asymmetric measures applicable under the PGMC and added two new wholesale markets covering high capacity transport and fixed termination rates. Anatel has determined that Claro Brasil has significant market power in eight wholesale markets.

Network Usage Fees and Fixed-Line Interconnection Rates

In July 2014, Anatel approved a resolution establishing the reference terms for fees charged by operators in connection

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with the use of their mobile network and leased lines and set a price cap on fees charged for fixed network usage by operators deemed to have significant market power. Such fees, based on costs of allocation services (coubicación), have been applicable since February 2016.

Fixed-line operators determined by Anatel to have significant market power in the local fixed-line market may freely negotiate interconnection rates, subject to a price cap established by Anatel.

Other Obligations

Under applicable law and our concessions, Claro Brasil has an obligation to (i) comply with certain coverage obligations to ensure universal access to its fixed-line voice services, (ii) contribute to the funding of the country’s transition from analogue to digital TV, (iii) meet quality-of-service targets and (iv) comply with applicable telecommunications services consumer rights.

COLOMBIA

Legal Framework and Principal Regulatory Authorities

The Information and Communications Ministry (Ministerio de Tecnologías de la Información y las Comunicaciones, or “ICT Ministry”) and the Communications Regulatory Commission (Comisión de Regulación de Comunicaciones, or “CRC”) are responsible for overseeing and regulating the telecommunications sector. The main audiovisual regulatory authority in Colombia with respect to Pay TV services is the National Television Authority (Autoridad Nacional de Televisión, or “ANTV”). Claro is also subject to supervision by other government entities responsible for enforcing other regulations, such as antitrust rules or those protecting consumer rights.

Concessions

Comunicación Celular S.A. (“Comcel”) is qualified to provide fixed and mobile services and was included in the registry of networks and services administered by the ICT Ministry. Such general authorization superseded all of Comcel’s former concession contracts, and, consequently, such former concessions were terminated.

As a result of the termination of Comcel’s former concessions, the ICT Ministry and Comcel began

discussions with respect to the liquidation of the agreements governing those concessions. In light of the decision of the Colombian Constitutional Court (Corte Constitucional de Colombia) holding that certain laws limiting the reversion of assets of telecommunications providers did not apply to concessions granted prior to 1998 and, consequently, that reversion of assets under those earlier concessions would be governed by their contractual terms, the ICT Ministry obtained a domestic award ordering Comcel to revert assets under its earlier concessions to the Colombian government. Comcel challenged such award and the Company filed an international arbitration claim against Colombia arising from Colombia’s measures. For further information on these proceedings, see note 16 to our audited consolidated financial statements included in this annual report.

Licenses and Permits

Comcel holds licenses to provide mobile services in the spectrum frequency bands shown in the table below.

FREQUENCY	BANDWIDTH	TERMINATION DATE
850 MHz	25 MHz	Mar. 2024
1900 MHz	10 MHz	Dec. 2019
	5 MHz	Sept. 2021
	15 MHz	Apr. 2024
	5 MHz	June 2019(1)
2.5 GHz	30 MHz	Aug. 2023
(1) Refers to a temporary license, which we renew on an annual basis.

In 2013, Telmex Colombia S.A. obtained permission to provide Pay TV services under any available technology, pursuant to ANTV’s unified licensing system. The permission will expire in 2020 and may be renewed at the appropriate time for another 10-year term.

In 2017, the ICT Ministry issued a decree approving a higher cap on spectrum acquisitions by operators in low and high frequency bands. This new cap allows Comcel to participate in future spectrum auctions. The ICT Ministry has released its plan to conduct spectrum auctions in the 700 MHz and 1900 MHz bands. Further specifications on the auctions will be published by the ICT Ministry during the third quarter of 2019, while the final resolution containing the auctions’ terms and conditions will be published by the fourth quarter of 2019.

100

Asymmetric Charges

In 2012, the CRC issued resolutions seeking to correct an alleged market failure and imposing the following measures on Comcel: (i) asymmetric charges for mobile and incoming long-distance call terminations by other operators on Comcel’s wireless network, with access rates lower than the rates we pay our competitors, and (ii) restrictions on the rates we charge our users for calls outside our network (off-net calls), which must not exceed the rates we charge for calls within our network (on-net calls). These asymmetric access charges ended in December 2016.

In January 2017, the Colombian government approved symmetrical access charges among established operators like Comcel, Movistar and Tigo. However, under current regulation, new market entrants continue to receive a higher rate than operators for a limited period.

In 2017, the CRC issued a resolution updating the list of relevant telecommunication markets by adding the mobile services market (including bundled mobile voice and data services) and by also including the mobile service market in the list of relevant markets subject to ex-ante regulation. In connection with the mobile services market, the CRC initiated a proceeding to evaluate Comcel’s substantial market power in this new market and, if applicable, the imposition of asymmetric regulatory measures that could affect Comcel. As of the date of this annual report, a resolution is pending.

SOUTHERN CONE

ARGENTINA

Following the election of President Mauricio Macri in 2015, the Argentine government issued a Decree of Necessity and Urgency (Decreto de Necesidad y Urgencia, or “DNU”) to create a new communications ministry and regulator to oversee the telecommunications and media sectors. The National Communications Agency (Ente Nacional de Comunicaciones, or “Enacom”) is now the main telecommunications regulatory authority in Argentina and became operational in 2016.

As part of the measures passed under the DNU, fixed and mobile services providers are prohibited from providing DTH technology, which is currently the fastest way to provide Pay TV services. In 2017, the Argentine government issued a

decree allowing telecommunications providers, including AMX Argentina S.A. (“AMX Argentina”), to provide Pay TV services via cable within a limited number of territories as of January 2018 and to the rest of the country as of January 2019. AMX Argentina has obtained the permissions necessary to provide Pay TV services via cable in accordance with the decree to the territories approved by Enacom.

AMX Argentina holds licenses in the 700 MHz, 900 MHz, 1700/2100 MHz (AWS), 1900 MHz and 2600 MHz frequency bands, some of which expire in 15 years and some of which have no expiration date. Each license also contains certain coverage parameters, reporting and service requirements and provides Enacom a revocation right upon a material breach of the license terms.

All telecommunications providers in Argentina must contribute approximately 1.0% of their monthly revenues to finance the provision of telecommunications services in underserved areas and to underserved persons. All providers must also meet certain quality-of-service requirements.

CHILE

The General Telecommunications Law (Ley General de Telecomunicaciones) establishes the legal framework for telecommunications services in Chile, including the regulation of concessions, permits, rates and interconnection. The main regulatory agency of the telecommunications sector is the Chilean Transportation and Communications Ministry (Ministerio de Transportes y Telecomunicaciones), which acts primarily through the Undersecretary of Telecommunications (Subsecretaría de Telecomunicaciones, “SUBTEL”).

Claro Chile S.A. (“Claro Chile”) holds concessions to provide mobile and fixed-line services in the 700MHz, 850 MHz, 1900 MHz, 2.6 GHz, 3.4 GHz and 5.8 GHz frequency bands. Except for the concession to provide services in the 850 MHz frequency, which has an indefinite termination date, the concessions to provide services in the 700 MHz, 1900 MHz, 2.6 GHz, 3.4 GHz and 5.8 GHz frequencies have termination dates that vary from 2027 to 2045. Claro Chile also holds license to provide DTH technology services until 2024 and a license with an indefinite term to provide Pay TV services. In 2018, the Chilean Supreme Court (Corte

101

       REGULATION

Suprema de Justicia) issued a ruling requiring Claro to return 20 MHz of spectrum acquired through a band auction because Claro exceeded the limit of spectrum any given operator is permitted to hold. The return of such spectrum, including if and how such return should be implemented, is currently under discussion before the Competition Court (Tribunal de Defensa de la Libre Competencia, or the “TDLC”). In addition, pursuant to the ruling, and in order to increase the maximum limit, SUBTEL initiated a review of such limit of spectrum through a regulatory proceeding initiated before the TDLC which is in progress.

In 2018, SUBTEL issued a ruling to freeze Claro Chile´s use of 50 MHz in the 3.5 MHz band for the provision of wireless fixed services. Claro Chile has challenged such ruling. SUBTEL subsequently issued a new ruling unfreezing 30 MHz, allowing Claro Chile to provide wireless fixed services. Claro Chile has withdrawn its challenge, while the other 20 MHz remains temporarity frozen.

Some of Claro Chile’s concessions impose additional requirements, such as coverage, reporting and service quality requirements. The Chilean Transportation and Communications Ministry is authorized to terminate any concession in the event of specified breaches under the terms of such concessions. Additionally, Claro Chile’s concession in the 700 MHz band imposes certain obligations to expand mobile and data services in rural areas. In 2017, the Undersecretary of Telecommunication approved Claro Chile’s expansion project in connection with its obligations under its concession in the 700 MHz band.

PARAGUAY

The National Telecommunications Commission of Paraguay (Comisión Nacional de Telecomunicaciones de Paraguay) is in charge of supervising the telecommunications industry in Paraguay. It is authorized to cancel licenses in the event of specified breaches of the terms of a license.

AMX Paraguay, S.A. (“AMX Paraguay”) holds licenses to operate in the 1900 MHz and the 1700/2100 MHz bands. AMX Paraguay also holds a nationwide internet access and data transmission license. In addition, AMX Paraguay holds licenses to provide DTH services and cable TV services.

Additionally, in January 2018, AMX Paraguay participated in a spectrum auction and was awarded a license to provide telecommunications services in the 700 MHz band. In November 2018, the Telecommunications Commission of Paraguay granted the renewal of spectrum license in the 1900 MHz band. These licenses are renewable, subject to regulatory approval, and contain coverage, reporting and service requirements.

URUGUAY

The Regulatory Unit of Communications Services (Unidad Reguladora de Servicios de Comunicaciones) is in charge of the regulation of the telecommunications industry in Uruguay.

AM Wireless Uruguay, S.A. holds licenses to operate in the 1900 MHz, 1700/2100 MHz and 700 MHz frequency bands that expire in 2024, 2033 and 2037, respectively, and Telstar, S.A. holds licenses to provide international long-distance communications and mobile data services that have no expiration date

The license initially granted to Flimay S.A. (“Flimay”) to provide DTH technology services in Uruguay has been contested by the government since 2012. In 2017, the executive branch of Uruguay held under a new ruling that Flimay does not have a valid license to provide DTH services in the country. Flimay requested this ruling be voided, but in February 2018, the executive branch of Uruguay, with support from the Administrative Court (TCA), requested the process be closed. As of the date of this annual report, a decision on Flimay’s appeal is pending.

ANDEAN REGION

ECUADOR

The primary regulatory authorities for our mobile and fixed-line operations are the National Telecommunications, Regulation and Control Agency (Agencia de Regulación y Control de las Telecomunicaciones, or “Arcotel”) and the Telecommunications and Information Society Ministry (Ministerio de Telecomunicaciones y Sociedad de la Información, or “Mintel”). Arcotel is responsible for the licensing and oversight of radio-electric spectrum use and telecommunications services provisions. Mintel is responsible for the promotion of equal access to telecommunications services.

102

The Telecommunications Law (Ley Orgánica de Telecomunicaciones), adopted in 2015, serves as the legal framework for telecommunications services. It established new regulations for operators with significant market power, new penalties based on their gross incomes as well as additional fees also based on an operator’s gross income, but that can vary depending on the size of their market share. Consorcio Ecuatoriano de Telecomunicaciones, S.A. (“Conecel”) has been deemed to have significant market power in the advanced wireless services market, and as a result, such fee payments are made on a quarterly basis on the dates established by Arcotel.

For fiscal year 2018, Conecel has an obligation to pay the Ecuadorian government 3.0% of its wireless services for 2018, which represents approximately Ps.1.0 billion (U.S.$29.9 million). As of the date of this annual report, Conecel has paid the Ecuadorian government Ps.0.8 billion (U.S.$22.4 million), which represents 3.0% of such revenues generated in the first three quarters of 2018. Conecel has made a provision for Ps.0.3 billion (U.S.$7.5 million), which corresponds to the approximate amount owed for the fourth quarter of 2018 and will be paid in due course. An arbitration proceeding to partially void the payment by Conecel of such fees was conducted and a decision in favor of the government was reached. Conecel has appeal this decision and, as of the date of this annual report, a decision on Conecel’s appeal is pending.

Conecel holds concessions to operate in the 850MHz, 1900 MHz and AWS bands, which include concessions for PCS that expire in 2023. The PCS concession contains quality-of- service requirements for successful call completions, SMS delivery times, customer service, geographic coverage and other service conditions.

Conecel also holds licenses to provide internet value- added services, Pay TV Services (through DTH technology) and bearer services, expiring in 2021, 2023 and 2032, respectively.

Conecel, following the acquisition of Ecuador Telecom, S.A. in 2016, also holds a concession to offer fixed-line voice, public telephone and domestic and international long- distance wholesale services, as well as a license to provide Pay TV (through HFC technology) that expires in 2031.

Recalculation of Concession Fees

Arcotel initiated several proceedings to recalculate the variable portion of the concession fees payable under Conecel’s concessions, which, as of the date of this annual report, is equivalent to 2.93% of Conecel’s annual subscriber base revenues, in addition to its contribution for Universal Service (Servicio Universal 1%). These recalculation proceedings with Arcotel remain ongoing.

In 2018, Conecel paid Arcotel U.S.$11.9 million based on its annual revenues for the 2015 period and is required to pay U.S.$13 million based on its annual revenues for the 2016 period. However, Conecel obtained a judicial order that suspended the collection process for the 2016 period.

For its Universal Service contribution, Conecel is required to pay U.S.$5 million for the 2015 period and U.S.$6 million for the 2016 period. However, Conocel obtained a judicial order that suspended the collection process for the 2015 and 2016 periods.

PERU

The Supervisory Agency for Private Investment in Telecommunication (Organismo Supervisor de la Inversión Privada en Telecomunicaciones, or “OSIPTEL”) is in charge of the regulation of the telecommunications industry in Peru. The Ministry of Transport and Communications (Ministerio de Transportes y Comunicaciones or “MTC”) grants concessions, permits and licenses. The Telecommunications Law (Decreto Supremo N° 013-93-TCC Ley de Telecomunicaciones), adopted in 1993, serves as the legal framework for telecommunications services.

América Móvil Perú, S.A.C. (“Claro Perú”) holds nationwide concessions to provide wireless, PCS, fixed-line, local wholesale, domestic and international long-distance, Pay TV services (through DTH and HFC technologies), public telephone and value-added services (including internet access). The concessions allow Claro Perú to operate on the 450 MHz, 700 MHz, 850 MHz, 1900 MHz, 3.5 GHz and 10.5 GHz bands. As part of Claro Perú’s acquisition of Olo del Perú S.A.C., TVS Wireless S.A.C. and their respective subsidiaries in 2016, Claro has a resale agreement with such companies to operate in certain regions on the 2.5 GHz band.

103

       REGULATION

Each of the concessions was awarded by the MTC and covers a 20-year period. The concessions contain coverage, reporting, service requirement and spectral efficiency goals. The MTC is authorized to cancel any of the concessions in the case of specified breaches of its terms.

The MTC has drafted a spectrum refarming proposal on the 2.5 Ghz band considering a new band distribution that grants 80 Mhz nationwide to Olo del Peru S.A.C. and TVS Wireless S.A.C. Currently, the spectrum refarming process is subject to comments from the public. A final decision on the proposal will be issue in July 2019.

EUROPE AND OTHER JURISDICTIONS

European Legal Framework and Principal Regulatory Authorities

The telecommunications regulatory framework in the EU is based on five Directives (“Framework”, “Access and Interconnection”, “Authorization”, “Universal Service and Users’ Rights” and “Privacy and Data Protection”) that apply to all EU member countries and regulate all forms of fixed and wireless services, internet, broadcasting and transmission services. Austria, Bulgaria, Croatia and Slovenia are EU member countries. Macedonia and Serbia, candidates for accession to the EU, are expected to gradually harmonize their regulatory frameworks with the EU’s framework.

In each European country in which we operate, we are also subject to a domestic telecommunications regulatory framework and to oversight by one or more local regulators.

Licenses

COUNTRY	FREQUENCY		TERMINATION DATE
AUSTRIA		800 MHz		Dec. 2029
		900 MHz		Dec. 2034
		1800 MHz		Dec. 2034
		2100 MHz		Dec. 2020
		2600 MHz		Dec. 2026
BULGARIA		900 MHz		June 2024
		1800 MHz		June 2024
		2100 MHz		Apr. 2025
CROATIA		800 MHz		Oct. 2024
		900 MHz		Oct. 2024
		1800 MHz		Oct. 2024
		2100 MHz		Oct. 2024
BELARUS		900 MHz		Dec. 2020
		1800 MHz		Dec. 2020
		2100 MHz		Dec. 2020
SLOVENIA		800 MHz		May 2029
		900 MHz		Jan. 2031
		1800 MHz		Jan. 2031
		2600 MHz		May 2029
		2100 MHz		Sept. 2021
SERBIA		800 MHz		Jan. 2026
		900 MHz		Nov. 2026
		1800 MHz		Nov. 2026
		2100 MHz		Nov. 2026
MACEDONIA		800 MHz		Dec. 2033
		1800 MHz		Dec. 2033
		900 MHz		Sept. 2023
		2100 MHz		Feb. 2028

104

OTHER JURISDICTIONS

COUNTRY	PRINCIPAL REGULATORY AUTHORITIES	CONCESSION AND LICENSES
COSTA RICA	Superintendency of Telecommunications (Superintendencia de Telecomunicaciones) Ministry of Science, Technology and Telecommunications (Ministerio de Ciencia, Tecnología y Telecomunicaciones)	•  Concessions in the AWS and 1800 MHz bands that expire in 2032 •  Concessions in the 2100 MHz band that expire in 2026 •  License to operate Pay TV services using DTH technology that will expire in 2027
EL SALVADOR	Electricity and Telecommunications Superintendency (Superintendencia General de Electricidad y Telecomunicaciones)	•  Concession of 50 MHz in the 1900 MHz band of which 30 MHz that expire in 2038, 10 MHz that expire in 2041 and 10 MHz that expire in 2028 •  Concession to provide public telephone service that expires in 2027 •  Licenses to provide Pay TV Services through HFC and DTH technologies have an indefinite term
GUATEMALA	Guatemalan Telecommunications Agency (Superintendencia de Telecomunicaciones)	•  Licenses to use 12 MHz in the 900 MHz band and 40 MHz in the 1900 MHz band that all expire in 2033 •  Concession of 50 MHz in the 3.5 GHz band that will expire in 2033
NICARAGUA	Nicaraguan Telecommunications and Mailing Institute (Instituto Nicaragüense de Telecomunicaciones y Correos)	•  Concessions in the 700 MHz, 850 MHz, 1900 MHz and 1700/2100 MHz bands that all expire in 2032 •  Concession of 50 MHz in the 3.5 GHz band that will expire in 2042 •  Licenses to provide DTH technology that will expire in January 2028 (re- newal granted in 2018) and Pay TV services that has an indefinite term
HONDURAS	Honduran National Telecommunications Commission (Comisión Nacional de Telecomunicaciones)	•  Concessions to use 80 MHz in the 1900 MHz PCS band and 40 MHz in the LTE-4G 1700/2100 MHz band that all expire in 2033 •  Licenses to operate Pay TV services through (i) HFC technology that will expire in 2027 and (ii) DTH technology that will expire in 2020
PANAMA	National Authority of Public Services (Autoridad Nacional de los Servicios Públicos)	•  License to use 40 MHz in the 1900 MHz and 20 MHz in the 700 MHz bands that all expire in 2028 •  Licenses to provide fixed local and long-distance services that expire in 2030

105

REGULATION     

COUNTRY	PRINCIPAL REGULATORY AUTHORITIES	CONCESSION AND LICENSES
		•  License to provide Internet service that expires in 2033 •  Licenses to provide international long-distance, value-added services, interactive television, and Pay TV service through DTH and IPTV tech- nologies, which expire in 2028, 2030, 2037 and 2034, respectively
UNITED STATES	The FCC	•  International Section 214 Authorization (Claro Enterprise Solutions).
DOMINICAN REPUBLIC	Dominican Institute of Telecommunications (Instituto Dominicano de las Telecomunicaciones)	•  Concessions to use 25 MHz in the 800 MHz band, 30 MHz in the 1900 MHz band, 80 MHz in the 2.5/2.7 GHz band, 30 MHz in the 3.5 GHz band and 40 MHz in the 1.7/2.1 GHz (AWS) band that expire in 2030 •  Licenses to provide Pay TV Services through DTH and IPTV technologies that expire in 2030
PUERTO RICO	FCC and the Telecommunications Regulatory Board of Puerto Rico	•  Concessions to use the 700 MHz, 1900 MHz and the 30 GHz bands that expire in 2021, 2027 and 2019, respectively •  Concessions to use the 800 MHz that expire in March 2018 (for which an application for renewal has been submitted), 2020, 2021 and 2026 •  Concessions to use the 1.7/2.1 GHz bands that expire in 2026 and 2028 •  Long-term transfer lease concessions to use 35.6 MHz of the 2.5 GHz EBS band that expire in 2020, 2022, 2023, 2025 and 2026 •  Franchise to operate Pay TV Services using IPTV technology that expires in 2030

106

PAGE INTENTIONALLY BLANK

PART VII ADDITIONAL INFORMATION

EMPLOYEES       

Many of our employees are members of labor unions with which we conduct collective negotiations on wages, benefits and working conditions. We believe that we have good current relations with our workforce.

The following table sets forth the total number of employees and a breakdown of employees by main category of activity and geographic location, as of the end of each year in the three-year period ended December 31, 2018.

	DECEMBER 31,
	2016		2017		2018
NUMBER OF EMPLOYEES		194,431		191,851		189,448
CATEGORY OF ACTIVITY:
Wireless		78,887		78,910		77,845
Fixed		97,104		94,496		92,429
Other businesses		18,440		18,445		19,174
GEOGRAPHIC LOCATION:
Mexico		90,306		88,417		88,613
South America		65,817		64,619		62,500
Central America		9,767		9,694		9,586
United States		848		852		848
Caribbean		9,488		9,311		9,195
Europe		18,205		18,958		18,706

LEGAL PROCEEDINGS       

In each of the countries in which we operate, we are party to various legal proceedings in the ordinary course of business. These proceedings include tax, labor, antitrust, contractual matters and administrative and judicial proceedings concerning regulatory matters such as interconnection and tariffs. We are party to a number of proceedings regarding our compliance with administrative rules and regulations and concession standards.

Our material legal proceedings are described in note 16 to our audited consolidated financial statements included in this annual report and in “Regulation” under Part VI of this annual report.

110

       PRINCIPAL ACCOUNTANT FEES AND SERVICES     

AUDIT AND NON-AUDIT FEES

The following table sets forth the fees billed to us and our subsidiaries by our independent registered public accounting firm, Mancera, during the fiscal years ended December 31, 2017 and 2018:

	YEAR ENDED DECEMBER 31,
	2017		2018
	(in millions of Mexican pesos)
Audit fees(1)		Ps.         245		Ps.         248
Audit-related fees(2)		31		23
Tax fees(3)		34		30
Total fees		Ps.         310		Ps         301

⁽¹⁾ Audit fees represent the aggregate fees billed by Mancera and its Ernst & Young Global affiliated firms in connection with the audit of our annual financial statements and statutory and regulatory audits.

⁽²⁾ Audit-related fees represent the aggregate fees billed by Mancera and its Ernst & Young Global affiliated firms for the review of reports on our operations submitted to IFT and attestation services that are not required by statute or regulation.

⁽³⁾ Tax fees represent fees billed by Mancera and its Ernst & Young Global affiliated firms for tax compliance services, tax planning services and tax advice services.

AUDIT AND CORPORATE PRACTICES COMMITTEE APPROVAL POLICIES AND PROCEDURES

Our audit and corporate practices committee has established policies and procedures for the engagement of our independent auditors for services.

Our audit and corporate practices committee expressly approves any engagement of our independent auditors for audit or non-audit services provided to us or our subsidiaries. Prior to providing any service that requires specific pre-approval, our independent auditor and our Chief Financial Officer present to the audit committee a request for approval of services in which they confirm that the request complies with the applicable rules.

111

ADDITIONAL INFORMATION       

We file reports, including annual reports on Form 20-F, and other information with the SEC pursuant to the rules and regulations of the SEC that apply to foreign private issuers.

Any filings we make electronically will be available to the public over the internet at the SEC’s web site at www.sec.gov and at our website at www.americamovil.com. This URL is intended to be an inactive textual reference only. It is not intended to be an active hyperlink to our website. The information on our website, which might be accessible through a hyperlink resulting from this URL, is not incorporated into this annual report.

The following documents have been filed with the SEC as exhibits to this annual report:

1.1	Amended and Restated Bylaws (estatutos sociales) of América Móvil, S.A.B. de C.V., dated as of April  16, 2018 (together with an English translation) (incorporated by reference to Exhibit 1.1 of our annual report on Form 20-F File No. 001-16269, filed on April  26, 2018).
8.1	List of certain subsidiaries of América Móvil, S.A.B. de C.V.
12.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes- Oxley Act of 2002.
12.2	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
13.1	Certification pursuant to Section 906 of the Sarbanes- Oxley Act of 2002.
15.1	Code of Ethics (incorporated by reference to Exhibit 14.1 of our annual report on Form 20-F, File No. 001-16269, filed on April 26, 2018).
15.2	Consent of independent registered public accounting firm.
101.INS	XBRL Instance Document.
101.SCH	XBRL Taxonomy Extension Schema Document.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.
101.DEF	XBRL Taxonomy Extension Definition Document.

Omitted from the exhibits filed with this annual report are certain instruments and agreements with respect to long-term debt of América Móvil, none of which authorizes securities in a total amount that exceeds 10% of the total assets of América Móvil. We hereby agree to furnish to the SEC copies of any such omitted instruments or agreements as the Commission requests.

112

       FORWARD-LOOKING STATEMENTS     

Some of the information contained or incorporated by reference in this annual report constitutes “forward-looking statements” within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Although we have based these forward-looking statements on our expectations and projections about future events, it is possible that actual events may differ materially from our expectations. In many cases, we include, together with the forward-looking statements themselves, a discussion of factors that may cause actual events to differ from our forward-looking statements.

Examples of forward-looking statements include the following:

• projections of our commercial, operating or financial performance, our financing, our capital structure or our other financial items or ratios;

• statements of our plans, objectives or goals, including those relating to acquisitions, competition and rates;

• statements concerning regulation

• or regulatory developments;

• statements about our future economic performance or that of Mexico or other countries in which we operate;

• competitive developments in the telecommunications sector;

• other factors and trends affecting the telecommunications industry generally and our financial condition in particular; and

• statements of assumptions underlying the foregoing statements.

We use words such as “believe,” “anticipate,” “plan,” “expect,” “intend,” “target,” “estimate,” “project,” “predict,” “forecast,” “guideline,” “should” and other similar expressions to identify forward-looking statements, but they are not the only way we identify such statements.

Forward-looking statements involve inherent risks and uncertainties. We caution you that a number of important factors could cause actual results to differ materially from the plans, objectives, expectations, estimates and intentions expressed in such forward-looking statements. These factors, some of which are discussed under “Risk Factors,” include economic and political conditions and government policies in Mexico, Brazil, Colombia, Europe and elsewhere, inflation rates, exchange rates, regulatory developments, technological improvements, customer demand and competition. We caution you that the foregoing list of factors is not exclusive and that other risks and uncertainties may cause actual results to differ materially from those in forward-looking statements. You should evaluate any statements made by us in light of these important factors.

Forward-looking statements speak only as of the date they are made. We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information or future events or for any other reason.

113

FORM 20-F CROSS REFERENCE GUIDE       

ITEM	FORM 20-F CAPTION	LOCATION IN THIS REPORT	PAGE
1	IDENTITY OF DIRECTORS, SENIOR MANAGEMENT AND ADVISERS	Not applicable	—
2	OFFER STATISTICS AND EXPECTED TIMETABLE	Not applicable	—
3	KEY INFORMATION
	3A Selected financial data	Selected financial data	2
	3B Capitalization and indebtedness	Not applicable	—
	3C Reasons for the offer and use of proceeds	Not applicable	—
	3D Risk factors	Risk factors	47
4	INFORMATION ON THE COMPANY
	4A History and development of the Company	Information on the Company	5
		Note 10—Property, Plant and Equipment, Net	F-42
		Liquidity and capital resources	37
		Additional Information	112
	4B Business overview	Information on the Company	5
		Regulation	91
	4C Organizational structure	Exhibit 8.1	—
	4D Property, plant and equipment	Information on the Company	5
		Note 10—Property Plant and Equipment, Net	F-42
		Liquidity and capital resources	37
		Regulation	91
4A	Unresolved staff comments	None	—
5	OPERATING AND FINANCIAL REVIEW AND PROSPECTS
	5A Operating results	Overview	20
		Results of operations	22
		Regulation	91
		Liquidity and capital resources	37
	5B Liquidity and capital resources	Note 14—Debt	F-53
	5C Research and development, patents and licenses, etc.	Not applicable	—
	5D Trend information	Overview	20
		Results of operations	22
	5E Off-balance sheet arrangements	Off-balance sheet arrangement	37
	5F Tabular disclosure of contractual obligations	Contractual obligations	38
6	DIRECTORS, SENIOR MANAGEMENT AND EMPLOYEES
	6A Directors and senior management	Management	74
	6B Compensation	Management	83
	6C Board practices	Management	74
		Management	83
	6D Employees	Employees	110

114

ITEM	FORM 20-F CAPTION	LOCATION IN THIS REPORT	PAGE
	6E Share ownership	Major shareholders		60
		Management		83
7	MAJOR SHAREHOLDERS AND RELATED PARTY TRANSACTIONS
	7A Major shareholders	Major shareholders		60
	7B Related party transactions	Related party transactions		61
	7C Interests of experts and counsel	Not applicable		—
8	FINANCIAL INFORMATION
	8A Consolidated statements and other financial information	Consolidated Financial Statements		119
		Dividends		62
		Note 16—Commitments and Contingencies		F-60
	8B Significant changes	Not applicable		—
9	THE OFFER AND LISTING
	9A Offer and listing details	Trading markets		62
	9B Plan of distribution	Not applicable		—
	9C Markets	Trading markets		62
	9D Selling shareholders	Not applicable		—
	9E Dilution	Not applicable		—
	9F Expenses of the issue	Not applicable		—
10	ADDITIONAL INFORMATION
	10A Shareholders’ equity	Bylaws		63
	10B Memorandum and articles of association	Bylaws		63
	10C Material contracts	Information on the Company		5
		Results of operations		22
		Related party transactions		61
		Regulation		91
	10D Exchange controls	Additional information		112
	10E Taxation	Taxation of shares and ADSs		68
	10F Dividends and paying agents	Not applicable		—
	10G Statement by experts	Not applicable		—
	10H Documents on display	Additional information		112
	10I Subsidiary information	Not applicable		—
11	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	Risk management		42
		Note 2 a)—Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices		F-7

115

     FORM 20-F CROSS REFERENCE GUIDE

ITEM	FORM 20-F CAPTION	LOCATION IN THIS REPORT	PAGE
12	DESCRIPTION OF SECURITIES OTHER THAN EQUITY SECURITIES
	12A Debt securities	Not applicable	—
	12B Warrants and rights	Not applicable	—
	12C Other securities	Not applicable	—
	12D American Depositary Shares	Depositary shares	66
13	DEFAULTS, DIVIDEND ARREARAGES AND DELINQUENCIES	Not applicable	—
14	MATERIAL MODIFICATIONS TO THE RIGHTS OF SECURITY
	HOLDERS AND USE OF PROCEEDS	Not applicable	—
15	CONTROLS AND PROCEDURES	Controls and procedures	87
16A	AUDIT COMMITTEE FINANCIAL EXPERT	Management	74
16B	CODE OF ETHICS	Code of ethics	89
16C	PRINCIPAL ACCOUNTANT FEES AND SERVICES	Principal accountant fees and services	111
16D	EXEMPTIONS FROM THE LISTING STANDARDS FOR AUDIT COMMITTEES	Not applicable	—
16E	PURCHASES OF EQUITY SECURITIES BY THE ISSUER AND AFFIIATED PURCHASERS	Purchases of equity securities by the issuer and affiliated purchasers	67
16F	CHANGE IN REGISTRANT’S CERTIFYING ACCOUNTANT	Not applicable	—
16G	CORPORATE GOVERNANCE	Corporate governance	73
16H	MINE SAFETY DISCLOSURE	Not applicable	—
17	FINANCIAL STATEMENTS	Not applicable	—
18	FINANCIAL STATEMENTS	Consolidated Financial statements	119
19	EXHIBITS	Additional Information	112

116

SIGNATURES       

The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized the undersigned to sign this annual report on its behalf.

Dated: April 11, 2019

AMÉRICA MÓVIL, S.A.B. DE C.V.

By:	/s/ Carlos José García Moreno Elizondo
Name:	Carlos José García Moreno Elizondo
Title:	Chief Financial Officer

By:	/s/ Alejandro Cantú Jiménez
Name:	Alejandro Cantú Jiménez
Title:	General Counsel

117

PART VIII CONSOLIDATED FINANCIAL STATEMENTS

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Consolidated Financial Statements

Years Ended December 31, 2016, 2017 and 2018

with Report of Independent Registered Public Accounting Firm

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Consolidated Financial Statements

Years Ended December 31, 2016, 2017, and 2018

Contents:

Report of Independent Registered Public Accounting Firm	F-2
Audited Consolidated Financial Statements:
Consolidated Statements of Financial Position	F-3
Consolidated Statements of Comprehensive Income	F-4
Consolidated Statements of Changes in Shareholders’ Equity	F-5
Consolidated Statements of Cash Flows	F-6
Notes to Consolidated Financial Statements	F-7

F-1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Shareholders of

América Móvil, S.A.B. de C.V.

Opinion on the Financial Statements

We have audited the accompanying consolidated statements of financial position of América Móvil, S.A.B. de C.V. and subsidiaries (the Company) as of December 31, 2018 and 2017, the related consolidated statements of comprehensive income, changes in shareholders’ equity and cash flows for each of three years in the period ended December 31, 2018, and the related notes (collectively referred to as the “financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the consolidated financial position of the Company as of December 31, 2018 and 2017, and the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2018, in conformity with International Financial Reporting Standards, as issued by the International Accounting Standards Board.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company´s internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 Framework) and our report dated April 11, 2019 expressed an unqualified opinion thereon.

Basis for Opinion

These financial statements are the responsibility of the Company´s management. Our responsibility is to express an opinion on the Company´s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

/s/ MANCERA, S.C.

We have served as the Company´s auditor since 1993.

Mexico City, Mexico

April 11, 2019

F-2

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Consolidated Statements of Financial Position

(In thousands of Mexican pesos)

	Note		At December 31,
			2017			2018			2018 Millions of U.S. dollars
Assets
Current assets:
Cash and cash equivalents		3	Ps.	24,270,473		Ps.	21,659,962		US$	1,100
Equity investments at fair value through OCI and other short-term investments		4		59,120,676			49,015,934			2,490
Accounts receivable:
Subscribers, distributors, recoverable taxes, contract assets and other, net		5		193,776,144			216,226,920			10,986
Related parties		6		868,230			1,263,605			64
Derivative financial instruments		7		8,037,384			5,287,548			269
Inventories, net		8		38,809,565			40,305,362			2,048
Other current assets, net		9		17,352,746			15,296,193			777
Total current assets			Ps.	342,235,218		Ps.	349,055,524		US$	17,734
Non-current assets:
Property, plant and equipment, net		10	Ps.	676,343,198		Ps.	640,000,720		US$	32,516
Intangibles, net		11		143,539,626			122,137,703			6,205
Goodwill		11		151,463,232			145,566,497			7,396
Investments in associated companies				3,735,172			3,132,707			159
Deferred income taxes		13		116,571,349			111,186,768			5,649
Accounts receivable, subscriber, distributors and contract assets, net		5		9,786,581			15,681,872			797
Other assets, net		9		42,537,476			42,461,601			2,157
Total assets			Ps.	1,486,211,852		Ps.	1,429,223,392		US$	72,613
Liabilities and equity
Current liabilities:
Short-term debt and current portion of long-term debt		14	Ps.	51,745,841		Ps.	96,230,634		US$	4,889
Accounts payable		15a		212,673,407			221,957,267			11,277
Accrued liabilities		15b		67,752,758			56,433,691			2,867
Income tax				9,362,009			19,232,191			977
Other taxes payable				24,387,484			23,979,334			1,218
Derivative financial instruments		7		10,602,539			13,539,716			688
Related parties		6		2,540,412			2,974,213			151
Deferred revenues				34,272,047			32,743,843			1,664
Total current liabilities			Ps.	413,336,497		Ps.	467,090,889		US$	23,731
Non-current-liabilities:
Long-term debt		14	Ps.	646,139,058		Ps.	542,691,819		US$	27,572
Deferred income taxes		13		11,997,364			24,573,441			1,248
Income tax				8,622,500			7,891,042			401
Deferred revenues				3,183,727			3,239,301			165
Derivative financial instruments		7		3,756,921			3,567,863			181
Asset retirement obligations		15c		18,245,129			15,971,601			811
Employee benefits		17		120,297,139			118,325,014			6,012
Total non-current liabilities			Ps.	812,241,838		Ps.	716,260,081		US$	36,390
Total liabilities			Ps.	1,225,578,335		Ps.	1,183,350,970		US$	60,121
Equity:
Capital stock		19	Ps.	96,338,508		Ps.	96,338,378		US$	4,895
Retained earnings:
Prior years				141,761,677			184,689,288			9,383
Profit for the year				29,325,921			52,566,197			2,670
Total retained earnings				171,087,598			237,255,485			12,053
Other comprehensive loss items				(73,261,794	)		(137,598,218	)		(6,990	)
Equity attributable to equity holders of the parent				194,164,312			195,995,645			9,958
Non-controlling interests				66,469,205			49,876,777			2,534
Total equity				260,633,517			245,872,422			12,492
Total liabilities and equity			Ps.	1,486,211,852		Ps.	1,429,223,392		US$	72,613

The accompanying notes are an integral part of these consolidated financial statements.

F-3

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Consolidated Statements of Comprehensive Income

(In thousands of Mexican pesos, except for earnings per share)

	Note	For the year ended December 31
		2016			2017			2018			2018 Millions of U.S. dollars, except for earnings per share
Operating revenues:
Revenues services		Ps.	831,885,365		Ps.	878,411,323		Ps.	863,647,642		US$	43,878
Sales of equipment			143,527,123			143,222,212			174,560,039			8,869
		Ps.	975,412,488		Ps.	1,021,633,535		Ps.	1,038,207,681		US$	52,747
Operating costs and expenses:
Cost of sales and services			485,060,579			496,335,746			508,822,430			25,851
Commercial, administrative and general expenses			228,101,116			240,634,431			227,192,478			11,543
Other expenses			4,114,562			24,345,113			6,923,022			352
Depreciation and amortization	9,10 and 11		148,525,921			160,174,942			155,712,580			7,911
		Ps.	865,802,178		Ps.	921,490,232		Ps.	898,650,510		US$	45,657
Operating income		Ps.	109,610,310		Ps.	100,143,303		Ps.	139,557,171		US$	7,090
Interest income			4,192,595			2,925,648			10,646,169			541
Interest expense			(33,862,012	)		(30,300,781	)		(31,771,433	)		(1,614	)
Foreign currency exchange loss, net			(40,427,407	)		(13,818,951	)		(7,261,956	)		(369	)
Valuation of derivatives, interest cost from labor obligations and other financial items, net	21		(16,225,841	)		(1,943,760	)		(10,176,316	)		(517	)
Equity interest in net result of associated companies			189,950			91,385			267			—
Profit before income tax			23,477,595			57,096,844			100,993,902			5,131
Income tax	13		11,398,856			24,941,511			46,477,079			2,361
Net profit for the year		Ps.	12,078,739		Ps.	32,155,333		Ps.	54,516,823		US$	2,770
Net profit for the year attributable to:
Equity holders of the parent		Ps.	8,649,427		Ps.	29,325,921		Ps.	52,566,197		US$	2,670
Non-controlling interests			3,429,312			2,829,412			1,950,626			100
		Ps.	12,078,739		Ps.	32,155,333		Ps.	54,516,823		US$	2,770
Basic and diluted earnings per share attributable to equity holders of the parent		Ps.	0.13		Ps.	0.44		Ps.	0.79		US$	0.04
Other comprehensive income (loss) items:
Net other comprehensive (loss) income that may be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities		Ps.	107,498,708		Ps.	(18,309,877	)	Ps.	(64,314,032	)	US$	(3,268	)
Effect of fair value of derivatives, net of deferred taxes			49,129			12,292			—			—
Items that will not be reclassified to (loss) or profit in subsequent years:
Re-measurement of defined benefit plan, net of deferred taxes			14,773,399			(7,046,089	)		757,278			38
Unrealized (loss) gain on equity investments at fair value, net of deferred taxes			(6,673,731	)		622,424			(3,765,688	)		(191	)
Total other comprehensive income (loss) items for the year, net of deferred taxes	20		115,647,505			(24,721,250	)		(67,322,442	)		(3,421	)
Total comprehensive income (loss) for the year		Ps.	127,726,244		Ps.	7,434,083		Ps.	(12,805,619	)	US$	(651	)
Comprehensive income (loss) for the year attributable to:
Equity holders of the parent		Ps.	120,974,842		Ps.	1,201,698		Ps.	(11,770,227	)	US$	(598	)
Non-controlling interests			6,751,402			6,232,385			(1,035,392	)		(53	)
		Ps.	127,726,244		Ps.	7,434,083		Ps.	(12,805,619	)	US$	(651	)

The accompanying notes are an integral part of these consolidated financial statements.

F-4

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Consolidated Statements of Changes in Shareholders’ Equity

For the year ended December 31, 2016, 2017 and 2018

(In thousands of Mexican pesos)

	Capital stock			Legal reserve		Retained earnings			Effect of derivative financial instruments acquired for hedging purposes			Unrealized gain (loss) on equity investment at fair value			Re-measurement of defined benefit plans			Cumulative translation adjustment			Total equity attributable to equity holders of the parent			Non- controlling interests			Total equity
Balance at December 31, 2015	Ps.	96,338,477		Ps.	358,440	Ps.	171,972,999		Ps.	(60,788)		Ps.	4,011		Ps.	(82,844,947)		Ps.	(73,490,197)		Ps.	112,277,995		Ps.	48,576,191		Ps.	160,854,186
Net profit for the year		—			—		8,649,427			—			—			—			—			8,649,427			3,429,312			12,078,739
Effect of fair value of derivatives, net of deferred taxes		—			—		—			48,496			—			—			—			48,496			633			49,129
Unrealized loss on equity investments at fair value, net of deferred taxes		—			—		—			—			(6,673,731	)		—			—			(6,673,731	)		—			(6,673,731	)
Remeasurement of defined benefit plan, net of deferred taxes		—			—		—			—			—			14,771,770			—			14,771,770			1,629			14,773,399
Effect of translation of foreign entities		—			—		—			—			—			—			104,178,880			104,178,880			3,319,828			107,498,708
Comprehensive income (loss) for the year		—			—		8,649,427			48,496			(6,673,731	)		14,771,770			104,178,880			120,974,842			6,751,402			127,726,244
Dividends declared		—			—		(18,339,294)			—			—			—			—			(18,339,294	)		(652,341	)		(18,991,635	)
Stock dividend (Note 19)		1,512			—		4,606,274			—			—			—			—			4,607,786			—			4,607,786
Repurchase of shares		(2,475	)		—		(7,213,397	)		—			—			—			—			(7,215,872	)		—			(7,215,872	)
Partial sale of shares of Telekom Austria (Note 12)		—			—		—			—			—			68,127			(1,139,192	)		(1,071,065	)		7,394,401			6,323,336
Other acquisitions of non-controlling interests (Note 12)		—			—		(2,319,149	)		—			—			—			—			(2,319,149	)		38,871			(2,280,278	)
Balance at December 31, 2016		96,337,514			358,440		157,356,860			(12,292	)		(6,669,720)			(68,005,050	)		29,549,491			208,915,243			62,108,524			271,023,767
Net profit for the year		—			—		29,325,921			—			—			—			—			29,325,921			2,829,412			32,155,333
Effect of fair value of derivatives, net of deferred taxes		—			—		—			12,292			—			—			—			12,292			—			12,292
Unrealized gain on equity investments at fair value, net of deferred taxes		—			—		—			—			622,424			—			—			622,424			—			622,424
Remeasurement of defined benefit plan, net of deferred taxes		—			—		—			—			—			(7,075,606	)		—			(7,075,606	)		29,517			(7,046,089	)
Effect of translation of foreign entities		—			—		—			—			—			—			(21,683,333	)		(21,683,333	)		3,373,456			(18,309,877	)
Comprehensive income (loss) for the year		—			—		29,325,921			12,292			622,424			(7,075,606	)		(21,683,333	)		1,201,698			6,232,385			7,434,083
Dividends declared		—			—		(19,815,470	)		—			—			—			—			(19,815,470	)		(1,848,108	)		(21,663,578	)
Stock dividend (Note 19)		1,264			—		4,902,818			—			—			—			—			4,904,082			—			4,904,082
Repurchase of shares		(270	)		—		(1,040,686	)		—			—			—			—			(1,040,956	)		—			(1,040,956	)
Other acquisitions of non-controlling interests (Note 12)		—			—		(285	)		—			—			—			—			(285	)		(23,596	)		(23,881	)
As of January 1 2018		96,338,508			358,440		170,729,158			—			(6,047,296	)		(75,080,656	)		7,866,158			194,164,312			66,469,205			260,633,517
Effect of adoption of new accounting standards (Note 2i)		—			—		19,598,349			—			—			—			—			19,598,349			518,440			20,116,789
As of January 1 2018 (restated)		96,338,508			358,440		190,327,507			—			(6,047,296	)		(75,080,656	)		7,866,158			213,762,661			66,987,645			280,750,306
Net profit for the year		—			—		52,566,197			—			—			—			—			52,566,197			1,950,626			54,516,823
Unrealized loss on equity investments at fair value, net of deferred taxes		—			—		—			—			(3,765,688	)		—			—			(3,765,688	)		—			(3,765,688	)
Remeasurement of defined benefit plan, net of deferred taxes		—			—		—			—			—			652,722			—			652,722			104,556			757,278
Effect of translation of foreign entities		—			—		—			—			—			—			(61,223,458	)		(61,223,458	)		(3,090,574	)		(64,314,032	)
Comprehensive income (loss) for the year		—			—		52,566,197						(3,765,688	)		652,722			(61,223,458	)		(11,770,227	)		(1,035,392	)		(12,805,619	)
Dividends declared		—			—		(21,134,520	)		—			—			—			—			(21,134,520	)		(1,850,462	)		(22,984,982	)
Hyperinflation adjustment (Note 2i)		—			—		15,826,934			—			—			—			—			15,826,934			—			15,826,934
Repurchase of shares		(130	)		—		(518,633	)		—			—			—			—			(518,763	)		—			(518,763	)
Redemption of hybrid bond (Note 19)		—			—		—			—			—			—			—			—			(13,440,120	)		(13,440,120	)
Other acquisitions of non-controlling interests		—			—		(170,440	)		—			—			—			—			(170,440	)		(784,894	)		(955,334	)
Balance at December 31, 2018	Ps.	96,338,378		Ps.	358,440	Ps.	236,897,045		Ps.	—		Ps.	(9,812,984	)	Ps.	(74,427,934	)	Ps.	(53,357,300	)	Ps.	195,995,645		Ps.	49,876,777		Ps.	245,872,422

The accompanying notes are an integral part of these consolidated financial statements.

F-5

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Consolidated Statements of Cash Flows

(In thousands of Mexican pesos)

			For the year ended December 31
	Note		2016			2017			2018			2018 Millions of U.S. dollars
Operating activities
Profit before income tax			Ps.	23,477,595		Ps.	57,096,844		Ps.	100,993,902		US$	5,131
Items not requiring the use of cash:
Depreciation		10		127,662,344			135,206,080			129,115,727			6,560
Amortization of intangible and other assets		9 and 11		20,863,577			24,968,862			26,596,853			1,351
Equity interest in net income of associated companies				(189,950	)		(91,385	)		(267	)		—
Loss on sale of property, plant and equipment				8,059			145,225			664,777			34
Net period cost of labor obligations		17		14,240,271			13,636,182			13,989,100			711
Foreign currency exchange loss, net				34,049,726			11,699,985			6,148,612			312
Interest income				(4,192,595	)		(2,925,648	)		(10,646,169	)		(541	)
Interest expense				33,862,012			30,300,781			31,771,433			1,614
Employee profit sharing				2,235,267			1,751,312			1,500,342			76
Loss (gain) in valuation of derivative financial instruments, capitalized interest expense and other, net				85,216			(19,010,851	)		(7,518,445	)		(382	)
Gain on net monetary positions		21		—			—			(4,429,145	)		(225	)
Working capital changes:
Subscribers, distributors, recoverable taxes, contract assets and other, net				(14,192,651	)		1,799,095			(15,420,291	)		(783	)
Prepaid expenses				792,979			4,588,584			3,264,685			166
Related parties				829,632			(558,651	)		38,426			2
Inventories				3,076,159			(2,991,009	)		(3,232,136	)		(164	)
Other assets				(2,944,581	)		(4,763,394	)		(6,081,740	)		(309	)
Employee benefits				(5,384,944	)		(14,692,218	)		(14,235,549	)		(723	)
Accounts payable and accrued liabilities				18,196,349			5,190,137			23,997,632			1,219
Employee profit sharing paid				(3,297,439	)		(1,471,946	)		(1,013,799	)		(52	)
Financial instruments and other				28,878,632			1,515,668			5,286,290			269
Deferred revenues				(972,376	)		(452,913	)		38,243			2
Interest received				3,239,845			819,940			1,215,800			62
Income taxes paid				(44,525,073	)		(23,988,305	)		(33,713,753	)		(1,713	)
Net cash flows provided by operating activities			Ps.	235,798,054		Ps.	217,772,375		Ps.	248,330,528		US$	12,617
Investing activities
Purchase of property, plant and equipment				(138,707,157	)		(119,185,137	)		(143,888,033	)		(7,310	)
Acquisition of intangibles				(16,316,738	)		(17,538,541	)		(7,933,647	)		(403	)
Dividends received		21		5,740,092			2,385,559			2,622,237			133
Proceeds from sale of plant, property and equipment				115,600			133,349			178,532			9
Acquisition of businesses, net of cash acquired				(1,823,813	)		(6,878,793	)		(310,604	)		(16	)
Partial sale of shares of associated company				—			340,040			548,484			28
Investments in associate companies				(3,487	)		—			—			—
Net cash flows used in investing activities			Ps.	(150,995,503	)	Ps.	(140,743,523	)	Ps.	(148,783,031	)	US$	(7,559	)
Financing activities
Loans obtained				64,281,631			143,607,726			155,263,221			7,888
Repayment of loans				(125,672,444	)		(171,041,215	)		(189,314,144	)		(9,618	)
Interest paid				(32,125,872	)		(31,196,441	)		(30,869,017	)		(1,568	)
Repurchase of shares				(7,021,247	)		(1,233,371	)		(511,421	)		(26	)
Dividends paid				(13,809,957	)		(16,091,390	)		(22,369,793	)		(1,137	)
Derivative financial instruments				(351,213	)		(71,474	)		—			—
Partial sale of shares in subsidiary				6,323,336			—			—			—
Redemption of hybrid bond				—			—			(13,440,120	)		(683	)
Acquisition of non-controlling interests				(2,280,278	)		(11,930	)		(115,821	)		(6	)
Net cash flows used in financing activities			Ps.	(110,656,044	)	Ps.	(76,038,095	)	Ps.	(101,357,095	)	US$	(5,150	)
Net (decrease) increase in cash and cash equivalents			Ps.	(25,853,493	)	Ps.	990,757		Ps.	(1,809,598	)	US $	(92	)
Adjustment to cash flows due to exchange rate fluctuations, net				3,911,844			61,333			(800,913	)		(41	)
Cash and cash equivalents at beginning of the year				45,160,032			23,218,383			24,270,473			1,233
Cash and cash equivalents at end of the year			Ps.	23,218,383		Ps.	24,270,473		Ps.	21,659,962		US$	1,100
Non-cash transactions related to:
Acquisitions of property, plant and equipment in accounts payable at end year			Ps.	13,497,804		Ps.	18,869,210		Ps.	19,099,066		US$	970
Redemption of exchangeable bond				—			—			16,446,262			836
Non-cash transactions			Ps.	13,497,804		Ps.	18,869,210		Ps.	35,545,328		US$	1,806

The accompanying notes are an integral part of these consolidated financial statements.

F-6

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Notes to Consolidated Financial Statements

Years ended December 31, 2016, 2017 and 2018

(In thousands of Mexican pesos [Ps.] and thousands of

U.S. dollars [US$], unless otherwise indicated)

1. Description of the Business and Relevant Events

I. Corporate Information

América Móvil, S.A.B. de C.V. and subsidiaries (hereinafter, the “Company”, “América Móvil” or “AMX”) was incorporated under laws of Mexico on September 25, 2000. The Company provides telecommunications services in 25 countries throughout Latin America, the United States, the Caribbean and Europe. These telecommunications services include mobile and fixed-line voice services, wireless and fixed data services, internet access and Pay TV, over the top and other related services. The Company also sells equipment, accessories and computers.

• Voice services provided by the Company, both wireless and fixed, mainly include the following: airtime, local, domestic and international long-distance services, and network interconnection services.

• Data services include value added, corporate networks, data and Internet services.

• Pay TV represents basic services, as well as pay per view and additional programming and advertising services.

• AMX provides other related services to advertising in telephone directories, publishing and call center services.

• The Company also provides video, audio and other media content that is delivered through the internet directly from the content provider to the end user.

In order to provide these services, América Móvil has licenses, permits and concessions (collectively referred to herein as “licenses”) to build, install, operate and exploit public and/or private telecommunications networks and provide miscellaneous telecommunications services (mostly mobile and fixed voice and data services) and to operate frequency bands in the radio-electric spectrum for point-to-point and point-to-multipoint microwave links. The Company holds licenses in the 24 countries where it has networks, and such licenses have different dates of expiration through 2056.

Certain licenses require the payment to the respective governments of a share in sales determined as a percentage of revenues from services under concession. The percentage is set as either a fixed rate or in some cases based on certain size of the infrastructure in operation.

The corporate offices of América Móvil are located in Mexico City, Mexico, at Lago Zurich 245, Colonia Ampliación Granada, Delegación Miguel Hidalgo, 11529, Mexico City, Mexico.

The accompanying consolidated financial statements were approved for their issuance by the Company’s Chief Financial Officer on April 9, 2019, and subsequent events have been considered through that date.

2. Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices

a) Basis of preparation

The accompanying consolidated financial statements have been prepared in conformity with International Financial Reporting Standards, as issued by the International Accounting Standards Board (“IASB”) (hereafter referred to as IFRS).

F-7

The consolidated financial statements have been prepared on the historical cost basis, except for the derivative financial instruments, the trust assets of post-employment and other employee benefit plans and the investments in equity at fair value through OCI which are presented at their market value.

Effectively July 1, 2018, the Argentinian economy is considered to be hyperinflationary in accordance with the criteria in IAS 29 “Financial Reporting in Hyperinflationary Economies” (“IAS 29”). Accordingly, for the Argentina subsidiaries, we have included, adjustments for hyperinflation and reclassifications as is required by the standard for purposes of presentation of IFRS in the consolidated financial statements.

The preparation of these consolidated financial statements under IFRS requires the use of critical estimates and assumptions that affect the amounts reported for certain assets, liabilities, income and expenses. It also requires that management exercise judgment in the application of the Company’s accounting policies. Actual results could differ from these estimates and assumptions.

The Mexican peso is the functional currency of the Company’s Mexican operations and the consolidated reporting currency of the Company.

i) Changes in Accounting Policies and Disclosures

The Company applied IFRS 15 “Revenue from Contracts with Customers” (IFRS 15) and IFRS 9 “Financial Instruments” (IFRS 9) for the first time effective January 1, 2018. The nature and effect of the changes as a result of adoption of these new accounting standards are described below.

The accounting policies applied in the preparation of the consolidated financial statements for the year ended December 31, 2018 are consistent with those used in the preparation of the Company´s consolidated annual financial statements for the years ended December 31, 2017 and 2016, with the exception of the following new standards and amendments to existing standards issued by the IASB, which were mandatory for annual periods beginning on or after January 1, 2018:

a) IFRS 15 Revenue from contract with customer

In May 2014, the IASB issued the new standard IFRS 15. The new standard for revenue recognition aims at standardizing the multitude of regulations previously included in various standards, and may require more judgment and estimates than with the revenue recognition processes that were required under the previously existing revenue recognition standards

IFRS 15 supersedes IAS 11 Construction Contracts, IAS 18 Revenue and related Interpretations and it applies, with limited exceptions, to all revenue arising from contracts with customers. IFRS 15 establishes a five-step model to account for revenue arising from contracts with customers and requires that revenue be recognized at an amount that reflects the consideration to which an entity expects to be entitled in exchange for transferring goods or services to a customer.

IFRS 15 requires entities to exercise judgment, taking into consideration all of the relevant facts and circumstances when applying each step of the model to contracts with their customers. The standard also specifies the accounting for the incremental costs of obtaining a contract and the costs directly related to fulfilling a contract. In addition, the standard requires relevant disclosures.

The Company adopted IFRS 15 using the modified retrospective method of adoption with the date of initial application on January 1, 2018. Under this method, the standard can be applied either to all contracts at the date of initial application or only to contracts that are not completed at this date. The Company elected to apply the standard to all contracts as of January 1, 2018.

F-8

The cumulative effect of initially applying IFRS 15 was recognized at the date of initial application as an adjustment to the opening balance of retained earnings. Therefore, the comparative information was not restated and continues to be reported under IAS 11, IAS 18 and related Interpretations. The most significant changes in the implementation of IFRS 15 are the earlier recognition of revenue from the sale of goods, and the capitalization and deferral of the incremental contracts acquisition costs over the expected period of benefit.

The effect of adopting IFRS 15 as of January 1, 2018 was, as follows:

	Reference		Increase
Assets:
Subscribers, distributors, recoverable taxes, contract assets and other, net		(a), (b), (c)	Ps.	31,261,436
Liabilities:
Current liabilities		(c)	Ps.	562,651
Deferred income taxes		(d)		8,725,841
			Ps.	9,288,492
Equity:
Retained earnings		(a), (b), (c), (d)		21,454,504
Non-controlling interests				518,440
Total equity				21,972,944
Total liabilities and equity			Ps.	31,261,436

Set out below are, the impacts of adopting IFRS 15 on the Company´s consolidated financial statements for the year ended December 31, 2018:

	Reference		As reported			Figures without adoption of IFRS 15			Adjustments
Operating revenues:
Revenues services		(a), (b)	Ps.	863,647,642		Ps.	881,530,167		Ps.	(17,882,525	)
Sales of equipment		(a), (b)		174,560,039			158,721,765			15,838,274
				1,038,207,681			1,040,251,932			(2,044,251	)
Operating costs and expenses:
Cost of sales and services			Ps.	508,822,430		Ps.	509,100,174		Ps.	(277,744	)
Commercial, administrative and general and other expenses		(c)		234,115,500			240,010,631			(5,895,131	)
Depreciation and amortization				155,712,580			155,712,580			—
				898,650,510			904,823,385			(6,172,875	)
				139,557,171			135,428,547			4,128,624
Financial items, net				38,563,536			38,356,359			207,177
Equity interest in net result of associated companies				267			267			—
Income tax		(d)		46,477,079			45,496,698			980,381
Non-controlling interests				(1,950,626	)		(1,950,626	)		—
Net profit for the year			Ps.	52,566,197		Ps.	49,625,131		Ps.	2,941,066

F-9

	Reference		As reported		Balances without adoption of IFRS 15		Adjustments
Assets:
Current assets:
Cash and cash equivalents and equity investments at fair value			Ps.	70,675,896	Ps.	70,675,896	Ps.	—
Subscribers, distributors, recoverable taxes, contract assets and other, net		(a), (b), (c)		216,226,920		185,303,634		30,923,286
Other current assets, net				62,152,708		62,152,708		—
Total current assets				349,055,524		318,132,238		30,923,286
Non-current assets:
Property, plant and equipment, net				640,000,720		640,000,720		—
Intangibles and other assets, net				424,485,276		424,485,276		—
Subscribers, distributors, recoverable taxes, contract assets and other, net		(a), (b), (c)		15,681,872		10,244,609		5,437,263
Total assets			Ps.	1,429,223,392	Ps.	1,392,862,843	Ps.	36,360,549
Liabilities and equity:
Current liabilities:
Short-term debt and current portion of long-term debt			Ps.	96,230,634	Ps.	96,230,634	Ps.	—
Accounts payable and other liabilities				338,116,412		337,448,940		667,472
Deferred revenues				32,743,843		32,315,690		428,153
Total current liabilities				467,090,889		465,995,264		1,095,625
Non-current-liabilities:
Long-term debt				542,691,819		542,691,819		—
Deferred income taxes		(d)		24,573,441		15,382,500		9,190,941
Other liabilities				148,994,821		148,994,821		—
Total liabilities				1,183,350,970		1,173,064,404		10,286,566
Total equity		(d)		245,872,422		219,798,439		26,073,983
Total liabilities and equity			Ps.	1,429,223,392	Ps.	1,392,862,843	Ps.	36,360,549

IFRS 15 Revenues from contracts with customers

IFRS 15 establishes a comprehensive framework for determining when to recognize revenue and how much revenue to recognize. The principle core is that an entity should recognize revenue to depict the transfer of promised goods or services to the customer in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The most significant changes in the implementation of IFRS 15 are as follows:

a. The Company provides fixed and mobile services. These services are offered independently in contracts with customers or together with the sale of handsets (mobile) under the postpaid model. In accordance with IFRS 15, the transaction price should be assigned to the different performance obligations based on their relative standalone selling price.

The Company concluded that regarding the provided services, it has market observable information, to determine the standalone selling price of the services. On the other hand, in the case of the sale of bundled mobile phones sold (including service and handset) by the Company, the allocation of the sales is done

F-10

based on their relative standalone selling price of each individual component related to the total bundled price. The result is that more equipment revenue is recognized at the moment of a sale and, therefore, less service revenue from the monthly fee are being recognized under the new standard.

The Company concluded as well that the provided services are satisfied over the time of the contract period, given that the customer simultaneously receives and consumes the benefits provided by the Company.

Such service bundles, voice and data, accomplish the criteria mentioned in IFRS 15 of being substantially similar and of having the same transfer pattern which is why the Company concluded that the revenue from these different services offered to its customers are considered as a single performance obligation with revenue being recognized over time, except for sales of equipment.

b. Under IFRS 15, for those contracts with customers in which generally the sale of equipment and other electronic equipment is a single performance obligation, the Company recognizes the revenue at the moment when it transfers control to the customer which generally occurs when such goods are delivered. The latter is consistent with the previous accounting policy.

c. The Company pays commissions to its distributors for obtaining new customers; such commissions were expensed as incurred under the previous accounting. Under IFRS 15, commissions are considered incremental contract acquisition costs that are capitalized and are amortized over the expected period of benefit, during the average duration of customer contracts.

d. In addition to the adjustments described above, other items such as deferred taxes and non-controlling interests were adjusted to retained earnings as necessary upon adoption of IFRS 15 as of January 1, 2018.

b) IFRS 9, Financial Instruments

IFRS 9 was issued in July 2014 and replaced IAS 39 Financial Instruments and relates to the classification and measurement of financial instruments, impairment; and hedge accounting.

The Company applied IFRS 9 prospectively, with an initial application date of January 1, 2018. The Company has not restated the comparative information, which continues to be reported under IAS 39.

The effect of adopting IFRS 9 as of January 1, 2018 was, as follows:

	Adjustments		January 1, 2018
Assets
Trade receivables		(a)	Ps.	(2,400,783	)
Deferred tax assets		(b)		544,628
Total assets			Ps.	(1,856,155	)
Equity
Retained earnings		(a), (b)	Ps.	(1,856,155	)
Total adjustment on equity			Ps.	(1,856,155	)

IFRS 9 sets out the requirements for recognizing and measuring financial assets and financial liabilities. This new standard includes:

a) Impairment

The adoption of IFRS 9 has fundamentally changed the Company´s accounting for impairment losses for financial assets by replacing IAS 39’s incurred loss approach with a forward-looking expected credit loss approach. IFRS 9 requires the Company to recognize an allowance for expected credit loss for all debt instruments not held at fair value through profit or loss and contract assets.

F-11

Upon adoption of IFRS 9 the Company recognized an impairment on the Company´s trade receivables at fair value Ps 2,400,783 as of January 1, 2018, which resulted in a decrease in Retained earnings. There were no impairment losses that impacted the carrying amount of debt instruments at fair value through OCI in the statements of financial position, which remains at fair value.

b) Other adjustments

In addition to the adjustments described above, other items such as deferred taxes and non-controlling interests were adjusted to retained earnings as necessary upon adoption of IFRS 9 as of January 1, 2018.

The new requirements of IFRS 9 regarding hedge accounting do not have an effect on the consolidated financial statements as hedge accounting is not applied. The Company continues to consider the hedges to be under IAS 39 as allowed by IFRS 9.

Compared to IAS 39, the application of IFRS 9 had an immaterial effect on the consolidated financial statements in 2018, including classification of financial assets and liabilities.

c) Impact of the application for hyperinflation in Argentina

In the recent years, the Argentina economy has shown high rates of inflation. Although inflation data has not been consistent in recent years and several indexes have coexisted, inflation in Argentina indicates that the three-year cumulative inflation rate recently exceeded 100%, which is the quantitative reference established by IAS 29. As a result, Argentina is considered a hyperinflationary economy in 2018 and the Company applies hyper-inflation accounting to its subsidiary whose functional currency is the Argentine peso for financial information for periods ending on or after July 1, 2018, however the calculation of the accumulative impact was measured as of January 1, 2019.

In order to restate for hyperinflation its financial statements, the subsidiary used the series of indices defined by resolution JG No. 539/18 issued by the “Federación Argentina de Consejos Profesionales de Ciencias Económicas” (FACPCE), based on the National Consumer Price Index (IPC) published by the Instituto Nacional de Estadística y Censos (INDEC) of the Argentine Republic and the Wholesale Internal Price Index (IPIM) published by FACPCE. The cumulative index December 31, 2018 is 184.255, while on an annual inflation for 2018 is 48%.

The main implications are as follows:

• Adjustment of the historical cost of non-monetary assets and liabilities and equity items from their date of acquisition, or the date of inclusion in the consolidated statements of financial position, to the end of the year, in order to reflect changes in the currency’s purchasing power caused by inflation.

• The gain on the net monetary position caused by the impact of inflation in the year is included in the consolidated statements of comprehensive income as part of the caption “Valuation of derivatives, interest cost from labor obligations and other financial items, net. Items in the income statements and in the statements of cash flows are adjusted by the inflation index since their origination, with a balancing entry, and a reconciling item in the statements of cash flows, respectively.

• All items in the financial statements of the Argentine company are translated at the closing exchange rate, which at December 31, 2018 was 0.5221 argentine pesos per mexican peso.

• Financial information for financial years prior to 2018 are not restated.

F-12

The main impact in the consolidated financial statements of the Company in 2018 of applying hyperinflationary accounting under IAS 29 are shown below:

	Impact of the application of hyperinflation adjustments in 2018
Impact in:
Operating revenues		Ps. 6,286,140
Operating loss		(1,423,252	)
Financial loss		(1,289,317	)
Gain on net monetary positions		4,429,145
Income tax		(770,928	)
Net profit for the year		945,647
Current assets		1,866,674
Non-current assets		19,796,073
Total liabilities		4,890,166
Total equity (i)		16,772,581

(i) This total includes the initial effect of hyperinflation of Ps. 15,826,934 and the net effect on results due to the hyperinflation of the year of Ps. 945,647.

ii) Basis of consolidation

The consolidated financial statements include the accounts of América Móvil, S.A.B. de C.V. and those subsidiaries over which the Company exercises control. The consolidated financial statements for the subsidiaries were prepared for the same period as the Company´s and applying consistent accounting policies. All of the subsidiary companies operate in the telecommunications sector or related.

Subsidiaries are entities over which the Company has control. Control is achieved when the Company has power over the investee, when it is exposed to, or has rights to, variable returns from its involvement with the investee, and has the ability to use its power over the investee to affect the amount of the investor’s returns. Subsidiaries are consolidated on a line by line basis from the date which control is achieved by the Company. The Company reassesses whether or not it controls an investee if facts and circumstances indicate that there are changes to one or more of the elements of control.

Changes in the Company’s ownership interests in a subsidiary that do not result in the Company losing control over the subsidiary are accounted for as equity transactions. The carrying amounts of the equity attributable to owners of the parent and non-controlling interests are adjusted to reflect the changes in their relative interests in the subsidiary. Any difference between the carrying amount of the non-controlling interests and the fair value of the consideration paid or received in the transaction is recognized directly in the equity attributable to the owners.

Subsidiaries are deconsolidated from the date which control ceases. When the Company ceases to have control over a subsidiary, it derecognizes the assets (including any goodwill) and liabilities of the subsidiary at their carrying amounts, derecognizes the carrying amount of non-controlling interests in the former subsidiary and recognizes the fair value of any consideration received from the transaction. Any retained interest in the former subsidiary is then remeasured to its fair value.

All intra-Company balances and transactions, and any unrealized gains and losses arising from intra-Company transactions, are eliminated in preparing the consolidated financial statements.

Non-controlling interests represent the portion of profits or losses and net assets not held by the Company. Non-controlling interests are presented separately in the consolidated statements of comprehensive income and in equity in the consolidated statements of financial position separately from Company’s own equity.

F-13

Associates:

An associate is an entity over which the Company has significant influence. Significant influence is the power to participate in the financial and operating policy decisions of the investee but does not have control or joint control over those decisions.

The Company’s investment in associates includes goodwill identified on acquisition, net of any accumulated impairment losses.

The investments in associated companies in which the Company exercises significant influence are accounted for using the equity method, whereby Company recognizes its share in the net profit (losses) and equity of the associate.

The results of operations of the subsidiaries and associates are included in the Company’s consolidated financial statements beginning as of the month following their acquisition and its share of other comprehensive income after acquisition is recognized directly in other comprehensive income.

The Company assesses at each reporting date whether there is objective evidence that investment in associates is impaired. If so, the Company calculates the amount of impairment as the difference between the recoverable amount of the associate and its carrying value.

The equity interest in the most significant subsidiaries at December 31, 2017 and 2018 is as follows:

Company name	Country		Equity interest at December 31
			2017			2018
Subsidiaries:
América Móvil B.V. a)		Netherlands		100.0	%		100.0	%
Compañía Dominicana de Teléfonos, S.A. (“Codetel”) b)		Dominican Republic		100.0	%		100.0	%
Sercotel, S.A. de C.V. a)		Mexico		100.0	%		100.0	%
Radiomóvil Dipsa, S.A. de C.V. and subsidiaries (“Telcel”) b)		Mexico		100.0	%		100.0	%
Puerto Rico Telephone Company, Inc. b)		Puerto Rico		100.0	%		100.0	%
Servicios de Comunicaciones de Honduras, S.A. de C.V. (“Sercom Honduras”) b)		Honduras		100.0	%		100.0	%
TracFone Wireless, Inc. (“TracFone”) b)		USA		100.0	%		100.0	%
Claro S.A. (Claro Brasil) b)		Brazil		97.7	%		98.2	%
Telecomunicaciones de Guatemala, S.A. (“Telgua”) b)		Guatemala		99.3	%		99.3	%
Empresa Nicaragüense de Telecomunicaciones, S.A. (“Enitel”) b)		Nicaragua		99.6	%		99.6	%
Compañía de Telecomunicaciones de El Salvador, S.A. de C.V. (“CTE”) b)		El Salvador		95.8	%		95.8	%
Comunicación Celular, S.A. (“Comcel”) b)		Colombia		99.4	%		99.4	%
Telmex Colombia, S.A. b)		Colombia		99.3	%		99.3	%
Consorcio Ecuatoriano de Telecomunicaciones, S.A. (“Conecel”) b)		Ecuador		100.0	%		100.0	%
AMX Argentina, S.A. b)		Argentina		100.0	%		100.0	%
AMX Paraguay, S.A. b)		Paraguay		100.0	%		100.0	%
AM Wireless Uruguay, S.A. b)		Uruguay		100.0	%		100.0	%
Claro Chile, S.A. b)		Chile		100.0	%		100.0	%
América Móvil Perú, S.A.C b)		Peru		100.0	%		100.0	%
Claro Panamá, S.A. b)		Panamá		100.0	%		100.0	%
Teléfonos de México, S.A.B. de C.V. b)		Mexico		98.8	%		98.8	%
Telekom Austria AG b)		Austria		51.0	%		51.0	%

F-14

a) Holding companies

b) Operating companies of mobile and fixed services

iii) Basis of translation of financial statements of foreign subsidiaries and associated companies

The operating revenues of foreign subsidiaries jointly represent approximately 72%, 74% and 73% of consolidated operating revenues of 2016, 2017 and 2018, respectively, and their total assets jointly represent approximately 81% and 80% of consolidated total assets at December 31, 2017 and 2018, respectively.

The financial statements of foreign subsidiaries have been prepared under or translated to IFRS in the respective local currency (which is their functional currency) and then translated into the Company´s reporting currency as follows:

• all monetary assets and liabilities were translated at the closing exchange rate of the period;

• all non-monetary assets and liabilities at the closing exchange rate of the period;

• equity accounts are translated at the exchange rate at the time the capital contributions were made and the profits were generated;

• revenues, costs and expenses are translated at the average exchange rate of the period, except for the operations of the subsidiaries in Argentina; whose economy is considered hyperinflationary since 2018;

• the resulting difference from the translation process is recognized in equity in the caption Cumulative translation adjustment;

• the consolidated statements of cash flows presented using the indirect method were translated using the weighted-average exchange rate for the applicable period (except for Argentina), and the resulting difference is shown in the consolidated statements of cash flows under the heading “Adjustment to cash flows due to exchange rate fluctuations, net”.

The basis of translation for the operations of the subsidiaries in Argentina are described in Note 2i, c)

The difference resulting from the translation process is recognized in equity in the caption “Effect of translation of foreign entities”. At December 31, 2017 and 2018, the cumulative translation adjustment was Ps. 7,866,158 and Ps. (53,357,300), respectively.

b) Revenue recognition

The Company revenues are derived principally from providing the following telecommunications services and products: wireless voice, wireless data and value-added services, fixed voice, fixed data, broadband and IT services, Pay TV and over-the-top (“OTT”) services.

The wireless voices services are offered under a variety of plans. In addition, the Company often bundle wireless data telecommunications services together with voices services. Monthly rent in post- paid is billed based on the associated plan o package rates, corresponding to when the services are provided.

As part the wireless data services, the Company offer value-added services that include Internet access, messaging and other wireless entertainment and corporative services, Revenue from such services are recognized at the time they are provided, on the date the installation or when the services are downloaded. In addition, the Company offer other wireless services, including wireless security services, mobile payments solutions, machine-to-machine services, mobile banking, virtual private network (“VPN”) services, video calls and Personal Communication Services (“PCS”).

F-15

The fixed voices services include local, domestic and international long-distance and public telephone services, under a variety of plans, specifically tailored to our residential and corporate clients. Revenue from the local services are derived from the monthly rent for services and the long-distances revenues are recognized at the time the service is provided.

The Company offer data services, including data centers, data administration and hosting services to our residential and corporate clients under a variety of plans. These revenues are recognized at the time the service is provided.

The residential broadband access are typically bundled with voice services and are competitively priced as a function of the desired or available speed. As a complement to these services, the Company offer a number of products such as home networking and smart home services. In addition, The Company provide different IT solutions for small business and large corporations.

The Company offer Pay TV through cable and satellite TV subscriptions to both retail and corporate customers under a variety of plans. These services are offered through individual subscription plans as well as in bundled packages of services, along with broadband, fixed voice and wireless services. In addition, the Company sell video, audio and other media content that is delivered through the internet directly from the content provider to the viewer or end user. These revenues are recognized at the time the service is provided.

The Company sells to its customers bundles of different services (fixed line, mobile, broadband internet, streaming and pay TV, among others) which elements are evaluated to determine if it is necessary to separate the different identifiable components and apply the income recognition policy corresponding to each element.

Total package revenue is allocated among the identified elements based on their respective standalone selling prices.

Determining standalone selling prices for each identified element requires estimates that are complex due to the nature of the business. A change in estimates of standalone selling prices could affect the apportionment of revenue among the elements and, as a result, the timing of recognition of revenues.

Transaction prices are allocated to the performance obligations by reference to the relative stand-alone selling prices of the products and services. The stand-alone selling prices of products are based on the market prices whereas the standalone selling prices of services are available separately, as services are also offered on a stand-alone basis, i.e. without hardware.

Some subsidiaries have loyalty programs where the Company awards credits customer credit awards referred as “points”. The customer can redeem accrued “points” for awards such as devices, accessories or airtime. The Company provides all awards. The consideration allocated to the award credits is identified as a separate performance obligation; the corresponding liability of the award credits is measured at its fair value. The consideration allocated to award credits amount is recognized as a contract liability until the points are redeemed. Revenue is recognized upon redemption of products by the customer.

c) Cost of sales

The cost of mobile equipment and computers is recognized at the time the client and distributor receives the device that is when the control is are transferred to the customer.

d) Cost of services

The cost of services represents the costs incurred to properly deliver the services to the customers, it includes the network operating costs and licenses related costs and is accounted at the moment in which such services are provided.

F-16

e) Commissions to distributors

The Company pays commissions to its distributors different than those that acquire customers. Such commissions are recognized in “commercial, administrative and general expenses” in the consolidated statements of comprehensive income at the time in which the distributor either reports an activation or reaches certain number of lines activated or obtained at a certain point of time.

f) Cash and cash equivalents

Cash and cash equivalents represent bank deposits and liquid investments with maturities of less than three months. These amounts are stated at cost plus accrued interest, which is similar to their market value.

The Company also maintains restricted cash held as collateral to meet certain contractual obligations. Restricted cash is presented as part of “Other assets” within other non-current financial assets given that the restrictions are long-term in nature (See Note 9).

g) Equity investments at fair value through OCI and other short-term investments

Equity investments at fair value through OCI and other short-term investments are primarily composed of equity investments and other short-term financial investments. Amounts are initially recorded at their estimated fair value. Fair value adjustments for equity investments are recorded through other comprehensive income, while fair value adjustments for other short-term investments are recorded in the Consolidated Statements of Comprehensive Income as they occur.

h) Inventories

Inventories are initially recognized at historical cost and are valued using the average cost method without exceeding their net realizable value.

The estimate of the realizable value of inventories on-hand is based on their age and turnover.

i) Business combinations and goodwill

Business combinations are accounted for using the acquisition method, which in accordance with IFRS 3, “Business acquisitions”, consists in general terms as follows:

(i) Identify the acquirer

(ii) Determine the acquisition date

(iii) Value the acquired identifiable assets and assumed liabilities

(iv) Recognize the goodwill or a bargain purchase gain

For acquired subsidiaries, goodwill represents the difference between the purchase price and the fair value of the net assets acquired at the acquisition date. The investment in acquired associates includes goodwill identified on acquisition, net of any impairment loss.

Goodwill is reviewed annually to determine its recoverability or more often if circumstances indicate that the carrying value of the goodwill might not be fully recoverable.

The possible loss of value in goodwill is determined by analyzing the recovery value of the cash generating unit (or the group thereof) to which the goodwill is associated at the time it was originated. If this recoverable amount is lower than the carrying value, an impairment loss is charged to the results of operations. The recoverable amount is determined based on the higher of fair value less cost of disposal or value in use.

F-17

For the years ended December 31, 2016, 2017 and 2018, no impairment losses were recognized for the goodwill shown in the Company’s consolidated statements of financial position.

j) Property, plant and equipment

i) Property, plant and equipment are recorded at acquisition cost, net of accumulated depreciation. Depreciation is computed on the cost of the assets using the straight line method, based on the estimated useful lives of the related assets, beginning the month after they become available for use.

Borrowing costs that are incurred for general financing for construction in progress for periods exceeding six months are capitalized as part of the cost of the asset. During 2016, 2017 and 2018 the borrowing costs that were capitalized amounted to Ps. 2,861,307, Ps. 2,875,034 and Ps. 2,020,288 respectively.

In addition to the purchase price and costs directly attributable to preparing an asset in terms of its physical location and condition for operating as intended by management, when required, the cost also includes the estimated costs of dismantling and removal of the asset and for restoration of the site where it is located (See Note 15c).

ii) The net book value of property, plant and equipment is removed from the consolidated statements of financial position at the time the asset is sold or when no future economic benefits are expected from its use or sale. Any gains or losses on the sale of property, plant and equipment represent the difference between net proceeds of the sale and the net book value of the item at the time of sale. These gains or losses are recognized as either other operating income or other operating expenses upon sale.

iii) The Company periodically assesses the residual values, useful lives and depreciation methods associated with its property, plant and equipment. If necessary, the effects of any changes in accounting estimates is recognized prospectively, at the closing of each period, in accordance with IAS 8, “Accounting Policies, Changes in Accounting Estimates and Errors”.

For property, plant and equipment made up of several components with different useful lives, the major individual components are depreciated over their individual useful lives. Maintenance costs and repairs are expensed as incurred.

Annual depreciation rates are as follows:

Network infrastructure	5	%-33%
Buildings and leasehold improvement	2	%-33%
Other assets	10	%-50%

iv) The carrying value of property, plant and equipment is reviewed if there are indicators of impairment in such assets. If an asset’s recovery value is less than the asset’s net carrying value, the difference is recognized as an impairment loss.

During the years ended December 31, 2016, 2017 and 2018, no impairment losses were recognized.

v) Spare parts for network operation is valued using the average cost method, without exceeding its net realizable value.

The valuation of inventory for network considered obsolete, defective or slow-moving, is reduced to their estimated net realizable value. The estimate of the recovery value of inventories is based on their age and turnover.

F-18

k) Intangibles

i) Licenses

Licenses to operate wireless telecommunications networks granted by the governments of the countries in which the Company operates are recorded at acquisition cost or at fair value at their acquisition date, net of accumulated amortization. Certain licenses require payments to the governments, such payments are recognized in the cost of service and equipment.

The licenses that in accordance with government requirements are categorized as automatically renewable, for a nominal cost and with substantially consistent terms, are considered by the Company as intangible assets with an indefinite useful life. Accordingly, they are not amortized. Licenses are amortized when the Company does not have a basis to conclude that they are indefinite lived. Licenses are amortized using the straight-line method over a period ranging from 3 to 30 years, which represents the usage period of the assets.

The Company has conducted an internal analysis on the applicability of the International Financial Reporting Interpretation Committee (“IFRIC”) No. 12 (Service Concession Agreements) and has concluded that its concessions are outside the scope of IFRIC 12. To determine the applicability of IFRIC 12, the Company analyzes each concession or group of similar concessions in a given jurisdiction. As a threshold matter, the Company identifies those government concessions that provide for the development, financing, operation or maintenance of infrastructure used to render a public service, and that set out performance standards, mechanisms for adjusting prices and arrangements for arbitrating disputes.

With respect to those services, the Company evaluates whether the grantor controls or regulates (i) what services the operator must provide, (ii) to whom it must provide them and (iii) the applicable price (the “Services Criterion”). In evaluating whether the applicable government, as grantor, controls the price at which the Company provides its services, the Company looks at the terms of the concession agreement according to all applicable regulations. If the Company determines that the concession under analysis meets the Services Criterion, then the Company evaluates whether the grantor would hold a significant residual interest in the concession’s infrastructure at the end of the term of the arrangement.

ii) Trademarks

Trademarks are recorded at their fair value at the valuation date when acquired. The useful lives of trademarks are assessed as either definite or indefinite. Trademarks with finite useful lives are amortized using the straight-line method over a period ranging from 1 to 10 years. Trademarks with indefinite useful lives are not amortized, but are tested for impairment annually at the cash generating unit level. The assessment of indefinite life is reviewed annually to determine whether the indefinite life continues to be supportable, if not, the change in useful life from indefinite to definite is made on a prospective basis.

iii) Irrevocable rights of use

Irrevocable rights of use are recognized according to the amount paid for the right and are amortized over the period in which they are granted.

The carrying values of the Company’s licenses and trademarks are reviewed annually and whenever there are indicators of impairment in the value of such assets. When an asset’s recoverable amount, which is the higher of the asset’s fair value, less disposal costs and its value in use (the present value of future cash flows), is less than the asset’s carrying value, the difference is recognized as an impairment loss.

iv) Customer relationships

The value of customer relations is determined and valued at the time that a new subsidiary is acquired, as determined by the Company with the assistance of independent appraisers, and is amortized on a 5 year period.

F-19

During the years ended December 31, 2016, 2017 and 2018, no impairment losses were recognized for licenses, trademarks, irrevocable rights of use or customer relationships.

l) Impairment in the value of long-lived assets

The Company assesses the existence of indicators of impairment in the carrying value of long-lived assets, investments in associates, goodwill and intangible assets according to IAS 36 “Impairment of assets”. When there are such indicators, or in the case of assets whose nature requires an annual impairment analysis (goodwill and intangible assets with indefinite useful lives), the Company estimates the recoverable amount of the asset, which is the higher of its fair value, less disposal costs, and its value in use. Value in use is determined by discounting estimated future cash flows, applying a pre-tax discount rate that reflects the time value of money and taking into consideration the specific risks associated with the asset. When the recoverable amount of an asset is below its carrying value, impairment is considered to exist. In this case, the carrying value of the asset is reduced to the asset’s recoverable amount, recognizing the loss in results of operations for the respective period. Depreciation and/or amortization expense of future periods is adjusted based on the new carrying value determined for the asset over the asset’s remaining useful life. Impairment is computed individually for each asset. Recoverable amount is determined for an individual asset, unless the asset does not generate cash inflows that are largely independent of those from other assets or group of assets.

In the estimation of impairments, the Company uses the strategic plans established for the separate cash-generating units to which the assets are assigned. Such strategic plans generally cover a period from 3 to 5 years. For longer periods, beginning in the fifth year, projections are based on such strategic plans while applying a constant or declining expected perpetual growth rate.

Key assumptions used in value in use calculations

The forecasts are made in real terms (net of inflation) and in the functional currency of the subsidiary as of December 31, 2018. Financial forecasts, premises and assumptions are similar to what any other market participant in similar conditions would consider.

Local synergies, that any other market participant would not have taken into consideration to prepare similar forecasted financial information, have not been included.

The assumptions used to develop the financial forecasts were validated for each of the cash generating units (“CGUs”), typically identified by country and by service (in the case of Mexico) taking into consideration the following:

• Current subscribers and expected growth.

• Type of subscribers (prepaid, postpaid, fixed line, multiple services)

• Market environment and penetration expectations

• New products and services

• Economic environment of each country

• Expenses for maintaining the current assets

• Investments in technology for expanding the current assets

• Market consolidation and synergies

The foregoing forecasts could differ from the results obtained through time; however, the Company prepares its estimates based on the current situation of each of the CGUs.

F-20

The recoverable amounts are based on value in use. The value in use is determined based on the method of discounted cash flows. The key assumptions used in projecting cash flows are:

• Margin on EBITDA is determined by dividing EBITDA (operating income plus depreciation and amortization) by total revenues.

• Margin on CAPEX is determined by dividing capital expenditures (“CAPEX”) by total revenues.

• Pre-tax weighted average cost of capital (“WACC”) is used to discount the projected cash flows.

As discount rate, the Company uses the WACC which was determined for each of the cash generating units and is described in the following paragraphs.

The estimated discount rates to perform the IAS 36 “Impairment of assets”, impairment test for each CGU consider market participants assumptions. Market participants were selected taking into consideration size, operations and characteristics of the business that were similar to those of Company.

The discount rates represent the current market assessment of the risks specific to each CGU, taking into consideration the time value of money and individual risks of the underlying assets that have not been incorporated in the cash flow estimates. The discount rate calculation is based on the specific circumstances of the Company and its operating segments. The WACC takes into account both debt and equity costs. The cost of equity is derived from the expected return on investment for each GCU. The cost of debt is based on the interest-bearing borrowings the Company is obliged to service. Segment-specific risk is incorporated by applying individual beta factors.

The beta factors are evaluated annually based on publicly available market data.

Market participant assumptions are important because, not only do they include industry data for growth rates, but also management assesses how the CGU’s position, relative to its competitors, might change over the forecasted period.

The most significant forward-looking estimates used for the 2017 and 2018 impairment evaluations are shown below:

	Average margin on EBITDA	Average margin on CAPEX	Average pre-tax discount rate (WACC)
2017:
Europe (7 countries)	25.59% - 52.46%	7.34% - 14.97%	9.06% - 19.04%
Brazil (fixed line, wireless and TV)	35.28%	22.13%	11.71%
Puerto Rico	23.31%	8.31%	4.42%
Dominican Republic	45.79%	15.55%	19.23%
Mexico (fixed line and wireless)	35.48%	8.72%	16.13%
Ecuador	37.83%	10.07%	23.57%
Peru	29.64%	16.75%	13.61%
El Salvador	40.36%	17.99%	25.14%
Chile	22.04%	12.45%	6.15%
Colombia	41.93%	19.88%	19.06%
Other countries	9.16% - 48.18%	0.43% - 23.43%	7.89% - 24.28%

F-21

	Average margin on EBIDTA		Average margin on CAPEX		Average pre-tax discount rate (WACC)las
2018:
Europe (7 countries)		22.13% - 41.51%		8.13% - 19.40%		8.36% - 22.08%
Brazil (fixed line, wireless and TV)		36.43%		21.88%		10.38%
Puerto Rico		23.86%		9.89%		4.81%
Dominican Republic		48.64%		18.43%		17.66%
Mexico (fixed line and wireless)		36.33%		7.93%		16.30%
Ecuador		39.83%		11.26%		24.45%
Peru		30.29%		19.95%		11.52%
El Salvador		45.36%		22.61%		18.01%
Chile		25.91%		14.99%		6.62%
Colombia		45.01%		17.14%		20.29%
Other countries		7.90% - 45.91%		0.61% - 23.96%		9.97% - 31.63%

Sensitivity to changes in assumptions:

The implications of the key assumptions for the recoverable amount are discussed below:

Margin on CAPEX- The Company performed a sensitivity analysis by increasing its CAPEX by 5% and maintaining all other assumptions the same. The sensitivity analysis would require the Company to adjust the amount of its long-lived assets in its CGUs with potential impairment of approximately Ps. 1,558,823

WACC- Additionally, should the Company increase by 50 base points in WACC per CGU and maintain all other assumptions the same, the carrying amount of the long-lived assets, would be impaired by approximately Ps. 1,135,854.

m) Leases

The determination of whether an agreement is, or contains, a lease is based on the substance of the agreement and requires the Company to assess if performance of the agreement is dependent on the use of a specific asset and whether the agreement transfers the right of use of the asset to the Company.

Operating leases

Leases under which the lessor retains a significant portion of the risks and benefits inherent to the ownership of the leased asset are considered operating leases. Payments made under operating lease agreements are charged to results of operations on a straight-line basis over the rental period.

Finance leases

Lease agreements that substantially transfer all the risks and benefits of ownership of the leased assets to the Company are accounted for as finance leases. Accordingly, upon commencement of the lease, the asset, which is classified based on its nature, and its associated debt are recorded at the lower of the fair value of the leased asset or the present value of the lease payments. Finance lease payments are apportioned between the reduction of lease liability and the finance cost so that a constant interest rate is determined on the outstanding liability balance. Finance costs are charged to results of operations over the life of the agreement.

n) Financial assets and liabilities

Financial assets

Initial recognition and measurement

Financial assets are classified, at initial recognition, as subsequently measured at amortized cost, fair value through other comprehensive income (OCI), and fair value through profit or loss.

F-22

The classification of financial assets at initial recognition depends on the financial asset’s contractual cash flow characteristics and the Company’s business model for managing them, with the exception of trade receivables that do not contain a significant financing component or for which the Company has applied the practical expedient, the Company initially measures a financial asset at its fair value plus, in the case of a financial asset not at fair value through profit or loss, transaction costs.

– Subsequent measurement

For purposes of subsequent measurement, financial assets are classified in four categories:

• Financial assets at amortized cost (debt instruments)

• Financial assets at fair value through OCI with recycling of cumulative gains and losses (debt instruments)

• Financial assets designated at fair value through OCI with no recycling of cumulative gains and losses upon derecognition (equity instruments)

• Financial assets at fair value through profit or loss

Financial assets at amortized cost (debt instruments)

The Company measures financial assets at amortized cost if both of the following conditions are met:

• The financial asset is held within a business model with the objective to hold financial assets in order to collect contractual cash flows, and

• The contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding

Financial assets at amortized cost are subsequently measured using the effective interest (EIR) method and are subject to impairment. Gains and losses are recognized in profit or loss when the asset is derecognized, modified or impaired.

The Company’s financial assets at amortized cost includes cash and cash equivalents, loans and receivables.

Financial assets at fair value through OCI with recycling of cumulative gains and losses (debt instruments)

The Company measures debt instruments at fair value through OCI if both of the following conditions are met:

• The financial asset is held within a business model with the objective of both holding to collect contractual cash flows and selling, and

• The contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding

For debt instruments at fair value through OCI, interest income, foreign exchange revaluation and impairment losses or reversals are recognized in the statements of profit or loss and computed in the same manner as for financial assets measured at amortized cost. The remaining fair value changes are recognized in OCI. Upon derecognition, the cumulative fair value change recognized in OCI is recycled to profit or loss.

Financial assets designated at fair value through OCI with no recycling of cumulative gains and losses upon derecognition (equity instruments)

Upon initial recognition, the Company can elect to classify irrevocably its equity investments as equity instruments designated at fair value through OCI when they meet the definition of equity under IAS 32 Financial Instruments: Presentation and are not held for trading. The classification is determined on an instrument by instrument basis.

F-23

Gains and losses on these financial assets are never recycled to profit or loss. Dividends are recognized as other income in the statements of profit or loss when the right of payment has been established, except when the Company benefits from such proceeds as a recovery of part of the cost of the financial asset, in which case, such gains are recorded in OCI. Equity instruments designated at fair value through OCI are not subject to impairment assessment.

Financial assets at fair value through profit or loss

Financial assets at fair value through profit or loss include financial assets held for trading, financial assets designated upon initial recognition at fair value through profit or loss, or financial assets mandatorily required to be measured at fair value. Financial assets are classified as held for trading if they are acquired for the purpose of selling or repurchasing in the near term. Derivatives, including separated embedded derivatives, are also classified as held for trading unless they are designated as effective hedging instruments. Financial assets with cash flows that are not solely payments of principal and interest are classified and measured at fair value through profit or loss, irrespective of the business model. Notwithstanding the criteria for debt instruments to be classified at amortized cost or at fair value through OCI, as described above, debt instruments may be designated at fair value through profit or loss on initial recognition if doing so eliminates, or significantly reduces, an accounting mismatch.

Financial assets at fair value through profit or loss are carried in the statements of financial position at fair value with net changes in fair value recognized in the consolidated statements of comprehensive income within “Valuation of derivatives, interest cost from labor obligations and other financial items”.

Derecognition of financial assets

A financial asset is primarily derecognized when:

• The rights to receive cash flows from the asset have expired, or

• The Company has transferred its rights to receive cash flows from the asset or has assumed an obligation to pay the received cash flows in full without material delay to a third party under a ‘pass-through’ arrangement; and either (a) the Company has transferred substantially all the risks and rewards of the asset, or (b) the Company has neither transferred nor retained substantially all the risks and rewards of the asset, but has transferred control of the asset

When the Company has transferred its rights to receive cash flows from an asset or has entered into a passthrough arrangement, it evaluates if, and to what extent, it has retained the risks and rewards of ownership. When it has neither transferred nor retained substantially all the risks and rewards of the asset, nor transferred control of the asset, the Company continues to recognize the transferred asset to the extent of its continuing involvement. In that case, the Company also recognizes an associated liability. The transferred asset and the associated liability are measured on a basis that reflects the rights and obligations that the Company has retained.

Impairment of financial assets

The Company recognizes an allowance for expected credit losses (ECLs) for all debt instruments not held at fair value through profit or loss. ECLs are based on the difference between the contractual cash flows due in accordance with the contract and all the cash flows that the Company expects to receive, discounted at an approximation of the original effective interest rate. The expected cash flows will include cash flows from the sale of collateral held or other credit enhancements that are integral to the contractual terms.

ECLs are recognized in two stages. For credit exposures for which there has not been a significant increase in credit risk since initial recognition, ECLs are provided for credit losses that result from default events that are possible within the next 12-months (a 12-month ECL). For those credit exposures for which there has been a significant increase in credit risk since initial recognition, a loss allowance is required for credit losses expected over the remaining life of the exposure, irrespective of the timing of the default (a lifetime ECL).

F-24

For some trade receivables and contract assets based on available information, the Company applies the simplified approach in calculating ECLs. Therefore, the Company does not track changes in credit risk, but instead recognizes a loss allowance based on lifetime ECLs at each reporting date. The Company has established a loss rate approach that is based on its historical credit loss experience, adjusted for forward-looking factors specific to the debtors and the economic environment.

Financial liabilities

Initial recognition

Financial liabilities are classified, at initial recognition, as financial liabilities at fair value through profit or loss, loans and borrowings, payables, or as derivatives designated as hedging instruments in an effective hedge, as appropriate.

All financial liabilities are recognized initially at fair value and, in the case of loans and borrowings and payables, net of directly attributable transaction costs.

The Company’s financial liabilities include trade and other payables, loans and borrowings including bank overdrafts, and derivative financial instruments.

— Subsequent measurement

The measurement of financial liabilities depends on their classification, as described below:

Financial liabilities at fair value through profit or loss financial liabilities at fair value through profit or loss include financial liabilities held for trading and financial liabilities designated upon initial recognition as at fair value through profit or loss. IFRS

Financial liabilities are classified as held for trading if they are incurred for the purpose of repurchasing in the near term. This category also includes derivative financial instruments entered into by the Company that are not designated as hedging instruments in hedge relationships as defined by IFRS 9. Separated embedded derivatives are also classified as held for trading unless they are designated as effective hedging instruments.

Gains or losses on liabilities held for trading are recognized in the statements of profit or loss.

Financial liabilities designated upon initial recognition at fair value through profit or loss are designated at the initial date of recognition, and only if the criteria in IFRS 9 are satisfied. The Company has not designated any financial liability as at fair value through profit or loss.

Loans and borrowings

After initial recognition, interest-bearing loans and borrowings are subsequently measured at amortized cost using the EIR method. Gains and losses are recognized in profit or loss when the liabilities are derecognized as well as through the EIR amortization process.

Amortized cost is calculated by taking into account any discount or premium on acquisition and fees or costs that are an integral part of the EIR. The EIR amortization is included as finance costs in the statements of profit or loss.

Derecognition of financial liabilities

A financial liability is derecognized when the obligation under the liability is discharged, cancelled or expires. When an existing financial liability is replaced by another from the same lender on substantially different terms,

F-25

or the terms of an existing liability are substantially modified, such an exchange or modification is treated as the derecognition of the original liability and the recognition of a new liability. The difference in the respective carrying amounts is recognized in the statements of profit or loss.

Offsetting of financial instruments

Financial assets and financial liabilities are offset and the net amount is reported in the consolidated statements of financial position if there is a currently enforceable legal right to offset the recognized amounts and there is an intention to settle on a net basis, to realize the assets and settle the liabilities simultaneously.

o) Transactions in foreign currency

Transactions in foreign currency are initially recorded at the prevailing exchange rate at the time of the related transactions. Foreign currency denominated assets and liabilities are subsequently translated at the prevailing exchange rate at the financial statements reporting date. Exchange differences determined from the transaction date to the time foreign currency denominated assets and liabilities are settled or translated at the financial statements reporting date are charged or credited to the results of operations.

In determining the spot exchange rate to use on initial recognition of the related asset, expense or income (or part of it) on the derecognition of a non-monetary asset or non-monetary liability relating to advance consideration, the date of the transaction is the date on which the Company initially recognizes the non-monetary asset or non-monetary liability arising from the advance consideration. If there are multiple payments or receipts in advance, the Company determines the transaction date for each payment or receipt of advance consideration.

The exchange rates used for the translation of foreign currencies against the Mexican peso are as follows:

		Average exchange rate						Closing exchange rate at December 31,
Country or Zone	Currency	2016		2017		2018		2017		2018
Argentina (1)	Argentine Peso (AR$)		1.2632		1.1489		0.7311		1.0610		0.5221
Brazil	Real (R$)		5.3868		5.9346		5.2937		5.9815		5.0797
Colombia	Colombian Peso (COP$)		0.0061		0.0064		0.0065		0.0066		0.0061
Guatemala	Quetzal		2.4548		2.5755		2.5591		2.6940		2.5440
U.S.A. (2)	US Dollar		18.6529		18.9400		19.2397		19.7867		19.6829
Uruguay	Uruguay Peso		0.6206		0.6606		0.6274		0.6869		0.6074
Nicaragua	Cordoba		0.6515		0.6307		0.6097		0.6428		0.6088
Honduras	Lempira		0.8109		0.8007		0.7994		0.8330		0.8031
Chile	Chilean Peso		0.0276		0.0292		0.0300		0.0322		0.0283
Paraguay	Guaraní		0.0033		0.0034		0.0034		0.0035		0.0033
Peru	Sol (PEN$)		5.5232		5.8054		5.8517		6.0976		5.8406
Dominican Republic	Dominican Peso		0.4048		0.3983		0.3876		0.4095		0.3898
Costa Rica	Colon		0.0338		0.0331		0.0332		0.0346		0.0322
European Union	Euro		20.6334		21.3649		22.7101		23.7539		22.5586
Bulgaria	Lev		10.5483		10.9223		11.6110		12.1406		11.5327
Belarus	New Belarusian Ruble		9.3929		9.8087		9.4451		9.9882		9.1319
Croatia	Croatian Kuna		2.7392		2.8619		3.0613		3.1954		3.0435
Macedonia	Macedonian Denar		0.3350		0.3471		0.3688		0.3861		0.3667
Serbia	Serbian Denar		0.1676		0.1762		0.1920		0.2009		0.1907

(1) Year-end rates are used for the translation of revenues and expenses if IAS 29 “Financial Reporting in Hyperinflationary Economies” is applied.

Financial reporting in hyperinflationary economies

F-26

Financial statements of Argentina subsidiaries are restated before translation to the reporting currency of the Company and before consolidation in order to reflect the same value of money for all items. Items recognized in the statements of financial position which are not measured at the applicable year-end measuring unit are restated based on the general price index. All non-monetary items measured at cost or amortized cost is restated for the changes in the general price index from the date of transaction or the last hyperinflationary calculation to the reporting date. Monetary items are not restated. All items of shareholders’ equity are restated for the changes in the general price index since their addition or the last hyperinflationary calculation until the end of the reporting period. All items of comprehensive income are restated for the change in a general price index from the date of initial recognition to the reporting date. Gains and losses resulting from the net-position of monetary items are reported in the consolidated statements of operations in financial result in exchange differences. In accordance with IFRS prior year financial statements were not restated.

(2) Includes U.S.A., Ecuador, El Salvador, Puerto Rico and Panama.

As of April 9, 2019, the exchange rate between the US dollar and the Mexican Peso was $18.9701.

p) Accounts payable, accrued liabilities and provisions

Liabilities are recognized whenever (i) the Company has current obligations (legal or assumed) resulting from a past event, (ii) when it is probable the obligation will give rise to a future cash disbursement for its settlement, and (iii) the amount of the obligation can be reasonably estimated.

When the effect of the time value of money is significant, the amount of the liability is determined as the present value of the expected disbursements to settle the obligation. The discount rate is determined on a pre-tax basis and reflects current market conditions at the financial statements´ reporting date and, where appropriate, the risks specific to the liability. Where discounting is used, an increase in the liability is recognized as finance expense.

Contingent liabilities are recognized only when it is probable they will give rise to a future cash disbursement for their settlement.

Also, contingencies are only recognized when they will generate a loss.

q) Employee benefits

The Company has defined benefit pension plans for its subsidiaries Puerto Rico Telephone Company, Teléfonos de Mexico, Claro Brasil, and Telekom Austria. Claro Brasil also has medical plans and defined contribution plans and Telekom Austria provides retirement benefits to its employees under a defined contribution plan. The Company recognizes the costs of these plans based upon independent actuarial computations and are determined using the projected unit credit method. The latest actuarial computations were prepared as of December 31, 2018.

Mexico

Mexican subsidiaries have the obligation to pay seniority premiums to personnel based on the Mexican Federal labor law which also establishes the obligation to make certain payments to personnel who cease to provide services under certain circumstances. Pensions (for Telmex) and seniority premiums are determined based on the salary of employees in their final year of service, the number of years worked at and their age at the moment of retirement.

The costs of pensions, seniority premiums and severance benefits, are recognized based on calculations by independent actuaries using the projected unit credit method using financial hypotheses, net of inflation.

Telmex has established an irrevocable trust fund and makes annual contributions to that fund.

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Puerto Rico

In Puerto Rico, the Company has noncontributing pension plans for full-time employees, which are tax qualified as they meet Employee Retirement Income Security Act of 1974 requirements.

The pension benefit is composed of two elements:

(i) An employee receives an annuity at retirement if they meet the rule of 85 (age at retirement plus accumulated years of service). The annuity is calculated by applying a percentage times years of services to the last three years of salary.

(ii) The second element is a lump-sum benefit based on years of service ranging from 9 to 12 months of salary. Health care and life insurance benefits are also provided to retirees under a separate plan (post-retirement benefits).

Brazil

Claro Brasil provides a defined benefit plan and post-retirement medical assistance plan, and a defined contribution plan, through a pension fund that supplements the government retirement benefit for certain employees.

Under the defined benefit plan, the Company makes monthly contributions to the pension fund equal to 17.5% of the employee’s aggregate salary. In addition, the Company contributes a percentage of the aggregate salary base for funding the post-retirement medical assistance plan for the employees who remain in the defined benefit plan. Each employee makes contributions to the pension fund based on age and salary. All newly hired employees automatically adhere to the defined contribution plan and no further admittance to the defined benefit plan is allowed. For the defined contribution plan, see Note 17.

Austria

Telekom Austria provides retirement benefits to its employees under defined contribution and defined benefit plans.

The Company pays contributions to publicly or privately administered pension or severance insurance plans on mandatory or contractual basis. Once the contributions have been paid, the Company has no further payment obligations. The regular contributions are recognized as employee expenses in the year in which they are due.

All other employee benefit obligations provided in Austria are unfunded defined benefit plans for which the Company records provisions which are calculated using the projected unit credit method. The future benefit obligations are measured using actuarial methods on the basis of an appropriate assessment of the discount rate, rate of employee turnover, rate of compensation increase and rate of increase in pensions.

For severance and pensions, the subsidiary recognizes actuarial gains and losses in other comprehensive income. The re-measurement of defined benefit plans relates to actuarial gains and losses only as Telekom Austria holds no plan assets. Interest expense related to employee benefit obligations is reported in “Valuation of derivatives, interests cost from labor obligation and other financial items, net” in the statements of comprehensive income.

Other subsidiaries

For the rest of the Company’s subsidiaries, there are no defined benefit plans or compulsory defined contribution structures. However, certain subsidiaries make contributions to national pension, social security and severance plans in accordance with the percentages and rates established by the applicable social security and labor laws of each country. Such contributions are made to the entities designated by the countries legislation and are recorded as direct labor expenses in the consolidated statements of comprehensive income as they are incurred.

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Remeasurements of defined benefit plans, comprising of actuarial gains and losses, the effect of the asset ceiling, excluding net interest and the return on plan assets (excluding net interest), are recognized immediately in the consolidated statements of financial position with a corresponding debit or credit to retained earnings through OCI in the period in which they occur. Re-measurements are not reclassified to profit or loss in subsequent periods.

Past service costs are recognized in profit or loss on the earlier of:

(i) The date of the plan amendment or curtailment, and

(ii) The date that the Company recognizes restructuring-related costs

Net interest on liability for defined benefits is calculated by applying the discount rate to the net defined benefit liability or asset and it is recognized in the “valuation of derivatives, interest cost from labor obligations and other financial items” in the consolidated statements of comprehensive income. The Company recognizes the changes in the net defined benefit obligation under “Cost of sales and services” and “Commercial, administrative and general expenses” in the consolidated statements of comprehensive income.

Paid absences

The Company recognizes a provision for the cost of paid absences, such as vacation time, based on the accrual method.

r) Employee profit sharing

Employee profit sharing is paid by certain subsidiaries of the Company to its eligible employees. The Company has employee profit sharing in Mexico, Ecuador and Peru. In Mexico, employee profit sharing is computed at the rate of 10% on the individual subsidiaries taxable base adjusted for employee profit sharing purposes as provided by law.

Employee profit sharing is presented as an operating expense in the consolidated statements of comprehensive income.

s) Taxes

Income taxes

Current income tax payable is presented as a short-term liability, net of prepayments made during the year.

Deferred income tax is determined using the liability method based on the temporary differences between the tax values of the assets and liabilities and their book values at the consolidated financial statements reporting date.

Deferred tax assets and liabilities are measured using the tax rates that are expected to be in effect in the period when the asset will materialize or the liability will be settled, based on the enacted tax rates (and tax legislation) that have been enacted or substantially enacted at the financial statements reporting date. The value of deferred tax assets is reviewed by the Company at each financial statements reporting date and is reduced to the extent that it is more likely that the Company will not have sufficient future tax profits to allow for the realization of all or a part of its deferred tax assets. Unrecognized deferred tax assets are revalued at each financial statements reporting date and are recognized when it is more likely that there will be sufficient future tax profits to allow for the realization of these assets.

Deferred taxes relating to items recognized in Other Comprehensive Income are recognized together with the concept that generated such deferred taxes. Deferred taxes consequence on unremitted earnings from subsidiaries

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and associates are considered as temporary differences, when the timing of the reversal of the temporary differences can be controlled and it is probable that the temporary differences will not reverse in the foreseeable future. Taxes withheld on remitted foreign earnings are creditable against Mexican taxes, thus to the extent that a remittance is to be made, the deferred tax would be limited to the incremental difference between the Mexican tax rate and the rate of the remitting country. As of December 31, 2017 and 2018, the Company has not provided for any deferred taxes related to unremitted foreign earnings.

The Company offsets tax assets and liabilities if it has a legally enforceable right to set off current tax assets and current tax liabilities and the deferred tax assets and deferred tax liabilities relate to income taxes levied by the same tax authority.

Sales tax

Revenues, expenses and assets are recognized net of the amount of sales tax, except:

• When the sales tax incurred on a purchase of assets or services is not recoverable from the taxation authority, in which case, the sales tax is recognized as part of the cost of acquisition of the asset or as part of the expense item, as applicable.

• Receivables and payables that are stated with the amount of sales tax included.

The net amount of sales tax recoverable from, or payable to, the tax authorities is included as part of the current receivables or payables in the consolidated statements of financial position unless they are due in more than a year in which case they are classified as non-current.

t) Advertising

Advertising expenses are recognized as incurred. For the years ended December 31, 2016, 2017 and 2018, advertising expenses were Ps. 28,180,538, Ps. 28,718,563 and Ps. 26,255,952 , respectively, and are presented in the consolidated statements of comprehensive income in the caption “Commercial, administrative and general expenses”.

u) Earnings per share

Basic and diluted earnings per share are determined by dividing net profit of the year by the weighted-average number of shares outstanding during the year. In determining the weighted average number of outstanding shares, shares repurchased by the Company have been excluded.

v) Financial risks

The main risks associated with the Company’s financial instruments are: (i) liquidity risk, (ii) market risk (foreign currency exchange risk and interest rate risk) and (iii) credit risk and counterparty risk. The Board of Directors approves the policies submitted by management to mitigate these risks.

i) Liquidity risk

Liquidity risk is the risk that the Company may not meet its financial obligations associated with financial instruments when they are due. The Company’s financial obligations and commitments are included in Notes 14 and 16.

ii) Market risk

The Company is exposed to certain market risks derived from changes in interest rates and fluctuations in exchange rates of foreign currencies. The Company’s debt is denominated in foreign currencies, mainly in US

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dollars and euros, other than its functional currency. In order to reduce the risks related to fluctuations in the exchange rate of foreign currency, the Company uses derivative financial instruments such as cross-currency swaps and forwards to adjust exposures resulting from foreign exchange currency. The Company does not use derivatives to hedge the exchange risk arising from having operations in different countries.

Additionally, the Company occasionally uses interest rate swaps to adjust its exposure to the variability of the interest rates or to reduce their financing costs. The Company’s practices vary from time to time depending on judgments about the level of risk, expectations of change in the movements of interest rates and the costs of using derivatives. The Company may terminate or modify a derivative financial instrument at any time. See Note 7 for disclosure of the fair value of derivatives as of December 31, 2017 and 2018.

iii) Credit risk

Credit risk represents the loss that could be recognized in case the counterparties fail to comply with their contractual obligations.

The financial instruments that potentially represent concentrations of credit risk are cash and short-term deposits, trade accounts receivable and financial instruments related to debt and derivatives. The Company’s policy is designed in order to limit its exposure to any one financial institution; therefore, the Company’s financial instruments are contracted with several different financial institutions located in different geographic regions.

The credit risk in accounts receivable is diversified because the Company has a broad customer base that is geographically dispersed. The Company continuously evaluates the credit conditions of its customers and generally does not require collateral to guarantee collection of its accounts receivable. The Company monitors on a monthly basis its collection cycle to avoid deterioration of its results of operations.

A portion of the Company’s cash surplus is invested in short- term deposits with financial institutions with high credit ratings.

iv) Sensitivity analysis for market risks

The Company uses sensitivity analyses to measure the potential losses based on a theoretical increase of 100 basis points in interest rates and a 5% fluctuation in exchange rates:

Interest rate

In the event that the Company’s agreed-upon interest rates at December 31, 2018 increased/(decreased) by 100 basis points, the increase in net interest expense would increase/(decrease) by Ps. 32,136,984 and Ps. (31,773,439), respectively.

Exchange rate fluctuations

Should the Company’s debt at December 31, 2018 of Ps. 638,922,453, suffer a 5% increase/(decrease) in exchange rates, the debt would increase/(decrease) by Ps. 3,165,958 and Ps. (10,940,798), respectively.

w) Derivative financial instruments

Derivative financial instruments are recognized in the consolidated statements of financial position at fair value. Valuations obtained by the Company are compared against those of the financial institutions with which the agreements are entered into, and it is the Company’s policy to compare such fair value to a valuation provided by an independent pricing provider in case of discrepancies. Changes in the fair value of derivatives that do not qualify as hedging instruments are recognized immediately in the line “Valuation of derivatives, interest cost from labor obligations and other financial items, net”.

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The Company is exposed to interest rate and foreign currency risks, which tries to mitigate through a controlled risk management program that includes the use of derivative financial instruments. The Company principally uses to offset the risk of exchange rate and interest rate fluctuations. Additionally, for the years ended December 31, 2017 certain of the Company’s derivative financial instruments had been designated, and had qualified, as cash flow hedges. The effective portion of gains or losses on the cash flow derivatives is recognized in equity under the heading “Effect for fair value of derivatives”, and the ineffective portion is charged to results of operations of the period.

x) Current versus non-current classification

The Company presents assets and liabilities in its consolidated statements of financial position based on current/non-current classification.

An asset is current when it is either:

(i) Expected to be realized or intended to be sold or consumed in the normal operating cycle.

(ii) Held primarily for the purpose of trading.

(iii) Expected to be realized within twelve months after the reporting period.

(iv) Cash and cash equivalents unless restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period.

A liability is current when:

• It is expected to be settled in the normal operating cycle.

• It is held primarily for the purpose of trading.

• It is due to be settled within twelve months after the reporting period.

• There is no unconditional right to defer the settlement of the liability for at least twelve months after the reporting period.

The Company classifies all other assets and liabilities, including deferred tax assets and liabilities, as non-current.

y) Presentation of consolidated statements of comprehensive income

The costs and expenses shown in the consolidated statements of comprehensive income are presented in combined manner (based on both their function and nature), which allows a better understanding of the components of the Company’s operating income. This classification allows a comparison to the telecommunications industry.

The Company presents operating income in its consolidated statements of comprehensive income since it is a key indicator of the Company’s performance. Operating income represents operating revenues less operating costs and expenses.

The employee benefits expense recognized for the years ended December 31, 2016, 2017 and 2018 of Ps. 46,759,415, Ps. 48,696,331 and Ps. 47,671,143, respectively is presented as “Cost of sales and services” and of Ps. 63,691,855, Ps. 66,920,537 and Ps. 67,936,876, respectively is presented in “Commercial, administrative and general expenses”.

z) Operating segments

Segment information is presented based on information used by management in its decision-making processes. Segment information is presented based on the geographic areas in which the Company operates.

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The management of the Company is responsible for making decisions regarding the resources to be allocated to the Company’s different segments, as well as evaluating the performance of each segment. Intersegment revenues and costs, intercompany balances as well as investments in shares in consolidated entities are eliminated upon consolidation and reflected in the “eliminations” column in Note 22.

None of the segments records revenue from transactions with a single external customer amounting to 10% or more of the revenues.

Aa) Convenience translation

At December 31, 2018, amounts in U.S. dollars have been included in the consolidated financial statements solely for the convenience of the reader and amounts this translation is not accordance with IFRS have been translated from Mexican pesos at December 31, 2018 at an exchange rate of Ps. 19.6829 per U.S. dollar, which was the exchange rate at that date. Such translation should not be construed as a representation that the Mexican peso can be converted to U.S. dollars at the exchange rate in effect on December 31, 2018 or any other exchange rate.

Ab) Significant accounting judgments, estimates and assumptions

In preparing its consolidated financial statements, the Company makes estimates concerning a variety of matters. Some of these matters are highly uncertain, and its estimates involve judgments it makes based on the available information. In the discussion below, the Company has identified several of these matters for which its financial statements would be materially affected if either (1) the Company uses different estimates that it could have reasonably used or (2) in the future América Móvil changes its estimates in response to changes that are reasonably likely to occur.

The following discussion addresses only those estimates that the Company considers most important based on the degree of uncertainty and the likelihood of a material impact had it used a different estimate. There are many other areas in which the Company uses estimates about uncertain matters, but the reasonably likely effect of changed or different estimates is not material to the financial presentation for those other areas.

Estimated useful lives of plant, property and equipment

The Company currently depreciates most of its network infrastructure based on an estimated useful life determined upon the expected particular conditions of operation and maintenance in each of the countries in which it operates. The estimates are based on AMX’s historical experience with similar assets, anticipated technological changes and other factors, taking into account the practices of other telecommunications companies. The Company reviews estimated useful lives each year to determine, for each particular class of assets, whether they should be changed. The Company may shorten/extend the estimated useful life of an asset class in response to technological changes, changes in the market or other developments. This results in increased/decreased depreciation expense. See Notes 2j) and 10.

Impairment of Long-Lived Assets

The Company has large amounts of long-lived assets, including property, plant and equipment, intangible assets, investments in affiliates and goodwill on its consolidated statements of financial position. The Company is required to test long-lived assets for impairment when circumstances indicate a potential impairment or, in some cases, at least on an annual basis. The impairment analysis for long-lived assets requires the Company to estimate the recoverable amount of the asset, which is the higher of its fair value (minus any disposal costs) and its value in use. To estimate the fair value of a long-lived asset, the Company typically takes into account recent market transactions or, if no such transactions can be identified, the Company uses a valuation model that requires making certain assumptions and estimates. Similarly, to estimate the value in use of long-lived assets, the

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Company typically makes various assumptions about the future prospects for the business to which the asset relates, considers market factors specific to that business and estimates future cash flows to be generated by that business. Based on this impairment analysis, including all assumptions and estimates related thereto, as well as guidance provided by IFRS relating to the impairment of long-lived assets different assumptions and estimates could materially impact the Company’s reported financial results. More conservative assumptions of the anticipated future benefits from these businesses could result in impairment charges, which would decrease net income and result in lower asset values on the consolidated statements of financial position. Conversely, less conservative assumptions could result in smaller or no impairment charges, higher net income and higher asset values. The key assumptions used to determine the recoverable amount for the Company’s CGUs, are further explained in Notes 2l), 10 and 11.

Deferred Income Taxes

The Company is required to estimate its income taxes in each of the jurisdictions in which it operates. This process involves the jurisdiction-by-jurisdiction estimation of actual current tax exposure and the assessment of temporary differences resulting from the differing treatment of certain items, such as accruals and amortization, for tax and financial reporting purposes, as well as net operating loss carry-forwards and other tax credits. These items result in deferred tax assets and liabilities as discussed in Note 2 s). The analysis is based on estimates of taxable income in the jurisdictions in which the Company operates and the period on which the deferred tax assets and liabilities will be recovered or settled. If actual results differ from these estimates, or the Company adjusts these estimates in future periods, its financial position and results of operations may be materially affected.

In assessing the future realization of deferred tax assets, the Company considers future taxable income, ongoing planning strategies and future results in its operations. In the event that the estimates of projected future taxable income are lowered, or changes in current tax regulations are enacted that would impose restrictions on the timing or extent of the ability to utilize the tax benefits of net operating loss carry-forwards in the future, an adjustment to the recorded amount of deferred tax assets would be made, with a related charge to income. See Note 13.

Accruals

Accruals are recorded when, at the end of the period, the Company has a present obligation as a result of past events, whose settlement requires an outflow of resources that is considered probable and can be measured reliably. This obligation may be legal or constructive, arising from, but not limited to, regulation, contracts, common practice or public commitments, which have created a valid expectation for third parties that the Company will assume certain responsibilities. The amount recorded is the best estimation performed by the Company’s management in respect of the disbursement that will be required to settle the obligations, considering all the information available at the date of the financial statements, including the opinion of external experts, such as legal advisors or consultants. Accruals are adjusted to account for changes in circumstances for ongoing matters and the establishment of additional accruals for new matters.

If the Company is unable to reliably measure the obligation, no accrual is recorded and information is then presented in the notes to its consolidated financial statements. Because of the inherent uncertainties in these estimations, actual expenditures may be different from the originally estimated amount recognized. See Note 15.

The Company is subject to various claims and contingencies related to tax, labor and legal proceedings as described in Note 16c).

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Labor Obligations

The Company recognizes liabilities on its consolidated statements of financial position and expenses in its statements of comprehensive income to reflect its obligations related to its post-retirement seniority premiums, pension and retirement plans in the countries in which it operates and offer defined contribution and benefit pension plans. The amounts the Company recognizes are determined on an actuarial basis that involves estimations and accounts for post-retirement and termination benefits.

The Company uses estimates in four specific areas that have a significant effect on these amounts: (i) the rate of return the Company assumes its pension plans will earn on its investments, (ii) the salaries increase rate that the Company assumes it will observe in future years, (iii) the discount rates that the Company uses to calculate the present value of its future obligations and (iv) the expected inflation rate. The assumptions applied are further disclosed in Note 17. These estimates are determined based on actuarial studies performed by independent experts using the projected unit-credit method.

ac) Retrospective adjustment

The following amounts in the consolidated statements of comprehensive income for the years ended December 31, 2016 and 2017, have been retrospectively reclassified to conform to the presentation for the year ended December 31, 2018.

In the Consolidated Statements of Comprehensive Income:

	As reported 2016		Retrospective reclassification			2016 As adjustments
Operating revenues:
Mobile voice services	Ps.	242,302,380	Ps.	(242,302,380	)	Ps.	—
Fixed voice services		95,299,154		(95,299,154	)		—
Mobile data services		256,936,895		(256,936,895	)		—
Fixed data services		126,278,206		(126,278,206	)		—
Pay television		78,268,778		(78,268,778	)		—
Other related services		32,799,952		(32,799,952	)		—
Revenues services		—		831,885,365			831,885,365
	Ps.	831,885,365	Ps.	—		Ps.	831,885,365

	As reported 2017		Retrospective reclassification			2017 As adjustments
Operating revenues:
Mobile voice services	Ps.	221,751,600	Ps.	(221,751,600	)	Ps.	—
Fixed voice services		89,856,743		(89,856,743	)		—
Mobile data services		308,526,994		(308,526,994	)		—
Fixed data services		139,277,613		(139,277,613	)		—
Pay television		86,882,606		(86,882,606	)		—
Other related services		32,115,767		(32,115,767	)		—
Revenues services		—		878,411,323			878,411,323
	Ps.	878,411,323	Ps.	—		Ps.	878,411,323

3. Cash and Cash Equivalents

Cash and cash equivalents are comprised of short-term deposits with different financial institutions. Cash equivalents only include instruments with purchased maturity of less than three months. The amount includes the amount deposited, plus any interest earned.

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4. Equity investments at fair value through OCI and other short-term investments

As of December 31, 2017 and 2018, equity investments at fair value through OCI and other short-term investments includes an equity investments in KPN for Ps. 46,682,657 and Ps. 39,028,083, respectively, and other short-term investments for Ps. 12,438,019 and Ps. 9,987,851, respectively.

The investment in KPN is carried at fair value with changes in fair value being recognized through other comprehensive (loss) items (equity) in the Company’s consolidated statements of financial position. As of December 31, 2017 and 2018, the Company has recognized in equity changes in fair value of the investment of Ps. 622,424 and Ps. (3,765,688), respectively, net of deferred taxes, through other comprehensive (loss) gain items in equity.

During the years ended December 31, 2016, 2017 and 2018, the Company received dividends from KPN for an amount of Ps. 5,740,092, Ps. 2,370,559 and Ps. 2,605,333, respectively; which are included within “Valuation of derivatives, interest cost from labor obligations, and other financial items, net” in the consolidated statements of comprehensive income. Another short-term investment item of Ps. 9,987,851, as of December 31, 2018 (Ps. 12,438,019 in 2017) represents a cash deposit used to guarantee a short-term obligation for one of the Company’s foreign subsidiaries and are presented at their carrying value, which approximates fair value.

5. Accounts receivable from subscribers, distributors, recoverable taxes contractual assets and other, net

a) An analysis of accounts receivable by component at December 31, 2017 and 2018 is as follows:

	At December 31,
	2017			2018
Subscribers and distributors	Ps.	178,722,706		Ps.	173,053,226
Telecommunications carriers for network interconnection and other services		8,671,416			5,543,263
Recoverable taxes (i)		40,477,188			46,706,298
Sundry debtors		14,736,340			12,685,281
Contractual assets (Note 2i, a)		—			34,718,749
Impairment of trade receivables		(39,044,925	)		(40,798,025	)
Total net	Ps.	203,562,725		Ps.	231,908,792
Non-current subscribers, distributors and contractual assets		9,786,581			15,681,872
Total current subscribers, distributors and contractual assets	Ps.	193,776,144		Ps.	216,226,920

(i) In accordance with the favorable resolution obtained from the authorities, in 2018 the subsidiary Claro Brasil recognized a benefit for the exclusion of the Tax on the Circulation of Goods and the Provision of Services (Imposto sobre a Circulação de Mercadorias e Prestação de Serviços, or “ICMS “) in the calculation bases of the Social Integration Program (Social Integration Program, or” PIS “) and the Contribution for the Financing of Social Security (Contribution to or Financing of Social Security, or” COFINS “) in the amount total of Ps. 12,295,869, that includes interest of Ps. 6,127,656. The asset was recognized based on the certainty of obtaining the economic benefit.

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b) Changes in the allowance for expected credit losses is as follows:

	For the years ended December 31,
	2016			2017			2018
Balance at beginning of year	Ps.	(27,495,158	)	Ps.	(37,351,677	)	Ps.	(39,044,925	)
Increases recorded in expenses		(16,987,769	)		(20,766,362	)		(19,535,707	)
Adjustment on initial application of IFRS 9 (Note 2i, b)		—			—			(2,400,783	)
Write-offs		12,587,567			17,713,992			15,497,254
Translation effect		(5,456,317	)		1,359,122			4,686,136
Balance at end of year	Ps.	(37,351,677	)	Ps.	(39,044,925	)	Ps.	(40,798,025	)

c) The following table shows the aging of accounts receivable at December 31, 2017 and 2018, for subscribers and distributors:

Past due

Total

Unbilled services provided

a-30 days

31-60 days

61-90 days

Greater than 90 days

December 31, 2017

Ps. 178,722,706

Ps. 78,384,174

Ps. 46,758,825

Ps. 6,780,671

Ps. 4,375,188

Ps. 42,423,848

December 31, 2018

Ps. 173,053,226

Ps. 62,623,654

Ps. 46,816,302

Ps. 6,315,277

Ps. 4,168,952

Ps. 53,129,041

d) The following table shows the accounts receivable from subscribers and distributors included in the impairments of trade receivables, as of December 31, 2017 and 2018:

	Total		1-90 days		Greater than 90 days
December 31, 2017		Ps. 39,044,925		Ps. 3,807,945		Ps. 35,236,980
December 31, 2018		Ps. 40,798,025		Ps. 4,079,803		Ps. 36,718,222

e) An analysis of contract assets and liabilities at December 31, 2018 is as follows:

	2018
Contract Assets:
Balance at the beginning of the year	Ps.	29,640,953
Additions		32,029,279
Disposals		(25,243,487	)
Translation effect		(1,707,996	)
Balance at the end of the year	Ps.	34,718,749
Non-current contract assets	Ps.	5,437,263
Current portion contracts assets	Ps.	29,281,486

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6. Related Parties

a) The following is an analysis of the balances with related parties as of December 31, 2017 and 2018. All of the companies were considered affiliates of América Móvil since the Company’s principal shareholders are either direct or indirect shareholders in the related parties.

	2017		2018
Accounts receivable:
Sears Roebuck de México, S.A. de C.V.	Ps.	211,491	Ps.	264,976
Sanborns Hermanos, S.A.		91,233		312,706
Patrimonial Inbursa, S.A.		246,874		214,180
Carso Infraestructura y Construcción, S.A. de C.V. and Subsidiaries		89,585		179,852
Grupo Condumex, S.A. de C.V. and Subsidiaries		47,269		35,007
Operadora de Sites Mexicanos, S.A. de C.V.		14,252		16,634
Other		167,526		240,250
Total	Ps.	868,230	Ps.	1,263,605
	2017		2018
Accounts payable:
Carso Infraestructura y Construcción, S.A. de C.V. and Subsidiaries	Ps.	947,761	Ps.	1,403,414
Grupo Condumex, S.A. de C.V. and Subsidiaries		812,427		784,678
Grupo Financiero Inbursa, S.A.B. de C.V.		38,847		235,745
Fianzas Guardiana Inbursa, S.A. de C.V.		276,633		227,014
PC Industrial, S.A. de C.V. and Subsidiaries		136,859		83,502
Enesa, S.A. de C.V. and Subsidiaries		50,609		22,630
Other		277,276		217,230
Total	Ps.	2,540,412	Ps.	2,974,213

For the years ended December 31, 2016, 2017 and 2018, the Company has not recorded any impairment of receivables in connection with amounts owed by related parties.

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b) For the years ended December 31, 2016, 2017 and 2018, the Company conducted the following transactions with related parties:

	2016		2017		2018
Investments and expenses:
Construction services, purchases of materials, inventories and property, plant and equipment (i)	Ps.	9,917,280	Ps.	11,030,944	Ps.	7,211,960
Rent of towers		4,748,503		5,326,366		6,168,592
Insurance premiums, fees paid for administrative and operating services, brokerage services and others (ii)		4,118,469		4,135,578		4,134,380
Other services		1,899,818		2,802,667		1,864,017
	Ps.	20,684,070	Ps.	23,295,555	Ps.	19,378,949
Revenues:
Revenues services	Ps.	411,076	Ps.	416,047	Ps.	679,220
Sales of equipment		2,679,591		2,313,840		1,296,204
	Ps.	3,090,667	Ps.	2,729,887	Ps.	1,975,424

i) In 2018, this amount includes Ps.5,622,791 (Ps. 9,829,991 in 2017 and Ps. 9,547,530 in 2016) for network construction services and construction materials purchased from subsidiaries of Grupo Carso, S.A.B. de C.V. (Grupo Carso).

ii) In 2018, this amount includes Ps. 778,191 (Ps. 789,253 in 2017 and Ps. 812,247 in 2016) for network maintenance services performed by Grupo Carso subsidiaries; Ps. 13,784 in 2018 (Ps. 15,695 in 2017, and Ps. 705,074 in 2016) for software services provided by an associate; Ps. 2,541,703 in 2018 (Ps. 3,330,038 in 2017 and Ps. 2,406,058 in 2016) for insurance premiums with Seguros Inbursa S.A. and Fianzas Guardiana Inbursa, S.A., which, in turn, places most of such insurance with reinsurers.

c) The aggregate compensation paid to the Company’s, directors (including compensation paid to members of the Audit and Corporate Practices Committee), and senior management in 2018 was approximately Ps. 5,300 and Ps. 70,100, respectively. None of the Company’s directors is a party to any contract with the Company or any of its subsidiaries that provides for benefits upon termination of employment. The Company does not provide pension, retirement or similar benefits to its directors in their capacity as directors. The Company’s executive officers are eligible for retirement and severance benefits required by Mexican law on the same terms as all other employees.

d) Österreichische Bundes- und Industriebeteiligungen GmbH (ÖBIB) is considered a related party due to it is a significant non-controlling shareholder in Telekom Austria. Through Telekom Austria, América Móvil is related to the Republic of Austria and its subsidiaries, which are mainly ÖBB Group, ASFINAG Group and Post Group as well as Rundfunk und Telekom Reguliegungs-GmbH, all of which these are related parties. In 2016, 2017 and 2018, none of the individual transactions associated with government agencies or government-owned entities of Austria were considered significant to América Móvil.

7. Derivative Financial Instruments

To mitigate the risks of future increases in interest rates and foreign exchange rates for the servicing of its debt, the Company has entered into derivative contracts in over-the-counter transactions carried out with financial institutions. In 2018 the weighted-average interest rate of the total debt including the impact of interest rate derivatives held by the Company is 4.1% (4.0% and 3.7% in 2017 and 2016, respectively).

F-39

An analysis of the derivative financial instruments contracted by the Company at December 31, 2017 and 2018 is as follows:

	At December 31,
	2017				2018
Instrument	Notional amount in millions		Fair Value		Notional amount in millions		Fair Value
Assets:
Swaps US Dollar-Mexican peso	US$	2,800		Ps.4,766,102	US$	3,490		Ps. 2,058,831
Swaps Euro-Mexican peso	€	—		—		—		—
Swaps Yen-US Dollar	¥	13,000		521,270	¥	13,000		581,948
Forwards US Dollar-Mexican peso	US$	1,744		1,600,666		—		—
Forwards US Dollar-Brazilian real	US$	100		44,280	US$	150		126,287
Swaps Swiss Franc-US Dollar	CHF	475		178,710		—		—
Swaps Euro-Brazilian real	€	450		359,671	€	300		1,080,552
Interest rate swap		Ps.200		916		—		—
Forwards Brazilian Real-US Dollar		—		—	BRL $	2,823		1,107,630
Forwards Euro-Brazilian real	€	400		330,427	€	150		123,005
Forwards US Dollar-Swiss franc	CHF	75		121,981		—		—
Forwards Euro-US Dollar	€	204		113,361	€	710		209,295
Total Assets				Ps. 8,037,384				Ps. 5,287,548

	At December 31,
	2017				2018
Instrument	Notional amount in millions		Fair Value		Notional amount in millions		Fair Value
Liabilities:
Swaps US Dollar-Euro	US$	2,092	Ps.	(8,340,970)	US$	2,025	Ps.	(5,114,863)
Swaps Pound sterling-Euro	£	740		(3,376,091)	£	740		(4,027,312)
Swap Pound sterling-US Dollar	£	2,010		(1,676,636)	£	2,010		(5,836,607)
Forwards US Dollar-Mexican Peso		—		—	US$	977		(772,704)
Forwards Euro-US Dollar		—		—	€	950		(333,586)
Call spread option	€	750		(48,422)		—		—
Put option	€	374		(482,645)	€	374		(988,669)
Call spread option	€	3,000		(434,696)	€	3,000		(33,838)
Total Liabilities			Ps.	(14,359,460)			Ps.	(17,107,579)
Non-current liability			Ps.	(3,756,921)			Ps.	(3,567,863)
Total current liability			Ps.	(10,602,539)			Ps.	(13,539,716)

The changes in the fair value of these derivative financial instruments for the years ended December 31, 2016, 2017 and 2018 amounted to a gain (loss) of Ps. (9,622,233), Ps. 8,192,567 and Ps. (4,686,407). Such amounts are included in the consolidated statements of comprehensive income as part of the caption “Valuation of derivatives interest cost from labor obligations and other financial items, net”.

F-40

The maturities of the notional amount of the derivatives are as follows:

Instrument	Notional amount in millions		2019		2020		2021		2022		2023 Thereafter
Assets
Swaps US Dollar-Mexican peso	US$			—		—		—		1,600		1,890
Swaps Yen-US Dollar	¥			—		—		—		—		13,000
Swaps Euro-Brazilian real	€			300		—		—		—		—
Forwards Brazilian Real-US Dollar		BRL		1,680		—		1,143		—		—
Forwards Euro-Brazilian Real	€			150		—		—		—		—
Forwards US Dollar-Brazilian Real	US$			150		—		—		—		—
Forwards Euro-US Dollar	€			710		—		—		—		—
Liabilities
Swaps US Dollar-Euro	US$			25		—		—		—		2,000
Swaps Pound sterling-Euro	£			—		—		—		—		740
Swap Pound sterling-US Dollar	£			—		550		—		—		1,460
Forwards US Dollar-Mexican Peso	US$			977		—		—		—		—
Forwards Euro-US Dollar	€			950		—		—		—		—
Put option	€			—		—		—		—		374
Call spread option	€			—		3,000		—		—		—

8. Inventories, net

An analysis of inventories at December 31, 2017 and 2018 is as follows:

	2017			2018
Mobile phones, accessories, computers, TVs, cards and other materials		Ps. 42,262,511			Ps. 43,723,492
Less: Reserve for obsolete and slow-moving inventories		(3,452,946	)		(3,418,130	)
Total		Ps. 38,809,565			Ps. 40,305,362

For the years ended December 31, 2016, 2017 and 2018, the cost of inventories recognized in cost of sales was Ps. 172,495,376, Ps. 170,154,336 and Ps. 180,013,986 respectively.

F-41

9. Other assets, net

An analysis of other assets at December 31, 2017 and 2018 is as follows:

	2017		2018
Current portion:
Advances to suppliers (different from PP&E and inventories)		Ps. 9,536,654		Ps. 12,931,247
Prepaid insurance		683,091		949,590
Costs of mobile equipment and computers associated with deferred revenues		6,182,010		599,628
Other		950,991		815,728
		Ps. 17,352,746		Ps.15,296,193
Non-current portion:
Recoverable taxes		Ps. 12,249,372		Ps. 11,514,455
Prepayments for the use of fiber optics		4,361,668		3,985,216
Prepaid expenses and judicial deposits (1)		25,926,436		26,961,930
Total		Ps. 42,537,476		Ps. 42,461,601

For the years ended December 31, 2016, 2017 and 2018, amortization expense for other assets was Ps. 1,340,609, Ps. 620,680 and Ps. 798,243, respectively.

(1) Judicial deposits represent cash and cash equivalents pledged in order to fulfill the collateral requirements for tax contingencies mainly in Brazil. At December 31, 2017 and 2018, the amount for these deposits is Ps. 20,288,382 and Ps. 18,172,342, respectively. Based on its evaluation of the underlying contingencies, the Company believes that such amounts are recoverable.

10. Property, Plant and Equipment, net

a) An analysis of property, plant and equipment, net at December 31, 2016, 2017 and 2018 is as follows:

	At December 31, 2015			Additions		Retirements			Business combinations		Translation effect of Foreign Subsidiaries		Depreciation for the year			At December 31, 2016
Cost
Network in operation and equipment	Ps.	641,384,702		Ps.	101,794,197	Ps.	(8,963,076	)	Ps.	1,873,445	Ps.	235,186,745	Ps.	—		Ps.	971,276,013
Land and buildings		54,794,386			2,900,511		(2,845,298	)		3,839		7,281,973		—			62,135,411
Other assets		106,468,602			24,368,918		(10,717,096	)		69,937		24,736,655		—			144,927,016
Construction in process and advances plant suppliers (1)		38,850,776			70,517,319		(70,911,593	)		11,255		11,252,127		—			49,719,884
Spare parts for operation of the network		20,342,389			34,010,751		(27,641,919	)		5,520		1,566,307		—			28,283,048
Total		861,840,855			233,591,696		(121,078,982	)		1,963,996		280,023,807		—			1,256,341,372
Accumulated depreciation
Network in operation and equipment		236,731,728			—		(1,968,376	)		—		153,147,349		107,976,385			495,887,086
Buildings		4,567,588			—		(975,284	)		—		3,709,952		3,179,066			10,481,322
Other assets		47,057,084			—		(25,099,710	)		—		10,396,438		16,105,885			48,459,697
Spare parts for operation of the network		(44,423	)		—		(54,280	)		—		20,896		401,008			323,201
Total	Ps.	288,311,977		Ps.	—	Ps.	(28,097,650	)	Ps.	—	Ps.	167,274,635	Ps.	127,662,344		Ps.	555,151,306
Net Cost	Ps.	573,528,878		Ps.	233,591,696	Ps.	(92,981,332	)	Ps.	1,963,996	Ps.	112,749,172	Ps.	(127,662,344	)	Ps.	701,190,066

F-42

	At December 31, 2016		Additions		Retirements			Business combinations		Effect of translation of foreign subsidiaries			Depreciation for the year			At December 31, 2017
Cost
Network in operation and equipment		Ps. 971,276,013		Ps.  78,272,882		Ps. (21,657,715	)	Ps.	599,306		Ps.(38,824,540	)		Ps.            —			Ps.  989,665,946
Land and buildings		62,135,411		2,858,996		(415,219	)		27,686		(2,022,685	)		—			62,584,189
Other assets		144,927,016		19,287,525		(8,112,571	)		80,734		(5,866,897	)		—			150,315,807
Construction in process and advances plant suppliers (1)		49,719,884		66,383,381		(41,279,573	)		34,705		(737,023	)		—			74,121,374
Spare parts for operation of the network		28,283,048		27,013,148		(27,979,816	)		3,576		(728,358	)		—			26,591,598
Total		1,256,341,372		193,815,932		(99,444,894	)		746,007		(48,179,503	)		—			1,303,278,914
Accumulated depreciation
Network in operation and equipment		495,887,086		—		(21,214,724	)		—		(32,860,339	)		110,533,486			552,345,509
Buildings		10,481,322		—		(1,568,542	)		—		(940,054	)		2,682,559			10,655,285
Other assets		48,459,697		—		(4,572,509	)		—		(2,251,958	)		21,724,299			63,359,529
Spare parts for operation of the network		323,201		—		(9,205	)		—		(4,339	)		265,736			575,393
Total		Ps. 555,151,306		Ps.              —		Ps. (27,364,980	)	Ps.	—		Ps.(36,056,690	)		Ps. 135,206,080			Ps. 626,935,716
Net Cost		Ps. 701,190,066		Ps. 193,815,932		Ps. (72,079,914	)	Ps.	746,007		Ps. (12,122,813	)		Ps. (135,206,080	)		Ps. 676,343,198

	At December 31, 2017		Additions		Retirements			Business combinations		Effect of translation of foreign subsidiaries and hyperinflation adjustment			Depreciation for the year			At December 31, 2018
Cost
Network in operation and equipment		Ps. 989,665,946		Ps.   68,900,443		Ps.  (1,610,246	)		Ps. 128,246		Ps. (87,888,453	)		—			Ps. 969,195,936
Land and buildings		62,584,189		4,429,433		(3,987,671	)		8,874		(5,904,499	)		—			57,130,326
Other assets		150,315,807		25,268,252		(13,377,798	)		2,578		(12,399,702	)		—			149,809,137
Construction in process and advances plant suppliers (1)		74,121,374		92,285,397		(76,978,798	)		1,379		(8,336,823	)		—			81,092,529
Spare parts for operation of the network		26,591,598		49,380,349		(44,626,488	)		1,939		(2,902,869	)		—			28,444,529
Total		1,303,278,914		240,263,874		(140,581,001	)		143,016		(117,432,346	)		—			1,285,672,457
Accumulated depreciation
Network in operation and equipment		552,345,509		—		(28,712,096	)		—		(67,907,227	)		104,279,361			560,005,547
Buildings		10,655,285		—		(2,311,442	)		—		(2,157,996	)		2,625,102			8,810,949
Other assets		63,359,529		—		(2,418,837	)		—		(6,579,983	)		22,172,785			76,533,494
Spare parts for operation of the network		575,393		—		(160,696	)		—		(131,429	)		38,479			321,747
Total		Ps. 626,935,716		Ps.                 —		Ps.  (33,603,071	)		Ps.        —		Ps. (76,776,635	)		Ps.   129,115,727			Ps. 645,671,737
Net Cost		Ps. 676,343,198		Ps.240,263,874		Ps. (106,977,930	)		Ps. 143,016		Ps. (40,655,711	)		Ps. (129,115,727	)		Ps. 640,000,720

⁽¹⁾ Construction in progress includes fixed and mobile network facilities as well as satellite developments and fiber optic which is in the process of being installed.

The completion period of construction in progress is variable and depends upon the type of plant and equipment under construction.

b) At December 31, 2017 and 2018, property, plant and equipment include the following assets under capital leases:

	2017			2018
Assets under capital leases		Ps.  8,116,532			Ps.7,770,681
Accumulated depreciation		(3,475,014	)		(3,530,241	)
		Ps.  4,641,518			Ps.  4,240,440

F-43

c) At December 31, 2018 and 2017, Claro Brasil has land and buildings and other equipment that are pledged in guarantee of legal proceedings in the amount of Ps.3,166,882 and Ps. 3,521,082, respectively.

d) Relevant information related to the computation of the capitalized borrowing costs is as follows:

	Year ended December 31,
	2016		2017		2018
Amount invested in the acquisition of qualifying assets		Ps. 52,974,400		Ps. 49,642,370		Ps. 45,456,630
Capitalized interest		2,861,307		2,875,034		2,020,288
Capitalization rate		5.4%		5.8%		4.4%

Capitalized interest is being amortized over a period of estimated useful life of the related assets.

e) On October 20, 2017, our subsidiary Star One signed a contract with SSL — Space Systems Loral for construction of the Star One D2 satellite, which will be equipped with transponders 52 in the C and Ku bands, 20 Gbps of capacity in Band Ka and a certain capacity in X-band. The cost of this Project is estimated to be approximately Ps. 6,391,104 (US$ 323,000) and the launch will take place at the end of 2019. At December 31, 2018 and 2017 the amount recorded in Construction in progress amounts to Ps. 2,896,399 (R$551,528) and Ps. 916,240 (R$153,179), respectively.

11. Intangible assets, net and goodwill

a) An analysis of intangible assets at December 31, 2016, 2017 and 2018 is as follows:

	For the year ended December 31, 2016
	Balance at beginning of year			Acquisitions			Acquisitions in business combinations			Disposals and other			Amortization of the year			Effect of translation of foreign subsidiaries			Balance at end of year
Licenses and rights of use	Ps.	175,295,775		Ps.	9,129,949		Ps.	360,144		Ps.	1,269,478		Ps.	—		Ps.	56,684,016		Ps.	242,739,362
Accumulated amortization		(84,846,524	)		—			—			—			(10,255,271	)		(31,606,303	)		(126,708,098	)
Net		90,449,251			9,129,949			360,144			1,269,478			(10,255,271	)		25,077,713			116,031,264
Trademarks		22,824,013			—			101,655			(13,820	)		—			4,877,302			27,789,150
Accumulated amortization		(11,523,707	)		—			—			—			(330,576	)		(3,367,974	)		(15,222,257	)
Net		11,300,306			—			101,655			(13,820	)		(330,576	)		1,509,328			12,566,893
Customer relationships		18,394,407			—			1,904,503			—			—			5,946,598			26,245,508
Accumulated amortization		(3,962,875	)		—			—			—			(3,231,518	)		(5,240,681	)		(12,435,074	)
Net		14,431,532			—			1,904,503			—			(3,231,518	)		705,917			13,810,434
Software licenses		8,782,768			3,854,066			26,871			(829,680	)		—			1,040,771			12,874,796
Accumulated amortization		(2,424,598	)		(41,185	)		(8,367	)		829,680			(3,469,461	)		(9,809	)		(5,123,740	)
Net		6,358,170			3,812,881			18,504			—			(3,469,461	)		1,030,962			7,751,056
Content rights		2,634,527			2,242,556			—			(217,057	)		—			216,272			4,876,298
Accumulated amortization		(428,746	)		—			—			(1,612	)		(2,236,141	)		—			(2,666,499	)
Net		2,205,781			2,242,556			—			(218,669	)		(2,236,141	)		216,272			2,209,799
Total of intangibles, net	Ps.	124,745,040		Ps.	15,185,386		Ps.	2,384,806		Ps.	1,036,989		Ps.	(19,522,967	)	Ps.	28,540,192		Ps.	152,369,446
Goodwill (Note 12)	Ps.	137,113,716		Ps.	—		Ps.	3,953,023		Ps.	(356,832	)	Ps.	—		Ps.	11,922,728		Ps.	152,632,635

F-44

	For the year ended December 31, 2017
	Balance at beginning of year			Acquisitions		Acquisitions in business combinations		Disposals and other			Amortization of the year			Effect of translation of foreign subsidiaries			Balance at end of year
Licenses and rights of use	Ps.	242,739,362		Ps.	12,347,051	Ps.	53,923	Ps.	(1,037,458	)	Ps.	—		Ps.	(6,689,054	)	Ps.	247,413,824
Accumulated amortization		(126,708,098	)		—		—		244,564			(11,879,489	)		4,233,585			(134,109,438	)
Net		116,031,264			12,347,051		53,923		(792,894	)		(11,879,489	)		(2,455,469	)		113,304,386
Trademarks		27,789,150			127,823		82,868		(29,804	)		—			809,175			28,779,212
Accumulated amortization		(15,222,257	)		—		—		34,464			(3,179,461	)		(474,151	)		(18,841,405	)
Net		12,566,893			127,823		82,868		4,660			(3,179,461	)		335,024			9,937,807
Customer relationships		26,245,508			—		512,667		(882,338	)		—			1,109,877			26,985,714
Accumulated amortization		(12,435,074	)		—		—		882,338			(3,769,777	)		(806,982	)		(16,129,495	)
Net		13,810,434			—		512,667		—			(3,769,777	)		302,895			10,856,219
Software licenses		12,874,796			3,351,200		—		(1,698,118	)		—			527,720			15,055,598
Accumulated amortization		(5,123,740	)		—		—		1,212,669			(3,699,363	)		(204,727	)		(7,815,161	)
Net		7,751,056			3,351,200		—		(485,449	)		(3,699,363	)		322,993			7,240,437
Content rights		4,876,298			2,099,084		—		(63,137	)		—			(194,803	)		6,717,442
Accumulated amortization		(2,666,499	)		—		—		(195,658	)		(1,820,092	)		165,584			(4,516,665	)
Net		2,209,799			2,099,084		—		(258,795	)		(1,820,092	)		(29,219	)		2,200,777
Total of intangibles, net	Ps.	152,369,446		Ps.	17,925,158	Ps.	649,458	Ps.	(1,532,478	)	Ps.	(24,348,182	)	Ps.	(1,523,776	)	Ps.	143,539,626
Goodwill (Note 12)	Ps.	152,632,635		Ps.	—	Ps.	951,348	Ps.	(134,525	)	Ps.	—		Ps.	(1,986,226	)	Ps.	151,463,232

	For the year ended December 31, 2018
	Balance at beginning of year			Acquisitions		Acquisitions in business combinations		Disposals and other			Amortization of the year			Effect of translation of foreign subsidiaries and Hyperinflation adjustment			Balance at end of year
Licenses and rights of use	Ps.	247,413,824		Ps.	4,227,244		—	Ps.	1,508,274			—		Ps.	(19,670,368	)	Ps.	233,478,974
Accumulated amortization		(134,109,438	)		—		—		(1,005,877	)		(11,347,089	)		16,281,825			(130,180,579	)
Net		113,304,386			4,227,244				502,397			(11,347,089	)		(3,388,543	)		103,298,395
Trademarks		28,779,212			159,958		6,631		—						(738,635	)		28,207,166
Accumulated amortization		(18,841,405	)		—		—		—			(4,973,602	)		275,046			(23,539,961	)
Net		9,937,807			159,958		6,631		—			(4,973,602	)		(463,589	)		4,667,205
Customer relationships		26,985,714			74,637		15,556		—						(1,532,839	)		25,543,068
Accumulated amortization		(16,129,495	)						—			(3,754,312	)		1,122,270			(18,761,537	)
Net		10,856,219			74,637		15,556		—			(3,754,312	)		(410,569	)		6,781,531
Software licenses		15,055,598			2,004,550		3,006		(905,610	)		—			(1,848,286	)		14,309,258
Accumulated amortization		(7,815,161	)		—				2,677,848			(3,491,629	)		924,139			(7,704,803	)
Net		7,240,437			2,004,550		3,006		1,772,238			(3,491,629	)		(924,147	)		6,604,455
Content rights		6,717,442			850,779		—		—			—			(18,512	)		7,549,709
Accumulated amortization		(4,516,665	)		—		—		—			(2,231,978	)		(14,949	)		(6,763,592	)
Net		2,200,777			850,779		—		—			(2,231,978	)		(33,461	)		786,117
Total of intangibles, net	Ps.	143,539,626		Ps.	7,317,168	Ps.	25,193	Ps.	2,274,635		Ps.	(25,798,610	)	Ps.	(5,220,309	)	Ps.	122,137,703
Goodwill	Ps.	151,463,232		Ps.	1,455	Ps.	333,284	Ps.	(1,094,861	)		—		Ps.	(5,136,613	)	Ps.	145,566,497

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b) The aggregate carrying amount of goodwill is allocated as follows:

	2017		2018
Europe (7 countries)		Ps. 53,143,542		Ps. 53,066,729
Brazil (Fixed, wireless and TV)		24,708,740		21,388,124
Puerto Rico		17,463,394		17,463,394
Dominican Republic		14,186,723		14,186,723
Colombia		13,981,033		12,770,381
México		9,852,912		9,856,601
Peru		3,958,110		3,086,981
Chile		2,834,134		2,576,214
El Salvador		2,510,577		2,510,577
Ecuador		2,155,385		2,155,385
Other countries		6,668,682		6,505,388
		Ps. 151,463,232		Ps. 145,566,497

c) The following is a description of the major changes in the “Licenses and rights of use” caption during the years ended December 31, 2016, 2017 and 2018:

2016 Acquisitions

i) In February 2016, the Company´s subsidiary in Paraguay was granted with the use of 30 MHz of spectrum in the 1700/2100 Mhz frequency. The total cost was Ps. 830,719 (US$ 46,000).

ii) In February 2016, the Company through its subsidiary Radiomóvil Dipsa, S.A. de C.V. (Telcel), acquired through an auction a total of 20MHz in the national wide AWS-1 band and 40 MHz in the AWS-3 band. The concession expires in October 2030. The Company paid an amount of Ps. 2,098,060.

iii) In May 2016, Mtel, located in Bulgaria, acquired 2 x 5 MHz in the 1,800-MHz spectrum for Ps. 135,441 (EUR 6,212). During 2016, Telekom Austria paid Ps. 410,713 (EUR 18,837) for the renewals referring to an obligation obtained from concessions granted in previous years.

iv) On May 26, 2016, the Company’s subsidiary in Peru acquired spectrum in a public auction of the 700 MHz band. The frequency band expires in 2036. The cost of the spectrum was Ps. 5,627,316 (PEN$. 1,002,523).

v) In July 2016, Ecuador Telecom acquired a license to operate TV in Ecuador for a period that ends in 2031. The amount paid was Ps. 27,700 (US$ 1,500).

2017 Acquisitions

i) In 2017, Claro Brasil increased its licenses value by Ps. 3,592,034 due to the cleaning process of the 700 MHz national frequency acquired in September 2014.

ii) On February 24, 2017 Radiomóvil Dipsa renewed its 8.4 MHz national license by paying Ps. 917,431, and on July 14, 2017, it acquired 43 concession titles for frequencies of 2.5 GHz in the amount of Ps. 5,305,498.

iii) Additionally, in 2017, the Company acquired other licenses in Chile, Europe, Uruguay and others countries in the amount of Ps. 2,532,088.

2018 Acquisitions

i. In December, Dominican Republic acquired radio spectrum totaling Ps 709,829 (RD$ 1,831,427) with a useful life of 11 years.

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ii. Additionally, in 2018, the Company acquired other licenses in Paraguay, Puerto Rico, Europe, Argentina, Chile and others countries in the amount of Ps. 3,517,415.

Amortization of intangibles for the years ended December 31, 2016, 2017 and 2018 amounted to Ps. 19,522,968, Ps. 24,348,182and Ps. 25,798,610 respectively.

Some of the jurisdictions in which the Company operates can revoke their concessions under certain circumstances such as imminent danger to national security, national economy and natural disasters.

12. Business combinations, acquisitions, sale and non-controlling interest

a) The following is a description of the major acquisitions of investments in associates and subsidiaries during the years ended December 31, 2016 and 2017:

Acquisitions and sale 2016

a) In January 2016, in order to expand and strengthen its operations in Brazil, the Company through its Brazilian subsidiary, acquired a controlling interest of 99.99% in Brazil Telecomunicações S.A. (“BRTel”), a company operating in the market for Pay TV, Internet and broadband services and serving various municipalities of Brazil under the BLUE brand. The amount paid for the business acquisition was Ps. 1,088,668, net of acquired cash. The goodwill recognized amounted to Ps. 1,046,253.

b) In May 2016, the Company acquired an additional non-controlling interest of 1.8% in Tracfone Wireless Inc. thereby obtaining 100% of its capital stock. The amount paid was Ps. 2,300,553 (US$ 124,673). This transaction was recorded as an equity transaction, and therefore, no gain or loss was recognized.

c) In May 2016, the Company through his subsidiary, América Móvil Perú, S.A.C. acquired 100% of the capital stock of Olo del Perú S.A.C. (“Olo”), and TVS Wireless S.A.C. (“TVS”). Olo and TVS provide telecommunications services throughout Peru and hold radio spectrum in the 2.5 GHz band. The transaction was conditioned to the obtention of the approval of the Peruvian regulator, such approval was finally obtained in December 2016. The amount of the transaction was Ps. 1,854,379 (US$. 102,343) net of acquired cash. In May 2016 the Company paid Ps. 152,214 (US$ 7,554) and in January 2017, after the approval, Ps. 2,079,095 (US$ 94,789). The goodwill recognized amounted to Ps. 1,454,333 in December 2016, Ps. 188,452 in December 2017 and Ps. 329,366 in December 2018.

d) Based on a 2014 shareholder agreement, the Company agreed to ensure a minimal free float of Telekom Austria shares in the market. Consequently, in July 2016, the Company sold shares corresponding to 7.8% of the outstanding common stock of Telekom Austria AG. This sale reduced the overall shareholding of América Movil in Telekom Austria AG from 59.70% to 51.89%. Additionally, in August 2016, the Company sold 0.89% of the outstanding common stock of Telekom Austria AG. Following the successful completion of this transaction, AMX’s stake was reduced to 51.0%. The amount of cash received for these transactions was Ps. 6,323,336. As América Móvil still retains control over Telekom Austria AG, these transactions were recorded as equity transactions.

e) In September 2016, the Company, through his subsidiary Tracfone, acquired certain assets of T-Mobile, that represented a business, which included the brands known as Walmart Mobile and Go Smart. These assets were acquired in order to expand the Company’s distribution channels, add an incremental revenue stream, and assist in the growth of subscribers. There was no cash exchanged in the acquisition. The goodwill recognized amounted to Ps. 1,251,464.

f) In November 2016, Telekom Austria Group acquired 100% of the Belarusian fixed-line operator Atlant Telecom (Atlant) and its subsidiary TeleSet. After the acquisition, Atlant was renamed velcom ACS. Both

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companies are the leading privately owned fixed-line operators in Belarus offering fixed-line broadband, IPTV and cable TV as well as a video and audio library. The acquisition of Atlant and TeleSet is a further step in Telekom Austria Group’s convergence strategy. The final allocation of consideration transferred will be determined once all necessary information regarding identifiable assets is available. The amount paid for the business acquisition was Ps. 582,931, net of acquired cash. The goodwill recognized amounted to Ps. 200,973.

Acquisitions 2017

a) In February 2017, Telekom Austria Group acquired 97.68% of Metronet telekomunikacije through its Croatian subsidiary Vipnet. Metronet is one of the leading alternative fixed business solutions providers in Croatia. The fair values of the assets acquired and liabilities assumed at the acquisition date are reported in the Europe segment. The amount paid for the business acquisition was Ps. 1,550,534, net of acquired cash. The goodwill recognized amounted to Ps. 502,574.

b) During 2017, the Company acquired through its subsidiaries, other entities for which if paid Ps. 3,249,164, net of acquired cash. The identified goodwill has been allocated to the Europe segment. The goodwill recognized amounted to Ps. 260,355.

c) The Company acquired an additional non-controlling interest in its Mexican entities for an amount of Ps. 23,881.

b) Consolidated subsidiaries with non-controlling interests

The Company has control over Telekom Austria, which has a material non-controlling interest. Set out below is summarized information as of December 31, 2017 and 2018 of TKA’s consolidated financial statements. The amounts disclosed for this subsidiary are before inter-company eliminations and using the same accounting policies of América Móvil.

Selected financial data from the statements of financial position

	December 31,
	2017		2018
Assets:
Current assets	Ps.	29,128,486	Ps.	29,854,542
Non-current assets		150,225,260		131,407,408
Total assets	Ps.	179,353,746	Ps.	161,261,950
Liabilities and equity:
Current liabilities	Ps.	30,192,384	Ps.	36,822,034
Non-current liabilities		89,048,150		80,023,800
Total liabilities		119,240,534		116,845,834
Equity attributable to equity holders of the parent		25,808,318		22,621,625
Non-controlling interest (1)		34,304,894		21,794,491
Total equity	Ps.	60,113,212	Ps.	44,416,116
Total liabilities and equity	Ps.	179,353,746	Ps.	161,261,950

(1) In 2017 this amount includes Ps. 14,942,886 for the subordinated perpetual fixed rate bond (see Note 19).

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Summarized statements of comprehensive income

	For the year ended December 31,
	2016		2017		2018
Operating revenues	Ps.	85,185,177	Ps.	93,644,173	Ps.	100,716,444
Operating costs and expenses		81,590,233		86,920,692		95,984,880
Operating income	Ps.	3,594,944	Ps.	6,723,481	Ps.	4,731,564
Net income	Ps.	7,065,770	Ps.	5,656,132	Ps.	3,809,694
Total comprehensive income	Ps.	8,450,837	Ps.	7,737,797	Ps.	5,047,838
Net income attributable to:
Equity holders of the parent	Ps.	3,241,556	Ps.	2,884,627	Ps.	1,942,944
Non-controlling interest		3,824,214		2,771,505		1,866,750
	Ps.	7,065,770	Ps.	5,656,132	Ps.	3,809,694
Comprehensive income attributable to:
Equity holders of the parent	Ps.	4,311,801	Ps.	3,978,263	Ps.	2,574,397
Non-controlling interest		4,139,036		3,759,534		2,473,441
	Ps.	8,450,837	Ps.	7,737,797	Ps.	5,047,838

13. Income Taxes

As explained previously in these consolidated financial statements, the Company is a Mexican corporation which has numerous consolidated subsidiaries operating in different countries. Presented below is a discussion of income tax matters that relates to the Company’s consolidated operations, its Mexican operations and significant foreign operations.

i) Consolidated income tax matters

The composition of income tax expense for the years ended December 31, 2016, 2017 and 2018 is as follows:

	2016			2017			2018
In Mexico:
Current year income tax	Ps.	14,316,005		Ps.	16,568,274		Ps.	28,572,414
Deferred income tax		(12,086,232	)		2,582,287			(2,688,727	)
Foreign:
Current year income tax		15,367,903			13,524,729			19,898,728
Deferred income tax		(6,198,820	)		(7,733,779	)		694,664
	Ps.	11,398,856		Ps.	24,941,511		Ps.	46,477,079

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Deferred tax related to items recognized in OCI during the year:

	For the years ended December 31,
	2016			2017			2018
Remeasurement of defined benefit plans	Ps.	(7,734,732	)	Ps.	3,032,403		Ps.	408,735
Effect of financial instruments acquired for hedging purposes		(21,046	)		(5,337	)
Equity investments at fair value		2,858,452			(266,753	)		1,613,667
Other		136,879			—			(8,922	)
Deferred tax benefit (expense) recognized in OCI	Ps.	(4,760,447	)	Ps.	2,760,313		Ps.	2,013,480

A reconciliation of the statutory income tax rate in Mexico to the consolidated effective income tax rate recognized by the Company is as follows:

	Year ended December 31,
	2016			2017			2018
Statutory income tax rate in Mexico		30.0%			30.0%			30.0%
Impact of non-deductible and non-taxable items:
Tax inflation effects		15.9%			17.8%			7.3%
Derivatives		8.0%			1.0%			0.4%
Employee benefits		4.4%			2.2%			1.3%
Other		9.8%			2.6%			6.3%
Effective tax rate on Mexican operations		68.1%			53.6%			45.3%
Use of unrecognized tax credits in Brazil		(0.6%	)		(0.4%	)		—
Equity interest in net loss of associated companies		(0.2%	)		—			—
Dividends received from associates		(7.9%	)		(1.2%	)		(0.8%	)
Foreign subsidiaries and other non-deductible items, net		(10.8%	)		(8.3%	)		1.5%
Effective tax rate		48.6%			43.7%			46.0%

An analysis of temporary differences giving rise to the net deferred tax liability is as follows:

	Consolidated statements of financial position						Consolidated statements of comprehensive income
	2017			2018			2016			2017			2018
Provisions		Ps.26,268,666			Ps.20,781,421			Ps.1,622,132			Ps.1,579,604			Ps.1,841,705
Deferred revenues		7,461,802			6,866,120			(12,128	)		(965,010	)		3,632,051
Tax losses carry forward		38,332,408			27,881,491			12,706,245			(323,506	)		(5,833,660	)
Property, plant and equipment (1)		(9,929,129	)		(11,756,590	)		2,445,783			1,974,753			453,493
Inventories		2,003,049			2,106,976			(229,571	)		519,046			81,270
Licenses and rights of use (1)		(2,455,877	)		(3,896,788	)		54,182			348,201			961,402
Employee benefits		33,253,071			33,673,874			3,616,952			1,225,310			1,128,209
Other		9,639,995			10,956,823			(1,918,543	)		793,094			(270,407	)
Net deferred tax assets		Ps.104,573,985			Ps.86,613,327
Deferred tax expense in net profit for the year								Ps.18,285,052			Ps.5,151,492			Ps.1,994,063

(1) As of December 31, 2018, the balance included the effects of hyperinflation.

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Reconciliation of deferred tax assets and liabilities, net:

	2016			2017			2018
Opening balance as of January 1,	Ps.	69,817,147		Ps.	98,589,818		Ps.	104,573,985
Deferred tax benefit		18,285,052			5,151,492			1,994,063
Translation effect		15,273,228			(1,687,276	)		(8,854,010	)
Deferred tax benefit (expense) recognized in OCI		(4,760,447	)		2,760,313			2,013,480
Deferred taxes acquired in business combinations		(25,162	)		(240,362	)		(25,827	)
Hyperinflationary effect in Argentina		—			—			(4,907,151	)
Effect of adoption of IFRS 9 (Note 2ai)		—			—			544,628
Effect of adoption of IFRS 15 (Note 2ai)		—			—			(8,725,841	)
Closing balance as of December 31,	Ps.	98,589,818		Ps.	104,573,985		Ps.	86,613,327
Presented in the consolidated statements of financial position as follows:
Deferred income tax assets	Ps.	112,651,699		Ps.	116,571,349		Ps.	111,186,768
Deferred income tax liabilities		(14,061,881	)		(11,997,364	)		(24,573,441	)
	Ps.	98,589,818		Ps.	104,573,985		Ps.	86,613,327

The deferred tax assets are in tax jurisdictions in which the Company considers that based on financial projections of its cash flows, results of operations and synergies between subsidiaries, will generate sufficient taxable income in subsequent periods to utilize or realize such assets.

The Company does not recognize a deferred tax liability related to the undistributed earnings of its subsidiaries, because it currently does not expect these earnings to be taxable or to be repatriated in the near future. The Company’s policy has been to distribute the profits when it has paid the corresponding taxes in its home jurisdiction and the tax can be accredited in Mexico.

At December 31, 2017 and 2018, the balance of the contributed capital account (“CUCA”) is Ps. 510,832,194 and Ps. 536,278,717, respectively. On January 1, 2014, the Cuenta de Utilidad Fiscal Neta (“CUFIN”) is computed on an América Móvil’s stand-alone basis. The balance of the América Móvil’s stand-alone basis CUFIN amounted to Ps. 225,105,342 and Ps. 276,185,284 as of December 31, 2017 and 2018, respectively.

Corporate tax rate

The income tax rate applicable in Mexico from 2016 through 2018 was 30%.

ii) Significant foreign income tax matters

a) Results of operations

The foreign subsidiaries determine their taxes on profits based on their individual taxable income, in accordance with the specific tax regimes of each country.

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The combined income before taxes and the combined provision for taxes of such subsidiaries in 2016, 2017 and 2018 are as follows:

	2016		2017		2018
Combined income before taxes	Ps.	45,697,258	Ps.	38,286,046	Ps.	66,314,883
Combined tax provision differences not deducible-not cumulative in the foreign subsidiaries	Ps.	9,169,083	Ps.	5,790,950	Ps.	20,593,392

The effective income tax rate for the Company’s foreign jurisdictions was 20% in 2016, 15% in 2017 and 31% in 2018 as shown in the table above. The statutory tax rates in these jurisdictions vary, although many approximate 21% to 40%. The primary difference between the statutory rates and the effective rates in 2016, 2017 and 2018 was attributable to dividends received from KPN and other non-deductible items and non-taxable income.

iii) Tax losses

a) At December 31, 2018, the available tax loss carryforwards recorded in deferred tax assets are as follows on a country by country basis:

Country	Balance of available tax loss carryforwards at December 31, 2018		Tax loss carryforward benefit
Brazil		Ps. 59,695,441		Ps. 20,296,450
Austria		20,128,833		5,032,208
Mexico		6,043,603		1,813,081
Colombia		2,239,486		739,030
Nicaragua		2,403		722
Total		Ps. 88,109,766		Ps. 27,881,491

b) The tax loss carryforwards in the different countries in which the Company operates have the following terms and characteristics:

bi) The Company has accumulated Ps. 59,695,441 in net operating loss carryforwards (NOL’s) in Brazil as of December 31, 2018. In Brazil there is no expiration of the NOL’s. However, the NOL´s amount used against taxable income in each year may not exceed 30% of the taxable income for such year. Consequently, in the year in which taxable income is generated, the effective tax rate is 25% rather than the 34% corporate tax rate.

The Company believes that it is more likely than not that the accumulated balances of its net deferred tax assets are recoverable, based on the positive evidence of the Company to generate future taxable income related to the same taxation authority which will result in taxable amounts against which the available tax losses can be utilized before they expire. Positive evidence includes the Company’s recent restructure in 2017 of its operations in Brazil, resulting in an organizational structure that is anticipated to be more efficient and profitable and generated taxable income in 2018.

bii) The Company has accumulated Ps. 20,128,833 in NOL’s in Austria as of December 31, 2018. In Austria, the NOL´s have no expiration, but its annual usage is limited to 75% of the taxable income of the year. The realization of deferred tax assets is dependent upon the expected generation of future taxable income during the periods in which these temporary differences become deductible.

biii) The Company has accumulated $ 6,043,603 of tax losses in Mexico. The Mexican Tax Law establishes an optional regime for group companies called: Of the Optional Regime for Groups of Companies. For these purposes, the integrating (controlling) company must own more than 80% of the shares with voting rights of the

F-52

integrated (controlled) companies. In general terms, the Integration regime allows to differ, for each of the companies that make up the group, and for up to three years, or sooner if certain assumptions are made, the whole of the ISR that results from considering the determination of the individual ISR to its charge is the effect derived from recognizing, indirectly, the tax losses incurred by the companies in the group for the year in question.

The company estimates that there is positive evidence that allows it to use these losses, these should be reduced to the extent that it is considered likely that there will be sufficient taxable profits to allow them to recover in full or in part, the losses will only be compensated when there is a right legally required and are approved by the tax authorities in Mexico.

14. Debt

a) The Company’s short- and long-term debt consists of the following:

At December 31, 2017					(Thousands of Mexican pesos)
Currency	Loan	Interest rate	Maturity		Total
Senior Notes
U.S. dollars
	Fixed-rate Senior notes (i)	5.000%		2019	Ps.	14,840,025
	Fixed-rate Senior notes (i)	5.500%		2019		7,467,145
	Fixed-rate Senior notes (i)	5.000%		2020		42,043,077
	Fixed-rate Senior notes (i)	3.125%		2022		31,658,720
	Fixed-rate Senior notes (i)	6.375%		2035		19,417,282
	Fixed-rate Senior notes (i)	6.125%		2037		7,305,744
	Fixed-rate Senior notes (i)	6.125%		2040		39,573,400
	Fixed-rate Senior notes (i)	4.375%		2042		22,754,705
	Subtotal U.S. dollars				Ps.	185,060,098
Mexican pesos
	Domestic Senior notes (i)	8.110%		2018	Ps.	1,750,000
	Domestic Senior notes (i)	8.270%		2018		1,160,110
	Domestic Senior notes (i)	8.600%		2020		7,000,000
	Domestic Senior notes (i)	0.000%		2025		4,409,873
	Domestic Senior notes (i)	8.360%		2037		5,000,000
	Fixed-rate Senior notes (i)	6.000%		2019		10,000,000
	Fixed-rate Senior notes (i)	6.450%		2022		22,500,000
	Fixed-rate Senior notes (i)	7.125%		2024		11,000,000
	Fixed-rate Senior notes (i)	8.460%		2036		7,871,700
	Subtotal Mexican pesos				Ps.	70,691,683
Euros
	Fixed-rate Senior notes (i)	1.000%		2018	Ps.	14,252,360
	Fixed-rate Senior notes (i)	4.125%		2019		23,753,933
	Exchangeable Bonds (i)	0.000%		2020		67,504,878
	Fixed-rate Senior notes (i)	3.000%		2021		23,753,933
	Fixed-rate Senior notes (i)	3.125%		2021		18,727,775
	Fixed-rate Senior notes (i)	4.000%		2022		19,333,685
	Fixed-rate Senior notes (i)	4.750%		2022		17,815,450
	Fixed-rate Senior notes (i)	3.500%		2023		7,594,262
	Fixed-rate Senior notes (i)	3.259%		2023		17,815,450
	Fixed-rate Senior notes (i)	1.500%		2024		20,190,843
	Fixed-rate Senior notes (i)	1.500%		2026		17,815,450
	Fixed-rate Senior notes (i)	2.125%		2028		15,440,057
	Subtotal Euros				Ps.	263,998,076

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At December 31, 2017					(Thousands of Mexican pesos)
Currency	Loan	Interest rate	Maturity		Total
Pounds sterling
	Fixed-rate Senior notes (i)	5.000%		2026	Ps.	13,368,884
	Fixed-rate Senior notes (i)	5.750%		2030		17,379,549
	Fixed-rate Senior notes (i)	4.948%		2033		8,021,330
	Fixed-rate Senior notes (i)	4.375%		2041		20,053,326
	Subtotal Pounds sterling				Ps.	58,823,089
Swiss francs
	Fixed-rate Senior notes (i)	1.125%		2018	Ps.	11,169,748
	Subtotal Swiss francs				Ps.	11,169,748
Brazilian reais
	Debenture (i)	102.900% of CDI		2020	Ps.	8,972,204
	Promissory Note (i)	102.400% of CDI		2019		5,981,469
	Debenture (i)	103.900% of CDI		2019		5,981,469
	Subtotal Brazilian reais				Ps.	20,935,142
Other currencies
Japanese yen
	Fixed-rate Senior notes (i)	2.950%		2039	Ps.	2,282,608
	Subtotal Japanese yen				Ps.	2,282,608
Chilean pesos
	Fixed-rate Senior notes (i)	3.961%		2035	Ps.	4,312,424
	Subtotal Chilean pesos				Ps.	4,312,424
	Subtotal other currencies				Ps.	6,595,032
Hybrid Notes
Euros
	Euro NC5 Series A Capital Securities (iii)	5.125%		2073	Ps.	21,378,540
	Euro NC10 Series B Capital Securities (iii)	6.375%		2073		13,064,663
	Subtotal Euros				Ps.	34,443,203
Pounds sterling
	GBP NC7 Capital Securities (iii)	6.375%		2073	Ps.	14,705,772
	Subtotal Pounds sterling				Ps.	14,705,772
	Subtotal Hybrid Notes				Ps.	49,148,975

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At December 31, 2017					(Thousands of Mexican pesos)
Currency	Loan	Interest rate	Maturity		Total
Lines of Credit and others
U.S. dollars
	Lines of credit (ii)	L + 0.200% and 1.500% - 7.250%		2018 - 2019	Ps.	14,474,350
Mexican pesos
	Lines of credit (ii)	TIIE + 0.040% - TIIE + 0.175%		2018 - 2019	Ps.	12,500,000
Brazilian reais
	Lines of credit (ii)	107% of CDI - TJLP + 3.500% & 3.000% - 9.500%		2018 -2027	Ps.	4,389,260
Chilean pesos
	Financial Leases	8.700% - 8.970%		2018 - 2027	Ps.	99,446
	Subtotal Lines of Credit and others				Ps.	31,463,056
	Total debt				Ps.	697,884,899
	Less: Short-term debt and current portion of long-term debt				Ps.	51,745,841
	Long-term debt				Ps.	646,139,058

At December 31, 2018					(Thousands of Mexican pesos)
Currency	Loan	Interest rate	Maturity		Total
Senior Notes
U.S. dollars
	Fixed-rate Senior notes (i)	5.000%		2019	Ps.	14,762,175
	Fixed-rate Senior notes (i)	5.500%		2019		7,427,972
	Fixed-rate Senior notes (i)	5.000%		2020		41,822,521
	Fixed-rate Senior notes (i)	3.125%		2022		31,492,640
	Fixed-rate Senior notes (i)	6.375%		2035		19,315,420
	Fixed-rate Senior notes (i)	6.125%		2037		7,267,419
	Fixed-rate Senior notes (i)	6.125%		2040		39,365,800
	Fixed-rate Senior notes (i)	4.375%		2042		22,635,335
	Subtotal U.S. dollars				Ps.	184,089,282
Mexican pesos
	Fixed-rate Senior notes (i)	6.000%		2019	Ps.	10,000,000
	Domestic Senior notes (i)	8.600%		2020		7,000,000
	Fixed-rate Senior notes (i)	6.450%		2022		22,500,000
	Fixed-rate Senior notes (i)	7.125%		2024		11,000,000
	Domestic Senior notes (i)	0.000%		2025		4,629,425
	Fixed-rate Senior notes (i)	8.460%		2036		7,871,700
	Domestic Senior notes (i)	8.360%		2037		5,000,000
	Subtotal Mexican pesos				Ps.	68,001,125

F-55

At December 31, 2018					(Thousands of Mexican pesos)
Currency	Loan	Interest rate	Maturity		Total
Euros
	Fixed-rate Senior notes (i)	4.125%		2019	Ps.	22,558,572
	Exchangeable Bonds (i)	0.000%		2020		64,107,851
	Fixed-rate Senior notes (i)	3.000%		2021		22,558,572
	Fixed-rate Senior notes (i)	3.125%		2021		17,568,739
	Fixed-rate Senior notes (i)	4.000%		2022		18,028,031
	Fixed-rate Senior notes (i)	4.750%		2022		16,918,929
	Fixed-rate Senior notes (i)	3.500%		2023		7,132,481
	Fixed-rate Senior notes (i)	3.259%		2023		16,918,929
	Fixed-rate Senior notes (i)	1.500%		2024		19,174,786
	Fixed-rate Senior notes (i)	1.500%		2026		16,918,929
	Fixed-rate Senior notes (i)	2.125%		2028		14,663,072
	Subtotal Euros				Ps.	236,548,891
Pounds sterling
	Fixed-rate Senior notes (i)	5.000%		2026	Ps.	12,550,801
	Fixed-rate Senior notes (i)	5.750%		2030		16,316,042
	Fixed-rate Senior notes (i)	4.948%		2033		7,530,481
	Fixed-rate Senior notes (i)	4.375%		2041		18,826,202
	Subtotal Pounds sterling				Ps.	55,223,526
Brazilian reais
	Debenture (i)	103.900% of CDI		2019	Ps.	5,079,720
	Promissory notes (i)	102.400% of CDI		2019		5,079,720
	Promissory notes (i)	103.205% of CDI		2019		1,828,699
	Debenture (i)	102.900% of CDI		2020		7,619,580
	Debenture (i)	104.000% of CDI		2021		5,587,692
	Debenture (i)	104.250% of CDI		2021		7,695,776
	Subtotal Brazilian reais				Ps.	32,891,187
Other currencies
Japanese yen
	Fixed-rate Senior notes (i)	2.950%		2039	Ps.	2,334,864
	Subtotal Japanese yen				Ps.	2,334,864
Chilean pesos
	Fixed-rate Senior notes (i)	3.961%		2035	Ps.	3,904,707
	Subtotal Chilean pesos				Ps.	3,904,707
	Subtotal other currencies				Ps.	6,239,571
Hybrid Notes
Euros
	Euro NC10 Series B Capital Securities (iii)	6.375%		2073	Ps.	12,407,214
	Subtotal Euros				Ps.	12,407,214
Pounds sterling
	GBP NC7 Capital Securities (iii)	6.375%		2073	Ps.	13,805,881
	Subtotal Pounds sterling				Ps.	13,805,881
	Subtotal Hybrid Notes					26,213,095

F-56

At December 31, 2018					(Thousands of Mexican pesos)
Currency	Loan	Interest rate	Maturity		Total
Lines of Credit and others
U.S. dollars
	Lines of credit (ii)	L + 0.200% and 1.500% - 8.950%		2019 - 2021	Ps.	11,698,885
Mexican pesos
	Lines of credit (ii)	TIIE + 0.175%		2019	Ps.	4,500,000
Euros
	Lines of credit (ii)	-0.100% - 0.000%		2019	Ps.	5,526,850
Brazilian reais
	Lines of credit (ii)	5.000% - 6.000%		2019 - 2027	Ps.	27,009
Peruvian Soles
	Lines of credit (ii)	4.700% - 12.100%		2019	Ps.	7,898,595
Chilean pesos
	Financial Leases	8.700% - 8.970%		2019 - 2027	Ps.	64,437
	Subtotal Lines of Credit and others				Ps.	29,715,776
	Total debt				Ps.	638,922,453
	Less: Short-term debt and current portion of long-term debt				Ps.	96,230,634
	Long-term debt				Ps.	542,691,819

L = LIBOR (London Interbank Offer Rate)

TIIE = Mexican Interbank Rate

EURIBOR = Euro Interbank Offered Rate

CDI = Brazil Interbank Deposit Rate

TJLP = Brazil Long Term Interest Rate

Interest rates on the Company’s debt are subject to variances in international and local rates. The Company’s weighted average cost of borrowed funds at December 31, 2017, and December 31, 2018 was approximately 4.30% and 4.31%, respectively.

Such rates do not include commissions or the reimbursements for Mexican tax withholdings (typically a tax rate of 4.9%) that the Company must pay to international lenders.

An analysis of the Company’s short-term debt maturities as of December 31, 2017, and December 31, 2018, is as follows:

	2017		2018
Obligations and Senior Notes		Ps.    28,994,496		Ps.      67,365,810
Lines of credit		22,714,383		28,852,364
Financial Leases		36,962		12,460
Total		Ps.    51,745,841		Ps.      96,230,634
Weighted average interest rate		4.0%		5.20%

F-57

The Company’s long-term debt maturities as of December 31, 2018 are as follows:

Years	Amount
2020	Ps.	121,184,630
2021		54,189,122
2022		88,027,828
2023 and thereafter		279,290,239
Total	Ps.	542,691,819

(i) Senior Notes

The outstanding Senior Notes at December 31, 2017, and December 31, 2018, are as follows:

Currency*	2017		2018
U.S. dollars		Ps. 185,060,098		Ps.    184,089,282
Mexican pesos		70,691,683		68,001,125
Euros**		263,998,076		236,548,891
Pounds sterling**		58,823,089		55,223,526
Swiss francs		11,169,748		—
Brazilian reais		20,935,142		32,891,187
Japanese yens		2,282,608		2,334,864
Chilean pesos		4,312,424		3,904,707

* Thousands of Mexican pesos

** Includes secured and unsecured senior notes.

(ii) Lines of credit

At December 31, 2017, and December 31, 2018, debt under lines of credit aggregated to Ps. $31,364 million and Ps. $29,651 million, respectively.

The Company has two revolving syndicated credit facilities, one for the Euro equivalent of U.S. $2,000 million and the other for U.S. $2,500 million maturing in 2021 and 2019, respectively. As long as the facilities are committed, a commitment fee is paid. As of December 31, 2018, these credit facilities were undrawn. Telekom Austria has also an undrawn revolving syndicated credit facility in Euros for €1,000 million that matures in 2019.

(iii) Hybrid Notes

On September 2013, the Company issued three series of Capital Securities (hybrid notes) maturing in 2073: two series denominated in Euros for €1,450 million with a coupon of 5.125% and 6.375% respectively, and one series denominated in pounds sterling in the amount of £550 million with a coupon of 6.375%. The Capital Securities are deeply subordinated, and when they were issued the principal rating agencies stated that they would treat only half of the principal amount as indebtedness for purposes of evaluating our leverage (an analysis referred to as 50.0% equity credit). The Capital Securities are subject to redemption at our option at varying dates beginning in 2018 and 2023, respectively, for the euro-denominated series and beginning in 2020 for the sterling-denominated series.

On September 2018, we exercised the option to call our hybrid bond with a maturity date in 2073 for a total amount of €900 million euros.

KPN

On September 2018, América Móvil delivered 224,695,844 KPN shares, equivalent to 5% of the total outstanding shares, after the maturity of a mandatory conversion bond with a nominal outstanding amount of €750 million Euros.

F-58

The transaction represented the sale of those shares at an effective price of €3.3374 euros per share.

Restrictions

A portion of the debt is subject to certain restrictions with respect to maintaining certain financial ratios, as well as restrictions on selling a significant portion of groups of assets, among others. At December 31, 2018, the Company was in compliance with all these requirements.

A portion of the debt is also subject to early maturity or repurchase at the option of the holders in the event of a change in control of the Company, as defined in each instrument. The definition of change in control varies from instrument to instrument; however, no change in control shall be considered to have occurred as long as its current shareholders continue to hold the majority of the Company’s voting shares.

“Covenants”

In conformity with the credit agreements, the Company is obliged to comply with certain financial and operating commitments. Such covenants limit in certain cases, the ability of the Company or the guarantor to: pledge assets, carry out certain types of mergers, sell all or substantially all of its assets, and sell control of Telcel.

Such covenants do not restrict the ability of AMX’s subsidiaries to pay dividends or other payment distributions to AMX. The more restrictive financial covenants require the Company to maintain a consolidated ratio of debt to EBITDA (defined as operating income plus depreciation and amortization) that does not exceed 4 to 1, and a consolidated ratio of EBITDA to interest paid that is not below 2.5 to 1 (in accordance with the clauses included in the credit agreements).

Several of the financing instruments of the Company may be accelerated, at the option of the debt holder in the case that a change in control occurs.

At December 31, 2018, the Company was in compliance with all the covenants.

15. Accounts payable, accrued liabilities and asset retirement obligations

a) The components of the caption accounts payable and accrued liabilities are as follows:

	At December 31,
	2017		2018
Suppliers		Ps. 106,483,848		Ps. 118,406,380
Sundry creditors		91,842,929		91,087,197
Interest payable		8,930,561		8,535,519
Guarantee deposits from customers		1,460,286		1,421,336
Dividends payable		3,955,783		2,506,835
Total		Ps. 212,673,407		Ps. 221,957,267

b) The balance of accrued liabilities at December 31, 2017 and 2018 are as follows:

	At December 31,
	2017		2018
Current liabilities
Direct employee benefits payable		Ps. 16,673,627		Ps. 16,152,118
Contingencies		51,079,131		40,281,573
Total		Ps. 67,752,758		Ps. 56,433,691

F-59

The movements in contingencies for the years ended December 31, 2017 and 2018 are as follows:

Balance at December 31, 2016

Business combination

Effect of translation

Increase of the year

Applications

Balance at December 31, 2017

Payments

Reversals

Contingencies

Ps. 50,766,070

Ps. 115,971

Ps. (648,685)

Ps. 10,510,473

Ps. (7,618,520)

Ps. (2,046,178)

Ps. 51,079,131

Balance at December 31, 2017

Business combination

Effect of translation

Increase of the year

Applications

Balance at December 31, 2018

Payments

Reversals

Contingencies

Ps. 51,079,131

Ps. 7,812

Ps. (5,729,826)

Ps. 15,683,252

Ps. (6,203,329)

Ps. (14,555,467)

Ps. 40,281,573

Contingencies include tax, labor, regulatory and other legal type contingencies. See Note 16 c) for detail of contingencies.

c) The movements in the asset retirement obligations for the years ended December 31, 2017 and 2018 are as follows:

Balance at   December 31,   2016

Effect of     translation

Increase of     the year

Applications

Balance at     December 31,     2017

Payments

Reversals

Asset retirement obligations

Ps. 16,288,631

Ps. (119,928)

Ps. 3,160,320

Ps. (126,088)

Ps. (957,806)

Ps. 18,245,129

Balance at December 31, 2017

Effect of translation

Increase of the year

Applications

Balance at December 31, 2018

Payments

Reversals

Asset retirement obligations

Ps. 18,245,129

Ps. (2,020,853)

Ps. 1,062,745

Ps. (151,364)

Ps. (1,164,056)

Ps. 15,971,601

The discount rates used for the asset retirement obligation are based on market rates that are expected to be undertaken by the dismantling or restoration of cell sites, and may include labor costs.

16. Commitments and Contingencies

a) Leases

At December 31, 2017 and 2018, the Company has entered into several lease agreements with related parties and third parties for the buildings where its offices are located (as a lessee), as well as with the owners of towers and or premises where the Company has installed radio bases.

An analysis of the minimum rental payments for the next five years is shown below. In some cases, rental amounts are increased each year based on the National Consumer Price Index (INPC).

The Company has the following non-cancelable commitments under finance leases:

Year ended December 31,
2019	Ps.	22,920
2020		13,365
2021		12,068
2022		10,751
2023		9,399
2024 and thereafter		34,011
Total	Ps.	102,514
Less: amounts representing finance charges		23,837
Present value of net minimum lease payments		78,677
Less current portion		14,240
Long-term obligations	Ps.	64,437

F-60

An analysis of non-cancellable operating leases is as follows:

Year ended December 31,
2019	Ps.	24,034,366
2020		22,104,366
2021		15,522,020
2022		14,250,332
2023		12,046,800
2024 and thereafter		49,991,937
Total	Ps.	137,949,821

Rent expense for the years ended December 31, 2016, 2017 and 2018 was Ps. 32,300,963, Ps. 35,571,283 and Ps. 34,421,817, respectively.

b) Commitments

The Company and its subsidiaries have commitments that mature on different dates, referring to CAPEX and cell phone purchases.

As of December 31, 2018, the total amounts equivalent to the contract period are detailed below:

Year ended December 31,
2019	Ps.	88,233,626
2020		68,170,083
2021		55,358,156
2022		13,322,961
Total	Ps.	225,084,826

c) Contingencies

I. MEXICO

Tax Assessment and Fine

In 2014, the Mexican Tax Administration Service (Servicio de Administración Tributaria or “SAT”) notified the Company of a Ps. 529,700 tax assessment related to the Company’s tax return for the fiscal year ended December 31, 2005, and reduced the Company’s consolidated tax loss for that year from Ps. 8,556,000 to zero. The Company has challenged this assessment before the Mexican courts and a final resolution is pending. The Company has not established a provision in the accompanying consolidated financial statements for a loss arising from this assessment, which it does not consider probable.

In 2012, the SAT notified the Company and its subsidiary Sercotel, S.A. de C.V. (“Sercotel”) of a fine of approximately Ps. 1,400,000 for alleged tax improprieties arising from the transfer of certain accounts receivable from one of the Company’s subsidiaries to Sercotel. In 2014, the Company challenged the fine and a final resolution is pending. The Company has not established a provision in the accompanying consolidated financial statements for a loss arising from this fine, which the Company does not consider probable.

Telcel Mobile Termination Rates

The mobile termination rates between Telcel and other network operators have been the subject of various legal proceedings. With respect to the interconnection fees for 2017, 2018 and 2019, Telcel has challenged the applicable resolutions and final resolutions are pending.

F-61

Given the fact that the “zero rate” that prevented Telcel from charging interconnection rates in its mobile network was held unconstitutional by the (Suprema Corte de Justicia de la Nación “SCJN”), the IFT has determined asymmetric interconnection rates for the termination of traffic in Telcel’s and other operators’ networks for 2018 and 2019. The resolutions setting such rates have been challenged by Telcel and final resolutions are pending.

The Company expects that mobile termination rates, as well as other rates applicable to mobile interconnection (such as transit), will continue to be the subject of litigation and administrative proceedings in Mexico. The Company cannot predict when or how these matters will be resolved or the financial effects of any such resolution.

Class Action Lawsuits

Telcel is subject to two class action lawsuits initiated by customers allegedly affected by Telcel’s quality of service and wireless and broadband rates. The Company cannot assess whether these class action lawsuits could have an adverse effect on the Company’s business and results of operations in the event that they are resolved against Telcel due to the lack of factual and legal claims underlying these proceedings. Consequently, the Company has not established a provision in the accompanying consolidated financial statements for a loss arising from these proceedings.

IFT Proceedings Against Telmex

In 2008, Telmex entered into certain commercial agreements with Dish México Holdings, S. de R.L. de C.V. and related companies (“Dish”), involving billing, collection services, distribution and equipment leasing. In addition, Telmex had an option to purchase shares representing 51% of the capital stock of Dish México, S. de R.L. de C.V. (“Dish México”). In 2014, Telmex waived its rights under the option.

In 2015, the IFT imposed a fine of Ps. 14,414 on Telmex on the grounds that the IFT was not notified of an alleged merger (concentración) between Telmex and Dish in 2008. Telmex filed an appeal for relief (amparo) and a final resolution is pending.

In 2015, in relation with some Dish operations, the IFT initiated several proceedings in order to determine potential violations of (i) Telmex’s concession, with respect to an alleged indirect exploitation of a public television services concession, which in 2019, the appeal for relief was granted by a competent court (Tribunal Colegiado); the Company cannot predict the outcome of such proceedings, and (ii) certain provisions of the Mexican Constitution (Constitución Política de los Estados Unidos Mexicanos) and the Federal Telecommunications and Broadcasting Law (Ley Federal de Telecomunicaciones y Radiodifusión) regarding the cost-free rule of re-transmission of television broadcast signals (commonly known as “must offer”), through other operators. In 2018, the IFT absolved Telmex and Dish from any responsibility in connection with the sanction procedure initiated by the IFT for the alleged violation of item (ii) above.

In 2018, the IFT imposed a fine of Ps. 2,543,937 on Telmex relating to a sanction procedure triggered by the alleged breach in 2013 and 2014 of certain minimum quality goals for link services. Telmex challenged this fine and a final resolution is pending.

II. BRAZIL

a. Tax Matters

ICMS

As of December 31, 2018, the Company’s Brazilian subsidiaries Claro Brasil, Primesys Soluções Empresariais S.A. (“Primesys”), Telmex Do Brasil Ltda. (“TdB”), Americel S.A. (“Americel”), Brasil Telecomunicações S.A.

F-62

(“BrTel”) and TVSAT Telecomunicações S.A. (“TV SAT”), had aggregate tax contingencies related to value-added tax (“ICMS”) of approximately Ps. 55,455,306 (R$ 10,917,000). As of December 31, 2018, the Company has established a provision of Ps. 3,362,775 (R$ 662,000) in the accompanying consolidated financial statements for the losses arising from these contingencies which the Company considers probable. Such ICMS contingencies include the following tax assessments which the Company does not consider probable and therefore, has not established a provision in the accompanying consolidated financial statements:

• Tax assessments against Star One, S.A. (currently Claro Brasil as surviving entity of merger) in the amount of Ps. 21,167,194 (R$ 4,167,000) based on allegations that the provision of satellite capacity is subject to ICMS. The Company is contesting these tax assessments in separate proceedings at different litigation stages and has obtained favorable judicial decisions in two proceedings.

• Tax assessments against Claro Brasil and Americel in the amount of Ps. 5,861,997 (R$ 1,154,000), due to a decision that held certain benefits granted by the Brazilian states unconstitutional.

• Tax assessment against Primesys in the amount of Ps. 3,916,464 (R$ 771,000), related to ICMS over certain activities not deemed to be part of data communication services.

CSLL/IRPJ

As of December 31, 2018 Claro Brasil, Americel, BrTel, and TV SAT had aggregate tax contingencies related to Social Contribution on Net income (“CSLL”) and Corporate Income Tax (“IRPJ”) in the amount of Ps. 17,779,021 (R$ 3,500,000). As of December 31, 2018, the Company has established a provision of Ps. 4,835,894 (R$ 952,000) in the accompanying consolidated financial statements for the losses arising from these contingencies, which the Company considers probable.

The aforementioned CSLL/IRPJ contingencies include a tax assessment against Claro Brasil in the amount of Ps. 10,906,159 (R$ 2,147,000) alleging the undue amortization of goodwill amounts between 2009 and 2012, and charging CSLL, IRPJ and penalties due to the late payment of taxes. Claro Brasil has challenged this assessment at the administrative level and a final resolution is pending. The Company has established a provision of Ps. 558,769 (R$ 110,000) in the accompanying consolidated financial statements for the losses arising from these contingencies, which the Company considers probable.

PIS/COFINS

As of December 31, 2018, Claro Brasil, Americel, TdB, Primesys and Brasil Center Comunicações Ltda. (“Brasil Center”) had aggregate tax assessments related to Social Integration Program (“PIS”) and Contribution for Social Security Financing (“COFINS”) in the amount of Ps. 16,488,772 (R$ 3,246,000). As of December 31, 2018, the Company has established a provision of Ps. 5,861,997 (R$ 1,154,000) in the accompanying consolidated financial statements for the losses arising from the PIS/COFINS assessments, which the Company considers probable. With respect to such PIS/COFINS assessments:

• Claro Brasil and Americel have commenced lawsuits against the Brazilian Federal Revenue Service seeking a ruling on constitutional grounds to exclude interconnection fees from the base used to calculate PIS and COFINS tax obligations. Pending a final resolution and pursuant to applicable Brazilian procedure, the companies have paid the tax based on their position in the lawsuits and have established a provision for the disputed amounts. As of December 31, 2018, the total amount in dispute was approximately Ps. 5,221,952 (R$ 1,028,000).

• Tax assessments against Claro Brasil and Americel related to the offset of PIS and COFINS credits recorded in the noncumulative method in an amount of Ps. 8,183,429 (approximately R$ 1,611,000) as of December 31, 2018. The Company has not established a provision in the accompanying consolidated financial statements to cover the losses arising from this contingency, which the Company does not consider probable.

F-63

As of September 30, 2018, based on a favorable decision from the Brazilian Supreme Court concerning the exclusion of ICMS from PIS and COFINS, the Company reverted the provision of Ps. 13,034,562 (R$2,566,000).

FUST/FUNTTEL

Anatel has initiated administrative proceedings against Claro Brasil, Americel, Primesys, TdB, BrTel and TVSAT in an aggregate amount of Ps. 14,223,217 (R$ 2,800,000) mainly based on an allegedly improper exclusion of interconnection revenues and costs from the basis used to calculate its Fund for Universal Telecommunication Services (“FUST”) obligations. The companies are contesting these assessments. As of December 31, 2018, the Company has established a provision of Ps. 1,706,786 (R$ 336,000) in the accompanying consolidated financial statements to cover the losses arising from these assessments, which the Company considers probable.

In addition, the Brazilian Ministry of Communications (Ministério das Comunicações) has initiated administrative proceedings against Claro Brasil, Americel, Primesys, TdB, BrTel and TVSAT totaling an amount of Ps. 5,115,278 (R$ 1,007,000) as of December 31, 2018, due to an alleged underpayment of their obligations to the telecommunications Technology Development Fund (“FUNTTEL”). The companies have challenged these assessments and a final resolution is pending. As of December 31, 2018, the Company has established a provision of Ps. 5,080 (R$ 1,000) in the accompanying consolidated financial statements to cover the losses arising from these assessments, which the Company considers probable.

ISS

The Municipal Revenue Services have issued tax assessments against Claro Brasil, Brasil Center and Primesys, totaling an aggregate amount of approximately Ps. 3,637,080 (R$ 716,000) due to the alleged nonpayment of Brazilian Services tax (“ISS”) over several telecommunication services, including Pay TV services, considered as taxable for ISS by these authorities. The companies have challenged the tax assessments on the grounds that the services cited are not subject to ISS tax and a final resolution is pending. As of December 31, 2018, the Company has established a provision of Ps. 25,399 (R$ 5,000) in the accompanying financial statements for the losses arising from these assessments, which the Company considers probable.

TFI

As of December 31, 2018, Anatel fined Claro Brasil and Americel a total of Ps. 13,207,273 (R$ 2,600,000), for an unpaid installation inspection fee (Taxa de Fiscalização de Instalação, or “TFI”) allegedly due for the renovation of radio base stations. Claro Brasil and Americel have challenged the fine, arguing that there was no new equipment installation that could lead to this charge, and a final resolution is pending. The Company has not established a provision in the accompanying consolidated financial statements to cover losses arising from these proceedings, which the Company does not consider probable.

Other Tax Contingencies

There are other several tax contingencies involving Claro Brasil, Americel, TdB and Primesys in an aggregate amount of Ps. 12,394,517 (R$ 2,440,000) related to a variety of taxes and government programs. As of December 31, 2018, the Company has established a provision of Ps. 1,117,538 (R$ 220,000) in the accompanying consolidated financial statements for the losses arising from these contingencies, which the Company considers probable.

F-64

b. Regulatory Matters

Inflation-Related Adjustments

Anatel has challenged the calculation of inflation-related adjustments due under the concession agreements with Tess S.A. (“Tess”), and Algar Telecom Leste S.A. (“ATL”), two of the Company’s subsidiaries that were previously merged into Claro Brasil. Anatel rejected Tess and ATL’s calculation of the inflation-related adjustments applicable to 60% of the concessions price (which was due in three equal annual installments, subject to inflation-related adjustments and interest), claiming that the companies’ calculation of the inflation-related adjustments resulted in a shortfall of the installment payments. The companies have filed declaratory and consignment actions seeking the resolution of the disputes and have obtained injunctions from a federal appeals court suspending payment until the pending appeals are resolved.

The amount of the alleged shortfall as well as the method used to calculate monetary corrections are in dispute. If other methods or assumptions are applied, the amount may increase. In 2018, Anatel calculated the monetary correction in a total amount of Ps. 19,302,937 (R$ 3,800,000). As of December 31, 2018, the Company has established a provision of Ps. 3,419,668 (R$ 673,200) in the accompanying consolidated financial statements for the losses arising from these contingencies, which the Company considers probable.

III. ECUADOR

In 2014, following a regulatory claim filed in 2012 by state-owned operator Corporación Nacional de Telecomunicaciones (“CNT”), the Superintendency of Control of Market Power (Superintendencia de Control del Poder del Mercado, or “SCPM”), imposed a fine of Ps.2,724,113 (US$138,400), on Conecel for alleged monopolistic practices. CNT alleged that Conecel had exclusive rights to deploy its network in five locations and thereby prevented CNT from deploying its own network in the same locations. Conecel challenged the fine before the Administrative Dispute Tribunal (Tribunal de lo Contencioso Administrativo), denying any wrongdoing and contends that CNT had other alternative sites in the same locations where it could have deployed its network.

In 2018, the Administrative Dispute Tribunal (Tribunal de lo Contencioso Administrativo), issued a ruling in favor of Conecel, declaring the fine null and void. The SCPM filed an appeal before the National Court of Justice and the appeal was declared inadmissible by such Court on March 14, 2019; nevertheless, this decision may not be final.

17. Employee Benefits

An analysis of the net liability and net period cost for employee benefits is as follows:

	At December 31,
	2017		2018
Liability:
Mexico	Ps.	84,821,197	Ps.	85,517,190
Puerto Rico		13,962,128		13,986,596
Europe		14,833,840		12,705,926
Brazil		6,276,780		5,666,694
Ecuador		403,194		448,608
Total		Ps. 120,297,139	Ps.	118,325,014

F-65

	For the year ended December 31,
	2016		2017		2018
Net period cost (benefit)
Mexico	Ps.	12,281,154	Ps.	11,586,065	Ps.	12,046,208
Puerto Rico		1,058,131		776,238		686,067
Europe		226,447		385,689		619,039
Brazil		633,159		735,855		579,432
Ecuador		41,380		152,335		58,354
Total	Ps.	14,240,271	Ps.	13,636,182	Ps.	13,989,100

a) Defined benefit plan

The defined benefit obligation (DBO) and plan assets for the pension and other benefit obligation plans, by country, are as follows:

	At December 31
	2017								2018
	DBO		Plan Assets		Effect of asset celling		Net employee benefit liability		DBO		Plan Assets		Effect of asset celling		Net employee benefit liability
Mexico	Ps.	266,304,948	Ps.	(182,539,376)	Ps.	—	Ps.	83,765,572	Ps.	247,997,060	Ps.	(163,404,418)	Ps.	—	Ps.	84,592,642
Puerto Rico		38,711,695		( 24,749,567)		—		13,962,128		35,220,889		( 21,234,293)		—		13,986,596
Brazil		19,369,664		( 20,399,661)		6,519,560		5,489,563		18,795,315		( 19,032,411)		5,087,543		4,850,447
Europe		4,554,912		—		—		4,554,912		4,477,042		—		—		4,477,042
Total	Ps.	328,941,219	Ps.	(227,688,604)	Ps.	6,519,560	Ps.	107,772,175	Ps.	306,490,306	Ps.	(203,671,122)	Ps.	5,087,543	Ps.	107,906,727

F-66

Below is a summary of the actuarial results generated for the pension and retirement plans as well as the medical services in Puerto Rico and Brazil; the pension plans and seniority premiums related to Telmex; the pension plan, the service awards plan and severance in Austria corresponding to the years ended December 31, 2016, 2017 and 2018:

	At December 31, 2016
	DBO			Plan Assets			Effect of asset celling			Net employee benefit
Balance at the beginning of the year	Ps.	314,049,729		Ps.	(212,234,440	)	Ps.	4,823,147		Ps.	106,638,436
Current service cost		4,606,856									4,606,856
Interest cost on projected benefit obligation		27,275,363									27,275,363
Expected return on plan assets					(18,972,042	)					(18,972,042	)
Changes in the asset ceiling during the period and others								875,192			875,192
Past service costs and other					165,851						165,851
Actuarial gain for changes in experience		(28,867	)								(28,867	)
Actuarial loss from changes in financial assumptions		7,784									7,784
Net period cost	Ps.	31,861,136		Ps.	(18,806,191	)	Ps.	875,192		Ps.	13,930,137
Actuarial gain for changes in experience		(20,976,837	)								(20,976,837	)
Actuarial loss from changes in demographic assumptions		397,985									397,985
Actuarial loss from changes in financial assumptions		1,718,189									1,718,189
Changes in the asset ceiling during the period and others								(754,535	)		(754,535	)
Return on plan assets greater than discount rate					(4,724,041	)					(4,724,041	)
Recognized in other comprehensive income	Ps.	(18,860,663	)	Ps.	(4,724,041	)	Ps.	(754,535	)	Ps.	(24,339,239	)
Contributions made by plan participants		255,760			(255,760	)					—
Contributions to the pension plan made by the Company					(2,756,519	)					(2,756,519	)
Benefits paid		(25,694,301	)		25,517,599						(176,702	)
Payments to employees		(525,612	)								(525,612	)
Effect of translation		12,196,546			(9,086,269	)		2,139,414			5,249,691
Others	Ps.	(13,767,607	)	Ps.	13,419,051		Ps.	2,139,414		Ps.	1,790,858
Balance at the end of the year		313,282,595			(222,345,621	)		7,083,218			98,020,192
Less short-term portion		(152,448	)								(152,448	)
Non-current obligation	Ps.	313,130,147		Ps.	(222,345,621)		Ps.	7,083,218		Ps.	97,867,744

F-67

	At December 31, 2017
	DBO			Plan Assets			Effect of asset celling			Net employee benefit liability
Balance at the beginning of the year	Ps.	313,282,595		Ps.	(222,345,621	)	Ps.	7,083,218		Ps.	98,020,192
Current service cost		4,285,693									4,285,693
Interest cost on projected benefit obligation		28,922,385									28,922,385
Expected return on plan assets					(20,916,104	)					(20,916,104	)
Changes in the asset ceiling during the period and others								716,330			716,330
Past service costs and other					53,032						53,032
Actuarial gain for changes in experience		(35,145	)								(35,145	)
Actuarial gain from changes in demographic assumptions		(85	)								(85	)
Actuarial gain from changes in financial assumptions		(4,294	)								(4,294	)
Net period cost	Ps.	33,168,554		Ps.	(20,863,072	)	Ps.	716,330		Ps.	13,021,812
Actuarial loss for changes in experience		11,671,860									11,671,860
Actuarial gain from changes in demographic assumptions		(381,172	)								(381,172	)
Actuarial loss from changes in financial assumptions		2,438,078									2,438,078
Changes in the asset ceiling during the period and others								(856,188	)		(856,188	)
Return on plan assets greater than discount rate					(2,483,430	)					(2,483,430	)
Recognized in other comprehensive income	Ps.	13,728,766		Ps.	(2,483,430	)	Ps.	(856,188	)	Ps.	10,389,148
Contributions made by plan participants		198,713			(198,713	)					—
Contributions to the pension plan made by the Company					(2,697,621	)					(2,697,621	)
Benefits paid		(18,841,754	)		18,841,754						—
Payments to employees		(9,843,743	)								(9,843,743	)
Effect of translation		(2,579,506	)		2,058,099			(423,800	)		(945,207	)
Others	Ps.	(31,066,290	)	Ps.	18,003,519		Ps.	(423,800	)	Ps.	(13,486,571	)
Balance at the end of the year		329,113,625			(227,688,604	)		6,519,560			107,944,581
Less short-term portion		(172,406	)								(172,406	)
Non-current obligation	Ps.	328,941,219		Ps.	(227,688,604)		Ps.	6,519,560		Ps.	107,772,175

F-68

	At December 31, 2018
	DBO			Plan Assests			Effect of asset celling			Net employee benefit liability
Balance at the beginning of the year	Ps.	329,113,625		Ps.	(227,688,604	)	Ps.	6,519,560		Ps.	107,944,581
Current service cost		3,322,813									3,322,813
Interest cost on projected benefit obligation		30,185,257									30,185,257
Expected return on plan assets					(20,804,104	)					(20,804,104	)
Changes in the asset ceiling during the period and others								587,373			587,373
Past service costs and other					157,765						157,765
Actuarial gain for changes in experience		(7,222	)								(7,222	)
Actuarial loss from changes in demographic assumptions		134,625									134,625
Actuarial gain from changes in financial assumptions		(24,890	)								(24,890	)
Net period cost	Ps.	33,610,583		Ps.	(20,646,339	)	Ps.	587,373		Ps.	13,551,617
Actuarial gain for changes in experience		(21,283,470	)								(21,283,470	)
Actuarial loss from changes in demographic assumptions		68,482									68,482
Actuarial gain from changes in financial assumptions		(1,246,539	)								(1,246,539	)
Changes in the asset ceiling during the period and others								(1,055,409	)		(1,055,409	)
Return on plan assets greater than discount rate					23,503,296						23,503,296
Recognized in other comprehensive income	Ps.	(22,461,527	)	Ps.	23,503,296		Ps.	(1,055,409	)	Ps.	(13,640	)
Contributions made by plan participants		173,722			(173,722	)					—
Contributions to the pension plan made by the Company					(1,565,792	)					(1,565,792	)
Benefits paid		(19,546,541	)		19,546,541						—
Payments to employees		(10,651,938	)								(10,651,938	)
Effect of translation		(3,535,477	)		3,353,498			(963,981	)		(1,145,960	)
Others	Ps.	(33,560,234	)	Ps.	21,160,525		Ps.	(963,981	)	Ps.	(13,363,690	)
Balance at the end of the year		306,702,447			(203,671,122	)		5,087,543			108,118,868
Less short-term portion		(212,141	)								(212,141	)
Non-current obligation	Ps.	306,490,306		Ps.	(203,671,122	)	Ps.	5,087,543		Ps.	107,906,727

In the case of other subsidiaries in Mexico, the net period cost (income) of other employee benefits for the years ended December 31, 2016, 2017 and 2018 was Ps. 200,455, Ps. 165,884 and Ps. ( 16,347), respectively. The balance of employee benefits at December 31, 2017 and 2018 was Ps. 1,055,625 and Ps. 924,548, respectively.

In the case of other subsidiaries in Brazil, the net period cost of other employee benefits for the years ended December 31, 2016, 2017 and 2018 was Ps. 65,101, Ps.93,742 and Ps. 98,658, respectively. The balance of employee benefits at December 31, 2017 and 2018 was Ps. 650,815 and Ps. 724,009, respectively.

In the case of Ecuador, the net period cost of other employee benefits for the years ended December 31, 2016, 2017 and 2018 was Ps. 41,380, Ps.152,335 and Ps. 58,354, respectively. The balance of employee benefits at December 31, 2017 and 2018 was Ps. 403,194 and Ps. 448,608, respectively.

F-69

Plan assets are invested in:

	At December 31
	2017						2018
	Puerto Rico		Brazil		Mexico		Puerto Rico		Brazil		Mexico
Equity instruments		37%		6%		61%		37%		—		39%
Debt instruments		61%		88%		39%		60%		94%		61%
Others		2%		6%		—		3%		6%		—
		100%		100%		100%		100%		100%		100%

Included in the Telmex’s net pension plan liability are plan assets of Ps. 182,539,376 and Ps. 163,404,418 as of December 31, 2017 and 2018, respectively, of which 32.0% and 30.4% during 2017 and 2018, respectively, were invested in equity and debt instruments of both América Movil and also of related parties, primarily entities that are under common control of the Company’s principal shareholder. The Telmex pension plan recorded a re-measurement of its defined pension plan of Ps. 12,394,617 and Ps. (1,141,142) during 2017 and 2018, respectively, attributable to a change in actuarial assumptions, and also a decline in the fair value of plan investments from December 31, 2017 to December 31, 2018. The decrease in fair value of the aforementioned related party pension plan investments approximated Ps. 437,663 and Ps. 21,279,760 during the year ended December 31, 2017 and 2018, respectively.

The assumptions used in determining the net period cost were as follows:

	2016											2017									2018
	Puerto Rico			Brazil			Mexico			Europe		Puerto Rico		Brazil			Mexico		Europe		Puerto Rico		Brazil			Mexico		Europe
Discount rate and long- term rate return		4.16	%		10.84	%		10.70	%		1.0%, 1.5% & 1.75%		3.61%		10.18	%		10.70%		1.0%,    1.5% & 2.00%		4.45%		9.10	%		11.81%		1.25%,    1.75% & 2.00%
Rate of future salary increases		3.50	%		4.85	%		4.50	%		3.0.%,      3.9% &   4.4%		2.75%		4.50	%		4.50%		3.0.%,    3.5% & 4.4%		2.75%		4.00	%		3.55%		3.0.%,    3.5% & 4.4%
Percentage of increase in health care costs for the coming year		4.20	%		11.35	%							3.57%		11.00	%						3.87%		10.50	%
Year to which this level will be maintained		N/A			2017								N/A		2028							N/A		2029
Rate of increase of pensions								3.83	%		1.60%							3.83%		1.60%							3.47%		1.60%
Employee turnover rate*											0.0%-1.88%									0.0%-1.72%									0.0%-1.51%

* Depending on years of service

Biometric

Puerto Rico:
Mortality:	RP 2014, MSS 2018 Tables.
Disability:	1985 Pension Disability Table
Brazil:
Mortality:	2000 Basic AT Table for gender
Disability for assets:	UP 84 modified table for gender
Disability retirement:	80 CSO Code Table
Rotation:	Probability of leaving the Company other than death, Disability and retirement is zero

F-70

Europe

Life expectancy in Austria is base on “AVÖ 2018-P – Rechnungsgrundlagen für die Pensionsversicherung – Pagler & Pagler” (2017: “AVÖ 2008-P – Rechnungsgrundlagen für die Pensionsversicherung – Pagler & Pagler”).

Telmex
Mortality:	Mexican 2000 (CNSF) adjusted
Disability:	Mexican Social Security adjusted by Telmex experience
Turnover:	Telmex experience
Retirement:	Telmex experience

For the year ended December 31, 2018, the Company conducted a sensitivity analysis on the most significant variables that affect the DBO, simulating independently, reasonable changes to roughly 100 basis points in each of these variables. The increase (decrease) would have resulted in the DBO pension and other benefits at December 31, 2018 are as follows:

	-100 points			+100 points
Discount rate	Ps.	37,185,664		Ps.	(38,604,684	)
Health care cost trend rate	Ps.	(651,697	)	Ps.	761,278

Telmex Plans

Part of the Telmex´s employees are covered under defined benefit pension plans and seniority premiums. Pension benefits and seniority premiums are determined on the basis of compensation received by the employees in their final year of employment, their seniority, and their age at the time of retirement. Telmex has set up an irrevocable trust fund to finance these employee benefits and has adopted the policy of making contributions to such fund when it is considered necessary.

Defined benefits plan in Austria

Telekom Austria Group provides defined benefits for certain former employees in Austria. All such employees are retired and were employed prior to January 1, 1975. This unfunded plan provides benefits based on a percentage of salary and years employed, not exceeding 80% of the salary before retirement, and taking into consideration the pension provided by the social security system. Telekom Austria Group is exposed to the risk of development of life expectancy and inflation because the benefits from pension plans are lifetime benefits. Furthermore, approximately 7% of the pension benefit obligations at December 31, 2018 relate to the employees of the company Akenes in Lausanne, acquired in 2017.

Service awards in Austria

Civil servants and certain employees (together ‘employees’) are eligible to receive service awards. Under these plans, eligible employees receive a cash bonus of two months’ salary after 25 years of service and four months’ salary after 40 years of service. Employees with at least 35 years of service when retiring (at the age of 65) or who are retiring based on specific legal regulations are eligible to receive four monthly salaries. The compensation is accrued as earned over the period of service, taking into account the employee turnover rate. The risk Telekom Austria Group is exposed to is mainly the risk of development of salary increases and changes of interest rates.

Severance in Austria

Employees starting to work for Telekom Austria Group in Austria on or after 1 January 2003 are covered by a defined contribution plan. Telekom Austria Group paid Ps. 46,084 and Ps. 53,755 (1.53% of the salary) into this defined contribution plan (BAWAG Allianz Mitarbeitervorsorgekasse AG) in 2017 and 2018, respectively.

Severance benefit obligations for employees hired before 1 January 2003, excluding civil servants, are covered by defined benefit plans. Upon termination by Telekom Austria Group or retirement, eligible employees receive severance payments

F-71

equal to a multiple of their monthly compensation which comprises fixed compensation plus variable elements such as overtime or bonuses. Maximum severance is equal to a multiple of twelve times the eligible monthly compensation. In case of death, the heirs of eligible employees receive 50% of the severance benefits. Telekom Austria Group is exposed to the risk of development of salary increases and changes of interest rates.

b) The defined contribution plans (DCP)

Brazil

Claro makes contributions to the DCP through Embratel Social Security Fund—Telos. Contributions are computed based on the salaries of the employees, who decide on the percentage of their contributions to the plan (participants enrolled before October 31st, 2014 is from 3% to 8% and, for those subscribed after that date, the contribution is from 1% to 7% of their salaries). Claro contributes the same percentage as the employee, capped at 8% of the participant’s balance for the employees that are eligible to participate in this plan.

The unfunded liability represents Claro’s obligation for those participants that migrated from the DBP to the DCP. This liability is being paid over a term of 20 years as of January 1, 1999. Unpaid balances are adjusted monthly based on the yield of the asset portfolio at that date and is increased based on the General Price Index of Brazil plus 6 percentage points per year.

At December 31, 2017 and 2018, the balance of the DCP liability was Ps. 136,402 and Ps. 92,238, respectively.

For the years ended December 31, 2016, 2017 and 2018 the cost (income) of labor were Ps. (935), Ps. 374 and Ps. 2,377, respectively.

Europe

In Austria, pension benefits are generally provided by the social security system, for employees, and by the government, for civil servants. The contributions of 12.55% that A1 Telekom Austria Group made in 2017 and 2018 to the social security system and the government in Austria, amount to Ps. 1,309,157 and Ps.1,420,446, respectively. Contributions of the foreign subsidiaries into the respective systems range between 7% and 29% and amount to Ps. 453,641 and Ps. 518,607 in 2017 and 2018, respectively.

Additionally, Telekom Austria Group sponsors a defined contribution plan for employees of some of its Austrian subsidiaries. Telekom Austria Group’s contributions to this plan are based on a percentage of the compensation not exceeding 5%. The annual expenses for this plan amounted to Ps. 258,891, Ps. 256,507 and Ps. 272,453 in 2016, 2017 and 2018, respectively.

As of December 31, 2017 and 2018 the liability related to this defined contribution plan amounted to Ps. 120,892 and Ps. 116,244, respectively.

Other countries

For the rest of the countries where the Company operates and that do not have defined benefit plans or defined contribution plans, the Company makes contributions to the respective governmental social security agencies which are recognized in results of operations as they are incurred.

F-72

Long- term direct employee benefits

Balance at December 31, 2016

Applications

Balance at December 31, 2017

Effect of translation

Increase of the year

Payments

Reversals

Long-term direct employee benefits

Ps.

11,251,499

Ps.

795,581

Ps.

771,274

Ps.

(2,077,632

)

Ps.

(582,686

)

Ps.

10,158,036

Balance at December 31, 2017

Applications

Balance at December 31, 2018

Effect of translation

Increase of the year

Payments

Reversals

Long-term direct employee benefits

Ps.

10,158,036

Ps.

(493,795

)

Ps.

1,750,831

Ps.

(2,079,880

)

Ps.

(1,223,414

)

Ps.

8,111,778

In 2008, a comprehensive restructuring program was initiated in the segment Austria. The provision for restructuring includes future compensation of employees who will no longer provide services for Telekom Austria Group but who cannot be laid off due to their status as civil servants. These employment contracts are onerous contracts under IAS 37, as the unavoidable cost related to the contractual obligation exceeds the future economic benefit. The restructuring program also includes social plans for employees whose employments will be terminated in a socially responsible way. In 2009 and every year from 2011 to 2018, new social plans were initiated which provide for early retirement, special severance packages and golden handshake options. Due to their nature as termination benefits, these social plans are accounted for according to IAS 19.

18. Financial Assets and Liabilities

Set out below is the categorization of the financial instruments, excluding cash and cash equivalents, held by the Company as of December 31, 2017 and 2018:

	December 31, 2017
	Loans and Receivables		Fair value through profit or loss		Fair value through OCI
Financial Assets:
Equity investments at fair value through OCI and other short term investments	Ps.	12,438,019	Ps.	—	Ps.	46,682,657
Accounts receivable from subscribers, distributors, contractual assets and other		163,085,537		—		—
Related parties		868,230		—		—
Derivative financial instruments		—		8,037,384		—
Total	Ps.	176,391,786	Ps.	8,037,384	Ps.	46,682,657
Financial Liabilities:
Debt	Ps.	697,884,899	Ps.	—	Ps.	—
Accounts payable		212,673,407		—		—
Related parties		2,540,412		—		—
Derivative financial instruments		—		14,359,460		—
Total	Ps.	913,098,718	Ps.	14,359,460	Ps.	—

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	December 31, 2018
	Loans and Receivables		Fair value through profit or loss		Fair value through OCI
Financial Assets:
Equity investments at fair value through OCI and other short term investments	Ps.	9,987,851	Ps.	—	Ps.	39,028,083
Accounts receivable from subscribers, distributors, contractual assets and other		185,202,494		—		—
Related parties		1,263,605		—		—
Derivative financial instruments		—		5,287,548		—
Total	Ps.	196,453,950	Ps.	5,287,548	Ps.	39,028,083
Financial Liabilities:
Debt	Ps.	638,922,453	Ps.	—	Ps.	—
Accounts payable		221,957,267		—		—
Related parties		2,974,213		—		—
Derivative financial instruments		—		17,107,579		—
Total	Ps.	863,853,933	Ps.	17,107,579	Ps.	—

Fair value hierarchy

The Company’s valuation techniques used to determine and disclose the fair value of its financial instruments are based on the following hierarchy:

Level 1: Quoted prices (unadjusted) in active markets for identical assets or liabilities;

Level 2: Variables other than quoted prices in Level 1 that are observable for the asset or liability, either directly (prices) or indirectly (derived from prices); and

Level 3: Variables used for the asset or liability that are not based on any observable market data (non-observable variables).

The fair value for the financial assets (excluding cash and cash equivalents) and financial liabilities shown in the consolidated statements of financial position at December 31, 2017 and 2018 is as follows:

	Measurement of fair value at December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Equity investments at fair value through OCI and other short-term investments	Ps.	46,682,657	Ps.	12,438,019	Ps.	—	Ps.	59,120,676
Derivative financial instruments		—		8,037,384		—		8,037,384
Pension plan assets		218,518,358		9,039,270		130,976		227,688,604
Total	Ps.	265,201,015	Ps.	29,514,673	Ps.	130,976	Ps.	294,846,664
Liabilities:
Debt	Ps.	691,769,785	Ps.	63,147,153	Ps.	—	Ps.	754,916,938
Derivative financial instruments		—		14,359,460		—		14,359,460
Total	Ps.	691,769,785	Ps.	77,506,613	Ps.	—	Ps.	769,276,398

F-74

	Measurement of fair value at December 31, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Equity investments at fair value through OCI and other short-term investments	Ps.	39,028,083	Ps.	9,987,851	Ps.	—	Ps.	49,015,934
Derivative financial instruments		—		5,287,548		—		5,287,548
Pension plan assets		186,557,731		17,096,344		17,047		203,671,122
Total	Ps.	225,585,814	Ps.	32,371,743	Ps.	17,047	Ps.	257,974,604
Liabilities:
Debt	Ps.	594,713,342	Ps.	99,723,251	Ps.	—	Ps.	694,436,593
Derivative financial instruments				17,107,579		—		17,107,579
Total	Ps.	594,713,342	Ps.	116,830,830	Ps.	—	Ps.	711,544,172

Fair value of derivative financial instruments is valued using valuation techniques with market observable inputs. To determine its Level 2 fair value, the Company applies different valuation techniques including forward pricing and swaps models, using present value calculations. The models incorporate various inputs including credit quality of counterparties, foreign exchange spot and forward rates and interest rate curves. Fair value of debt Level 2 has been determined using a model based on present value calculation incorporating credit quality of AMX. The Company’s investment in equity investments at fair value, specifically the investment in KPN, is valued using the quoted prices (unadjusted) in active markets for identical assets. The net realized gain related to derivative financial instruments for the years ended December 31, 2017 and 2018 was Ps. 1,515,668 and Ps. 5,286,290, respectively.

For the years ended December 31, 2016, 2017 and 2018, no transfers were made between Level 1 and Level 2 fair value measurement hierarchies.

Changes in liabilities arising from financing activities

	At January 1, 2017		Cash flow			Foreign currency exchange and other			At December 31, 2017
Total liabilities from financing activities	Ps.	707,801,403	Ps.	(27,433,489	)	Ps.	17,516,985		Ps.	697,884,899
	At January 1, 2018		Cash flow			Foreign currency exchange and other			At December 31, 2018
Total liabilities from financing activities	Ps.	697,884,899	Ps.	(34,050,923	)	Ps.	(24,911,523	)	Ps.	638,922,453

19. Shareholders’ Equity

a) Pursuant to the Company’s bylaws, the capital stock of the Company consists of a minimum fixed portion of Ps. $270,049 (nominal amount), represented by a total of 71,063,212,170 shares (including treasury shares available for placement in accordance with the provisions of the Ley del Mercado de Valores), of which (i) 20,601,632,660 are “AA” shares (full voting rights); (ii) 558,677,704 are “A” shares (full voting rights); and (iii) 49,902,901,806 are “L” shares (limited voting rights).

b) As of December 31, 2018 and 2017, the Company’s capital structure was represented by 66,034,792,526 (20,601,632,660 “AA” shares, 546,112,938 “A” shares and 44,887,046,928 “L” shares), and 66,069,035,539 (20,601,632,660 “AA” shares, 566,661,526 “A” shares and 44,900,741,353 “L” shares), respectively, not including treasury shares.

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c) As of December 31, 2018 and 2017, the Company’s treasury held for placement in accordance with the provisions of the Ley del Mercado de Valores and the Disposiciones de carácter general aplicables a las emisoras de valores y a otros participantes en el Mercado de valores issued by the Comisión Nacional Bancaria y de Valores, a total amount of 5,028,419,644 shares (5,028,399,396 “L” shares and 20,248 “A” shares); and 29,420,688,657 shares (29,419,120,359 “L” shares and 1,568,298 “A” shares), respectively, all acquired pursuant to the Company’s share repurchase program.

d) The holders of “AA” and “A” shares are entitled to full voting rights. The holders of “L” shares may only vote in limited circumstances, and they are only entitled to appoint two members of the Board of Directors and their respective alternates. The matters in which “L” shares holders are entitled to vote are the following: extension of the Company´s corporate life, dissolution of the Company, change of Company’s corporate purpose, change of nationality of the Company, transformation of the Company, a merger with another company, any transaction representing 20% or more of the Company’s consolidated assets, as well as the cancellation of the inscription of the shares issued by the Company at the Registro Nacional de Valores and any other foreign stock exchanges where they may be registered, except for quotation systems or other markets not organized as stock exchanges. Within their respective series, all shares confer the same rights to their holders.

The Company’s bylaws contain restrictions and limitations related to the subscription and acquisition of “AA” shares by non-Mexican investors.

e) Pursuant to the Company’s bylaws, “AA” shares must at all times represent no less than 20% and no more than 51% of the Company’s capital stock, and they shall also represent at all times, no less than 51% of the common shares (entitled to full voting rights, represented by “AA” and “A” shares) representing said capital stock.

“A” shares, which may be freely subscribed, must not represent more than 19.6% of capital stock and must not exceed 49% of the common shares representing such capital. Common shares (entitled to full voting rights, represented by “AA” and “A” shares), must represent no more than 51% of the Company’s capital stock.

Lastly, “L” shares which have limited voting rights and may be freely subscribed may not exceed, along with “A” shares, 80% of the Company’s capital stock. For purposes of determining these restrictions, the percentages mentioned above refer only to the number of the Company’s shares outstanding.

Dividends

On April 16, 2018, the Company’s shareholders approved, among other resolutions, the payment of a dividend of Ps. $0.32 (thirty-two peso cents) per share to each of the shares series of its capital stock “AA”, “A” and “L”. Such dividend was paid in two installments of Ps. $0.16 (sixteen peso cents) each, on July 16 and November 12, 2018 respectively.

On April 5, 2017, the Company’s shareholders approved, among other resolutions, the payment of a dividend of Ps. $0.30 (thirty peso cents) per share to each of the shares series of its capital stock “AA”, “A” and “L”, such dividend was payable, at each share holders’ election, in cash, “L” series shares or a combination thereof, in two installments of Ps. $0.15 (fifteen peso cents) each, on July 17 and November 13, 2017 respectively. As a result of the shareholders elections, on July 17, 2017 and November 13, 2017, AMX placed into circulation 325,264,125 and 16,905,414 series “L” shares, respectively.

Legal Reserve

According to the Ley General de Sociedades Mercantiles, companies must allocate from the net profit of each year, at least 5% to increase the legal reserve until it reaches 20% of its capital stock. This reserve may not be distributed to shareholders during the existence of the Company, except as a stock dividend. As of December 31, 2018 and 2017, the legal reserve amounted Ps. 358,440.

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Restrictions on Certain Transactions

Pursuant to the Company’s bylaws any transfer of more than 10% of the full voting shares (“A” shares and “AA” shares), effected in one or more transactions by any person or group of persons acting in concert, requires prior approval by our Board of Directors. If the Board of Directors denies such approval, however, the Company bylaws require it to designate an alternate transferee, who must pay market price for the shares as quoted on the Bolsa Mexicana de Valores, S.A.B. de C.V.

Payment of Dividends

Dividends, either in cash or in kind, paid with respect to the “A” Shares, “L” Shares, “A” Share ADSs or “L” Share ADSs will generally be subject to a 10% Mexican withholding tax (provided that no Mexican withholding tax will apply to distributions of net taxable profits generated before 2015). Nonresident holders could be subject to a lower tax rate, to the extent that they are eligible for benefits under an income tax treaty to which Mexico is a party.

Earnings per Share

The following table shows the computation of the basic and diluted earnings per share:

	For the years ended December 31,
	2016		2017		2018
Net profit for the period attributable to equity holders of the parent	Ps.	8,649,427	Ps.	29,325,921	Ps.	52,566,197
Weighted average shares (in millions)		65,693		65,909		66,055
Earnings per share attributable to equity holders of the parent		0.13		0.44		0.79

Subordinated Perpetual Fixed Rate Bond

On January 3, 2018, the Company decided to call and redeem the Telekom Austria subordinated perpetual Fixed Rate Bond (hybrid bond) amounting to 600 million of Euros, according to the terms and conditions of the bond, at its nominal value plus all interest on February 1, 2018, the first call date. The Company paid an amount of Ps 13,440,120.

20. Components of other comprehensive (loss) income

The movement on the components of the other comprehensive (loss) income for the years ended December 31, 2016, 2017 and 2018 is as follows:

	For the years ended December 31,
	2016			2017			2018
Controlling interest:
Valuation of the derivative financial instruments, net of deferred taxes	Ps.	48,496		Ps.	12,292		Ps.	—
Unrealized (loss) gain on equity investments at fair value, net of deferred taxes		(6,673,731	)		622,424			(3,765,688	)
Translation effect of foreign entities		104,178,880			(21,683,333	)		(61,223,458	)
Remeasurement of defined benefit plan, net of deferred taxes		14,771,770			(7,075,606	)		652,722
Non-controlling interest of the items above		3,322,090			3,402,973			(2,986,018	)
Other comprehensive (loss) income	Ps.	115,647,505		Ps.	(24,721,250	)	Ps.	(67,322,442	)

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21. Valuation of derivatives, interest cost from labor obligations and other financial items, net

For the years ended December 31, 2016, 2017 and 2018, valuation of derivatives and other financial items are as follows:

	For the years ended December 31,
	2016			2017			2018
Controlling interest:
(Loss) gain in valuation of derivatives, net	Ps.	(9,622,233	)	Ps.	8,192,567		Ps.	(4,686,407	)
Capitalized interest expense (Note 10 d)		2,861,307			2,875,034			2,020,288
Commissions		(2,034,972	)		(1,263,701	)		(1,901,473	)
Interest cost of labor obligations (Note 17)		(9,178,513	)		(8,722,611	)		(9,968,526	)
Interest expense on taxes		(245,922	)		(1,503,981	)		(555,921	)
Dividend received (Note 4)		5,740,092			2,385,559			2,605,333
Gain on net monetary positions (Note 2i, c)		—			—			4,429,145
Other financial cost		(3,745,600	)		(3,906,627	)		(2,118,755	)
Total	Ps.	(16,225,841	)	Ps.	(1,943,760	)	Ps.	(10,176,316	)

22. Segments

América Móvil operates in different countries. As mentioned in Note 1, the Company has operations in Mexico, Guatemala, Nicaragua, Ecuador, El Salvador, Costa Rica, Brazil, Argentina, Colombia, United States, Honduras, Chile, Peru, Paraguay, Uruguay, Dominican Republic, Puerto Rico, Panama, Austria, Croatia, Bulgaria, Belarus, Macedonian, Serbia and Slovenia. The accounting policies for the segments are the same as those described in Note 2.

The Chief Executive Officer, who is the Chief Operating Decision Maker (“CODM”), analyzes the financial and operating information by operating segment. All operating segments that (i) represent more than 10% of consolidated revenues, (ii) more than the absolute amount of its reported 10% of profits before income tax or (iii) more than 10% of consolidated assets, are presented separately.

The Company presents the following reportable segments for the purposes of its consolidated financial statements: Mexico (includes Telcel and Corporate operations and assets), Telmex (Mexico), Brazil, Southern Cone (includes Argentina, Chile, Paraguay and Uruguay), Central America (includes Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica and Panama), U.S.A. (excludes Puerto Rico), Caribbean (includes Dominican Republic and Puerto Rico), and Europe (includes Austria, Bulgaria, Croatia, Belarus, Slovenia, Macedonia and Serbia).

The segment Southern Cone comprises mobile communication services in Argentina as well as Chile, Paraguay and Uruguay. In 2018, hyperinflation accounting in accordance with IAS 29 was initially applied to Argentina, which results in the restatement of non-monetary assets, liabilities and all items of the statements of comprehensive income for the change in a general price index and the translation of these items applying the year-end exchange rate. In accordance with IFRS comparative amounts for 2016 and 2017 were not restated.

The Company considers that the quantitative and qualitative aspects of any aggregated operating segments (that is, Central America and Caribbean reportable segments) are similar in nature for all periods presented. In evaluating the appropriateness of aggregating operating segments, the key indicators considered included but were not limited to: (i) the similarity of key financial statements measures and trends, (ii) all entities provide telecommunications services, (iii) similarities of customer base and services, (iv) the methods to distribute services are the same, based on telephone plant in both cases, wireless and fixed lines, (v) similarities of governments and regulatory entities that oversee the activities and services of telecom companies, (vi) inflation trends, and (vii) currency trends.

F-78

	Mexico		Telmex		Brazil			Southern Cone			Colombia			Andean		Central America		U.S.A.		Caribbean		Europe			Eliminations			Consolidated total
At December 31 2016 (in Ps.):
External revenues		187,127,903		93,343,612		193,796,237			71,553,356			67,330,768			55,825,972		42,131,666		140,856,365		36,467,781		86,978,828			—			975,412,488
Intersegment revenues		16,438,858		8,872,248		3,560,388			776,719			257,767			304,834		289,465		—		30,210		—			(30,530,489	)		—
Total revenues		203,566,761		102,215,860		197,356,625			72,330,075			67,588,535			56,130,806		42,421,131		140,856,365		36,497,991		86,978,828			(30,530,489	)		975,412,488
Depreciation and amortization		16,451,496		17,150,013		47,170,935			9,739,634			11,283,749			7,764,474		10,474,681		1,073,623		5,225,498		22,525,050			(333,232	)		148,525,921
Operating income		48,219,505		12,275,892		6,325,323			8,317,053			11,209,959			6,086,638		3,830,974		1,220,601		6,143,183		5,388,595			592,587			109,610,310
Interest income		28,659,372		303,915		3,747,684			2,649,539			104,304			944,945		462,779		239,797		691,132		286,784			(33,897,656	)		4,192,595
Interest expense		32,004,944		1,135,552		22,970,335			5,049,457			1,079,989			1,147,380		411,597		—		143,322		2,953,033			(33,033,597	)		33,862,012
Income tax		2,502,242		921,803		(4,294,040	)		2,021,090			4,456,750			1,768,066		3,291,776		767,295		2,542,080		(2,578,206	)		—			11,398,856
Equity interest in net income (loss) of associated companies		67,472		116,368		(270	)		(23,319	)		—			—		171		—		—		29,528			—			189,950
Net profit (loss) attributable to equity holders of the parent		378,150		902,282		(10,357,493	)		3,765,015			4,022,633			3,621,863		538,890		987,790		3,318,960		7,065,769			(5,594,432	)		8,649,427
Assets by segment		1,070,598,204		161,133,722		461,831,754			140,617,162			103,361,235			113,839,981		80,832,029		42,812,349		93,941,695		227,288,156			(981,214,013	)		1,515,042,274
Plant, property and equipment, net		64,893,242		112,220,236		203,270,555			67,023,143			59,690,886			37,716,772		41,808,573		1,949,166		33,854,428		78,763,065			—			701,190,066
Goodwill		27,186,328		213,926		26,106,622			3,006,448			14,659,891			5,948,335		5,652,268		3,464,217		14,186,723		52,207,877			—			152,632,635
Trademarks, net		615,318		307,881		366,727			—			194			—		—		788,228		284,665		10,203,880			—			12,566,893
Licenses and rights, net		5,887,092		42,867		41,496,209			8,760,860			4,603,793			12,882,210		3,993,120		—		7,694,798		30,670,315			—			116,031,264
Investment in associated companies		7,605,220		2,218,824		699			81,284			470			—		17,390		—		—		1,072,778			(7,393,181	)		3,603,484
Liabilities by segments		798,044,609		117,663,161		349,915,118			124,149,687			40,811,337			52,949,608		38,095,161		41,369,767		44,790,656		121,928,202			(485,698,799	)		1,244,018,507
At December 31, 2017 (in Ps.):
External revenues		190,022,612		89,731,238		210,536,673			81,092,885			72,435,460			56,393,595		44,094,835		148,589,487		35,092,578		93,644,172			—			1,021,633,535
Intersegment revenues		16,748,428		8,753,525		4,785,601			1,250,983			304,555			177,856		187,086		44		122,656		—			(32,330,734	)		—
Total revenues		206,771,040		98,484,763		215,322,274			82,343,868			72,740,015			56,571,451		44,281,921		148,589,531		35,215,234		93,644,172			(32,330,734	)		1,021,633,535
Depreciation and amortization		17,030,251		18,902,238		51,486,652			10,639,591			12,373,790			8,328,705		9,668,439		1,594,727		5,349,757		25,222,962			(422,170	)		160,174,942
Operating income (loss)		50,666,028		7,921,524		11,601,369			11,676,427			(4,704,165	)		5,650,477		5,252,401		2,915,123		4,752,168		4,523,857			(111,906	)		100,143,303
Interest income		30,083,437		619,748		3,792,242			2,884,613			211,521			1,793,974		1,064,992		394,196		1,111,980		307,021			(39,338,076	)		2,925,648
Interest expense		32,185,868		1,028,593		23,578,083			4,637,989			1,955,688			1,573,929		485,684		—		377,727		2,035,716			(37,558,496	)		30,300,781
Income tax		18,142,482		387,145		(2,991,377	)		3,535,302			(1,874,594	)		1,806,085		2,025,618		1,803,555		3,529,253		(1,417,358	)		(4,600	)		24,941,511
Equity interest in net income (loss) of associated companies		99,044		16,564		(232	)		(9,801	)		—			—		—		—		—		(14,190	)		—			91,385
Net profit (loss) attributable to equity holders of the parent		26,321,442		184,387		(6,617,381	)		4,421,938			(6,209,530	)		1,595,382		3,713,301		1,793,875		1,262,073		5,656,132			(2,795,698	)		29,325,921
Assets by segment		1,033,036,406		170,402,561		428,281,963			133,136,177			108,362,023			113,478,626		81,529,691		40,761,830		88,672,466		203,858,243			(915,308,134	)		1,486,211,852
Plant, property and equipment, net		59,137,555		109,713,770		187,459,628			69,006,093			57,060,931			35,930,966		39,050,481		1,693,642		32,173,524		85,116,608			—			676,343,198
Goodwill		27,102,384		213,926		24,708,739			3,073,444			13,981,033			6,113,495		5,597,990		3,341,956		14,186,723		53,143,542			—			151,463,232
Trademarks, net		406,723		274,786		246,557			—			—			—		—		631,024		262,641		8,116,076			—			9,937,807
Licenses and rights, net		11,457,720		13,175		35,662,305			8,885,086			4,197,498			11,295,202		3,376,106		—		7,276,039		31,141,255			—			113,304,386
Investment in associated companies		469,662		546,872		640			63,110			451			—		16,999		—		—		806,950			1,830,488			3,735,172
Liabilities by segments		794,598,013		133,428,178		322,620,030			119,123,646			54,756,152			48,656,628		35,501,900		38,249,957		43,978,410		119,240,533			(484,575,112	)		1,225,578,335

F-79

At December 31, 2018 (in Ps.):
External revenues	207,610,244		86,339,289		188,712,666		89,149,978		75,460,428	55,633,192	44,883,585	153,266,315	36,435,541	100,716,443		—		1,038,207,681
Intersegment revenues	16,946,543		9,741,908		4,593,760		13,200,358		344,517	154,082	149,445	—	204,294	—		(45,334,907	)	—
Total revenues	224,556,787		96,081,197		193,306,426		102,350,336		75,804,945	55,787,274	45,033,030	153,266,315	36,639,835	100,716,443		(45,334,907	)	1,038,207,681
Depreciation and amortization	17,619,342		18,358,248		42,857,751		13,526,361		13,464,867	8,516,960	8,940,655	1,545,395	5,036,831	26,838,972		(992,802	)	155,712,580
Operating income (loss)	57,450,599		8,085,764		23,494,903		16,975,797		14,388,552	5,003,915	4,867,763	2,665,270	5,811,846	4,731,562		(3,918,800	)	139,557,171
Interest income	26,578,280		420,380		11,303,888		2,251,474		1,013,839	1,666,879	1,566,086	559,548	1,458,874	122,133		(36,295,212	)	10,646,169
Interest expense	32,526,258		1,153,913		20,377,191		4,338,941		2,913,881	1,719,663	509,081	—	561,867	1,973,431		(34,302,793	)	31,771,433
Income tax	28,842,505		643,377		4,026,444		1,390,039		2,251,877	2,498,666	2,533,600	810,898	2,774,204	707,093		(1,624	)	46,477,079
Equity interest in net income (loss) of associated companies	(5,962	)	44,965		(152	)	(20,871	)	—	—	—	—	—	(17,713	)	—		267
Net profit (loss) attributable to equity holders of the parent	23,185,029		(2,201,572	)	3,530,653		6,065,703		9,165,801	1,730,933	2,821,733	2,820,505	3,644,697	3,809,694		(2,006,979	)	52,566,197
Assets by segment	970,564,314		174,461,398		390,791,480		127,946,573		111,975,598	96,347,779	81,640,157	38,814,907	102,531,547	186,135,358		(851,985,719	)	1,429,223,392
Plant, property and equipment, net	56,056,634		103,737,293		173,197,708		62,988,635		51,422,548	35,800,477	37,146,601	1,356,237	38,011,242	80,421,642		(138,297	)	640,000,720
Goodwill	27,104,632		215,381		21,388,124		2,796,759		12,770,380	5,242,365	5,466,871	3,328,533	14,186,723	53,066,729		—		145,566,497
Trademarks, net	227,774		243,556		124,910		—		—	—	—	507,033	249,984	3,313,948		—		4,667,205
Licenses and rights, net	10,573,147		—		25,873,910		12,555,496		3,400,235	9,651,582	3,605,416	—	10,294,336	27,344,273		—		103,298,395
Investment in associated companies	5,621,661		563,667		543		20,697		412	—	24,262	—	—	748,674		(3,847,209	)	3,132,707
Liabilities by segments	748,965,728		136,993,838		298,308,084		94,550,901		56,211,438	50,064,761	28,592,953	35,552,678	58,716,154	117,214,746		(441,820,311	)	1,183,350,970

F-80

23. Recently Issued Accounting Standards

New standards, amendments and interpretations not yet effective

The estimated impact and evaluation of the recently issued accounting standards not yet in effect as of December 31, 2018 are as follow:

IFRS 16, Leases

In January 2016, the IASB issued the new accounting standard, IFRS 16 Leases. The fundamental changes in this new standard affect the lessees’ recognition of leases in the financial statements. Generally, all leases have to be recognized based on the “right of use approach”.

IFRS 16 replaces IAS 17 Leases, IFRIC 4 Determining whether an Arrangement contains a Lease, SIC-15 Operating Leases- Incentives and SIC-27 Evaluating the Substance of Transactions Involving the Legal Form of a Lease. IFRS 16 sets out the principles for the recognition, measurement, presentation and disclosure of leases and requires lessees to account for all leases under a single on-balance sheet model similar to the accounting for finance leases under IAS 17. The standard includes two recognition exemptions for lessees – leases of ’low-value’ assets (e.g., personal computers) and short-term leases (i.e., leases with a lease term of 12 months or less). At the commencement date of a lease, a lessee will recognize a liability to make lease payments (i.e., the lease liability) and an asset representing the right to use the underlying asset during the lease term (i.e., the right-of-use asset). Lessees will be required to separately recognize the interest expense on the lease liability and the depreciation expense on the right-of-use asset.

Lessees will be also required to remeasure the lease liability upon the occurrence of certain events (e.g., a change in the lease term, a change in future lease payments resulting from a change in an index or rate used to determine those payments). The lessee will generally recognize the amount of the remeasurement of the lease liability as an adjustment to the right-of-use asset.

Lessor accounting under IFRS 16 is substantially unchanged from today’s accounting under IAS 17. Lessors will continue to classify all leases using the same classification principle as in IAS 17 and distinguish between two types of leases: operating and finance leases.

IFRS 16, which is effective for annual periods beginning on January 1, 2019, requires lessees and lessors to make more extensive disclosures than under IAS 17.

Transition to IFRS 16

The Company will adopt the IFRS 16 using the modified retrospectively method with the date of initial applications on January 1, 2019. Moreover, the Company will apply the new requirements regarding IFRS 16 to all contracts identified as leases under the current accounting standard and reassessed all services, in order to identify lease components or an implicit accounting lease within these contracts.

The Company will elect to use the exemptions applicable to the standard on lease contracts for which the lease terms ends within 12 months as of the date of initial application, and lease contracts for which the underlying asset is of low value. The Company has leases of certain office equipment (i.e., personal computers, printing and photocopying machines, mainly) that are considered low value assets.

The Company identified a significant number of lease assets such as towers, physical facilities (office buildings, stores and sites, mainly), circuits, among others. The implementation of IFRS 16 required a significant effort due to the fact of the need to make certain estimates, such as the leases term, based on the non-cancelable period and the periods covered by options to extend the lease. AMX extended the lease terms beyond the non-cancelable period only when it was reasonably certain to extend it. The reasonability of the extension is affected on several factors, such as regulation, business model, and geographical business strategies.

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AMX expects that the changes in the implementation of IFRS 16 will have a significant impact on its financial statements from the date of adoption. The Company expects that the opening balances at the date of initial application will increase in right of use assets and lease liabilities between Ps.113,000,000 and Ps.132,000,000 without a material impact in equity.

Estimated initial impact are based on the assessment conducted to date and could have a difference because of the lease borrowing rate and the volume of contracts considered in the implementation process. The new accounting policies will not be final until the Company presents its first financial statements subsequent to the effective date of IFRS 16.

IFRS 17 Insurance Contracts

In May 2017, the IASB issued IFRS 17 Insurance Contracts (IFRS 17), a comprehensive new accounting standard for insurance contracts covering recognition and measurement, presentation and disclosure. Once effective, IFRS 17 will replace IFRS 4 Insurance Contracts (IFRS 4) that was issued in 2005. IFRS 17 applies to all types of insurance contracts (i.e., life, non-life, direct insurance and re-insurance), regardless of the type of entities that issue them, as well as to certain guarantees and financial instruments with discretionary participation features. A few scope exceptions will apply. The overall objective of IFRS 17 is to provide an accounting model for insurance contracts that is more useful and consistent for insurers. In contrast to the requirements in IFRS 4, which are largely based on grandfathering previous local accounting policies, IFRS 17 provides a comprehensive model for insurance contracts, covering all relevant accounting aspects. The core of IFRS 17 is the general model, supplemented by:

• A specific adaptation for contracts with direct participation features (the variable fee approach)

• A simplified approach (the premium allocation approach) mainly for short-duration contracts

IFRS 17 is effective for reporting periods beginning on or after 1 January 2021, with comparative figures required.

Early application is permitted, provided the entity also applies IFRS 9 and IFRS 15 on or before the date it first applies IFRS 17.

The company is evaluating the effects, however, it does not expect the adoption of this standard to have a significant impact.

IFRIC Interpretation 23 Uncertainty over Income Tax Treatment

The Interpretation addresses the accounting for income taxes when tax treatments involve uncertainty that affects the application of IAS 12 and does not apply to taxes or levies outside the scope of IAS 12, nor does it specifically include requirements relating to interest and penalties associated with uncertain tax treatments.

The Interpretation specifically addresses the following:

• Whether an entity considers uncertain tax treatments separately

• The assumptions an entity makes about the examination of tax treatments by taxation authorities

• How an entity determines taxable profit (tax loss), tax bases, unused tax losses, unused tax credits and tax rates

• How an entity considers changes in facts and circumstances

An entity has to determine whether to consider each uncertain tax treatment separately or together with one or more other uncertain tax treatments. The approach that better predicts the resolution of the uncertainty should be

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followed. The interpretation is effective for annual reporting periods beginning on or after 1 January 2019, but certain transition reliefs are available. The Company will apply the interpretation from its effective date. The Company will establish the processes and procedures to obtain the necessary information to apply the Interpretation in a timely manner.

The company estimates that the adoption of this standard will not have a significant impact on its consolidated financial statements.

Amendments to IFRS 9: Prepayment Features with Negative Compensation

Under IFRS 9, a debt instrument can be measured at amortized cost or at fair value through other comprehensive income, provided that the contractual cash flows are ‘solely payments of principal and interest on the principal amount outstanding’ (the SPPI criterion) and the instrument is held within the appropriate business model for that classification. The amendments to IFRS 9 clarify that a financial asset passes the SPPI criterion regardless of the event or circumstance that causes the early termination of the contract and irrespective of which party pays or receives reasonable compensation for the early termination of the contract.

The amendments should be applied retrospectively and are effective from 1 January 2019, with earlier application permitted. These amendments have no impact on the consolidated financial statements of the Company.

Amendments to IFRS 10 and IAS 28: Sale or Contribution of Assets between an Investor and its Associate or Joint Venture

The amendments address the conflict between IFRS 10 and IAS 28 in dealing with the loss of control of a subsidiary that is sold or contributed to an associate or joint venture. The amendments clarify that the gain or loss resulting from the sale or contribution of assets that constitute a business, as defined in IFRS 3, between an investor and its associate or joint venture, is recognized in full. Any gain or loss resulting from the sale or contribution of assets that do not constitute a business, however, is recognized only to the extent of unrelated investors’ interests in the associate or joint venture. The IASB has deferred the effective date of these amendments indefinitely, but an entity that early adopts the amendments must apply them prospectively. The Company will apply these amendments when they become effective.

Amendments to IAS 19: Plan Amendment, Curtailment or Settlement

The amendments to IAS 19 address the accounting when a plan amendment, curtailment or settlement occurs during a reporting period. The amendments specify that when a plan amendment, curtailment or settlement occurs during the annual reporting period, an entity is required to:

• Determine current service cost for the remainder of the period after the plan amendment, curtailment or settlement, using the actuarial assumptions used to remeasure the net defined benefit liability (asset) reflecting the benefits offered under the plan and the plan assets after that event.

• Determine net interest for the remainder of the period after the plan amendment, curtailment or settlement using: the net defined benefit liability (asset) reflecting the benefits offered under the plan and the plan assets after that event; and the discount rate used to remeasure that net defined benefit liability (asset).

The amendments also clarify that an entity first determines any past service cost, or a gain or loss on settlement, without considering the effect of the asset ceiling. This amount is recognized in profit or loss.

An entity then determines the effect of the asset ceiling after the plan amendment, curtailment or settlement. Any change in that effect, excluding amounts included in the net interest, is recognized in other comprehensive income.

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The amendments apply to plan amendments, curtailments, or settlements occurring on or after the beginning of the first annual reporting period that begins on or after 1 January 2019, with early application permitted. These amendments will apply only to any future plan amendments, curtailments, or settlements of the Company.

Amendments to IAS 28: Long-term interests in associates and joint ventures

The amendments clarify that an entity applies IFRS 9 to long-term interests in an associate or joint venture to which the equity method is not applied but that, in substance, form part of the net investment in the associate or joint venture (long-term interests). This clarification is relevant because it implies that the expected credit loss model in IFRS 9 applies to such long-term interests.

The amendments also clarified that, in applying IFRS 9, an entity does not take account of any losses of the associate or joint venture, or any impairment losses on the net investment, recognized as adjustments to the net investment in the associate or joint venture that arise from applying IAS 28 Investments in Associates and Joint Ventures.

The amendments should be applied retrospectively and are effective from 1 January 2019, with early application permitted. Since the Company does not have such long-term interests in its associate and joint venture, the amendments will not have an impact on its consolidated financial statements.

Annual Improvements 2015-2017 Cycle (issued in December 2017)

These improvements include:

• IFRS 3 Business Combinations

The amendments clarify that, when an entity obtains control of a business that is a joint operation, it applies the requirements for a business combination achieved in stages, including remeasuring previously held interests in the assets and liabilities of the joint operation at fair value. In doing so, the acquirer remeasures its entire previously held interest in the joint operation.

An entity applies those amendments to business combinations for which the acquisition date is on or after the beginning of the first annual reporting period beginning on or after 1 January 2019, with early application permitted.

These amendments will apply on future business combinations of the Company.

• IFRS 11 Joint Arrangements

A party that participates in, but does not have joint control of, a joint operation might obtain joint control of the joint operation in which the activity of the joint operation constitutes a business as defined in IFRS 3. The amendments clarify that the previously held interests in that joint operation are not remeasured.

An entity applies those amendments to transactions in which it obtains joint control on or after the beginning of the first annual reporting period beginning on or after 1 January 2019, with early application permitted. These amendments are currently not applicable to the Company but may apply to future transactions.

• IAS 12 Income Taxes

The amendments clarify that the income tax consequences of dividends are linked more directly to past transactions or events that generated distributable profits than to distributions to owners. Therefore, an entity recognizes the income tax consequences of dividends in profit or loss, other comprehensive income or equity according to where the entity originally recognized those past transactions or events.

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An entity applies those amendments for annual reporting periods beginning on or after 1 January 2019, with early application is permitted. When an entity first applies those amendments, it applies them to the income tax consequences of dividends recognized on or after the beginning of the earliest comparative period. Since the Company´s current practice is in line with these amendments, the Company does not expect any effect on its consolidated financial statements.

• IAS 23 Borrowing Costs

The amendments clarify that an entity treats as part of general borrowings any borrowing originally made to develop a qualifying asset when substantially all of the activities necessary to prepare that asset for its intended use or sale are complete.

An entity applies those amendments to borrowing costs incurred on or after the beginning of the annual reporting period in which the entity first applies those amendments. An entity applies those amendments for annual reporting periods beginning on or after 1 January 2019, with early application permitted. Since the Company´s current practice is in line with these amendments, the Company does not expect any effect on its consolidated financial statements.

24. Subsequent Events

(a) On January 24, 2019, the Company acquired from Telefónica S.A. and certain of its affiliates (“Telefónica”), 100% of Telefónica Móviles Guatemala, S.A. (“Telefónica Guatemala”), and has entered into an agreement to acquire 99.3% of Telefónica Móviles El Salvador, S.A. de C.V. (“Telefónica El Salvador”). The Telefónica Guatemala acquisition has been completed on this date. The completion of the acquisition of Telefónica El Salvador is subject to certain customary closing conditions, including regulatory approval. The purchase price paid for Telefónica Guatemala was Ps. 6,326,068 (US$333,000 ). The agreed upon purchase price for Telefónica El Salvador is Ps. 5,984,118 (US$315,000). The acquired companies provide mobile and fixed telecommunications services, including voice, data and Pay TV in El Salvador and Guatemala.

(b) On March 18, 2019, the Company announced that it has entered into an agreement to acquire from NII Holdings, Inc. and certain of its affiliates (“NII”) and AI Brazil Holdings B.V. 100% of Nextel Telecomunicações Ltda. (“Nextel Brazil”).

The completion of the acquisition is subject to certain customary closing conditions, including regulatory approval from Agência Nacional de Telecomunicações — Anatel and Conselho Administrativo de Defesa Econômica — CADE. The transaction is also subject to the approval at a stockholders meeting of NII shareholders holding a majority of the outstanding shares of NII. The agreed purchase price for Nextel Brazil is Ps. 17,487,578 (US$905,000) on a cash free / debt free basis.

Nextel Brazil provides nationwide mobile telecommunications services.

25. Supplemental Guarantor Information

Condensed Consolidating Financial Information

The following consolidating information presents condensed consolidating statements of financial position as of December 31, 2017 and 2018 and condensed consolidating statements of comprehensive income and cash flows for each of the three years in the period ended December 31, 2018 of the Company and Telcel (the “wholly-owned Guarantor Subsidiary”). The unconsolidated financial statements of América Móvil and Telcel reflect their investments in subsidiaries on the basis of the equity method. These unconsolidated entities are the Guarantors of most of América Móvil’s consolidated obligations. The guarantees of the Guarantor are full and unconditional.

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The Company’s consolidating condensed financial information for the (i) Company; (ii) its wholly-owned guarantor subsidiary Telcel (on standalone basis), which is a wholly and unconditional guarantor under the Senior Notes; (iii) the combined non-guarantor subsidiaries; iv) eliminations and v) the Company’s consolidated financial statements are as follows:

Condensed consolidating statements of financial position

	As of December 31, 2017
	Parent		Wholly-owned Guarantor Subsidiary		Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Assets:
Cash and cash equivalents	Ps.	7,018,559	Ps.	3,553,352	Ps.	13,698,562		Ps.	—		Ps.	24,270,473
Equity investments at fair value through OCI and other short-term investments		10,303,535		—		48,817,141			—			59,120,676
Accounts receivable and derivative financial instruments		9,874,652		24,064,936		167,873,940			—			201,813,528
Related parties		208,240,067		957,704		503,895,549			(712,225,090	)		868,230
Inventories, net		264,649		16,700,837		21,844,079			—			38,809,565
Other current assets		17,805,747		922,245		(1,375,246	)		—			17,352,746
Property, plant and equipment, Net		1,996,721		24,287,904		650,058,573			—			676,343,198
Investments in associated companies		747,771,790		35,569,788		3,457,152			(783,063,558	)		3,735,172
Intangible assets and other non- current assets, net		4,104,268		73,557,904		386,236,092			—			463,898,264
Total assets	Ps.	1,007,379,988	Ps.	179,614,670	Ps.	1,794,505,842		Ps.	(1,495,288,648	)	Ps.	1,486,211,852
Liabilities:
Short-term debt and current portion of long-term debt	Ps.	34,345,398	Ps.	—	Ps.	17,400,443		Ps.	—		Ps.	51,745,841
Current liabilities		161,940,198		41,304,845		797,880,314			(639,534,701	)		361,590,656
Long-term debt		547,728,176		—		98,410,882			—			646,139,058
Other non-current liabilities		69,201,904		132,728,838		40,909,234			(76,737,196	)		166,102,780
Total liabilities	Ps.	813,215,676	Ps.	174,033,683	Ps.	954,600,873		Ps.	(716,271,897	)	Ps.	1,225,578,335
Equity attributable to equity holders of the parent		194,164,312		5,580,987		741,988,231			(747,569,218	)		194,164,312
Non-controlling interests		—		—		97,916,738			(31,447,533	)		66,469,205
Total equity		194,164,312		5,580,987		839,904,969			(779,016,751	)		260,633,517
Total liabilities and equity	Ps.	1,007,379,988	Ps.	179,614,670	Ps.	1,794,505,842		Ps.	(1,495,288,648	)	Ps.	1,486,211,852

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Condensed consolidating statements of financial position

	As of December 31, 2018
	Parent		Wholly-owned Guarantor Subsidiary		Combined non-guarantor Subsidiaries		Eliminations			Consolidated Total
Assets:
Cash and cash equivalents	Ps.	8,335,101	Ps.	1,745,895	Ps.	11,578,966	Ps.	—		Ps.	21,659,962
Equity investments at fair value through OCI and other short-term investments		9,511,368		—		39,504,566		—			49,015,934
Accounts receivable and derivative financial instruments		31,462,176		35,671,582		154,380,710		—			221,514,468
Related parties		199,566,671		1,144,534		560,142,367		(759,589,967	)		1,263,605
Inventories, net		215,055		18,495,502		21,594,805		—			40,305,362
Other current assets		—		1,218,764		14,077,429		—			15,296,193
Property, plant and equipment, Net		1,340,358		23,192,546		615,467,816		—			640,000,720
Investments in associated companies		734,944,344		88,070,845		16,926,615		(836,809,097	)		3,132,707
Intangible assets and other non- current assets, net		4,113,902		26,176,381		406,744,158		—			437,034,441
Total assets	Ps.	989,488,975	Ps.	195,716,049	Ps.	1,840,417,432	Ps.	(1,596,399,064	)	Ps.	1,429,223,392
Liabilities:
Short-term debt and current portion of long-term debt	Ps.	52,827,411	Ps.	—	Ps.	43,403,223	Ps.	—		Ps.	96,230,634
Current liabilities		153,489,868		72,282,238		597,174,025		(452,085,876	)		370,860,255
Long-term debt		456,918,590		—		85,773,229		—			542,691,819
Other non-current liabilities		130,257,461		109,368,210		242,232,897		(308,290,306	)		173,568,262
Total liabilities	Ps.	793,493,330	Ps.	181,650,448	Ps.	968,583,374	Ps.	(760,376,182	)	Ps.	1,183,350,970
Equity attributable to equity holders of the parent		195,995,645		14,065,601		760,485,332		(774,550,933	)		195,995,645
Non-controlling interests		—		—		111,348,726		(61,471,949	)		49,876,777
Total equity		195,995,645		14,065,601		871,834,058		(836,022,882	)		245,872,422
Total liabilities and equity	Ps.	989,488,975	Ps.	195,716,049	Ps.	1,840,417,432	Ps.	(1,596,399,064	)	Ps.	1,429,223,392

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Condensed consolidating statements of comprehensive income

For the year ended December 31, 2016

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Total revenues	Ps.	137,236,301		Ps.	173,714,225		Ps.	857,137,822		Ps.	(192,675,860	)	Ps.	975,412,488
Total cost and operating expenses		117,835,634			160,949,691			778,483,079			(191,466,226	)		865,802,178
Operating income		19,400,667			12,764,534			78,654,743			(1,209,634	)		109,610,310
Interest (expense) income, net		(12,331,095	)		97,314			(17,207,855	)		(227,781	)		(29,669,417	)
Foreign currency exchange (loss) gain, net		(46,625,392	)		(5,853,669	)		12,051,654			—			(40,427,407	)
Other financing cost, net		(10,475,673	)		(11,203,533	)		5,453,365			—			(16,225,841	)
Income tax		(7,712,179	)		1,139,631			17,971,404			—			11,398,856
Equity interest in net income of associated companies		50,968,741			(1,342,073	)		(6,677,059	)		(42,759,659	)		189,950
Net profit (loss) for year	Ps.	8,649,427		Ps.	(6,677,058	)	Ps.	54,303,444		Ps.	(44,197,074	)	Ps.	12,078,739
Distribution of the net profit (loss) to:
Equity owners of holding company		8,649,427			(6,677,058	)		50,049,280			(43,372,222	)		8,649,427
Non-controlling interest		—			—			4,254,164			(824,852	)		3,429,312
Net profit (loss)	Ps.	8,649,427		Ps.	(6,677,058	)	Ps.	54,303,444		Ps.	(44,197,074	)	Ps.	12,078,739
Other comprehensive income items:
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities		104,178,880			755,978			108,291,984			(105,728,134	)		107,498,708
Effect of fair value of derivatives, net of deferred taxes		48,496			—			30,206			(29,573	)		49,129
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect		14,771,770			(12,300	)		7,477,926			(7,463,997	)		14,773,399
Equity investments at fair value		(6,673,731	)		—			(6,673,731	)		6,673,731			(6,673,731	)
Total other comprehensive income items for the period	Ps.	112,325,415		Ps.	743,678		Ps.	109,126,385		Ps.	(106,547,973	)	Ps.	115,647,505
Total comprehensive income for the period	Ps.	120,974,842		Ps.	(5,933,380	)	Ps.	163,429,829		Ps.	(150,745,047	)	Ps.	127,726,244
Comprehensive income for the period attributable to:
Equity holders of the parent	Ps.	120,974,842		Ps.	(5,933,380	)	Ps.	150,900,984		Ps.	(144,967,604	)	Ps.	120,974,842
Non-controlling interests		—			—			12,528,845			(5,777,443	)		6,751,402
	Ps.	120,974,842		Ps.	(5,933,380	)	Ps.	163,429,829		Ps.	(150,745,047	)	Ps.	127,726,244

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Condensed consolidating statements of comprehensive income

For the year ended December 31, 2017

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Total revenues	Ps.	160,057,511		Ps.	170,991,493		Ps.	887,951,615		Ps.	(197,367,084	)	Ps.	1,021,633,535
Total cost and operating expenses		123,548,341			163,152,868			832,429,198			(197,640,175	)		921,490,232
Operating income		36,509,170			7,838,625			55,522,417			273,091			100,143,303
Interest (expense) income, net		(16,779,235	)		(12,365,116	)		1,810,523			(41,305	)		(27,375,133	)
Foreign currency exchange (loss) gain, net		(15,223,111	)		1,320,667			83,493			—			(13,818,951	)
Other financing cost, net		6,775,455			—			(8,719,215	)		—			(1,943,760	)
Income tax		14,201,399			1,386,519			9,353,593			—			24,941,511
Equity interest in net income of associated companies		32,245,041			(8,977,146	)		(13,466,845	)		(9,709,665	)		91,385
Net profit (loss) for year	Ps.	29,325,921		Ps.	(13,569,489	)	Ps.	25,876,780		Ps.	(9,477,879	)	Ps.	32,155,333
Distribution of the net profit (loss) to:
Equity owners of holding company		29,325,921			(13,569,489	)		21,417,549			(7,848,060	)		29,325,921
Non-controlling interest		—			—			4,459,231			(1,629,819	)		2,829,412
Net profit (loss)	Ps.	29,325,921		Ps.	(13,569,489	)	Ps.	25,876,780		Ps.	(9,477,879	)	Ps.	32,155,333
Other comprehensive income items:
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities		(21,683,333	)		(1,897,936	)		(18,309,877	)		23,581,269			(18,309,877	)
Effect of fair value of derivatives, net of deferred taxes		12,292			—			12,292			(12,292	)		12,292
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect		(7,075,606	)		(8,439	)		(7,046,089	)		7,084,045			(7,046,089	)
Equity investments at fair value		622,424			—			622,424			(622,424	)		622,424
Total other comprehensive income items for the period	Ps.	(28,124,223	)	Ps.	(1,906,375	)	Ps.	(24,721,250	)	Ps.	30,030,598		Ps.	(24,721,250	)
Total comprehensive income for the period	Ps.	1,201,698		Ps.	(15,475,864	)	Ps.	1,155,530		Ps.	20,552,719		Ps.	7,434,083
Comprehensive income for the period attributable to:
Equity holders of the parent	Ps.	1,201,698		Ps.	(15,475,864	)	Ps.	(5,076,855	)	Ps.	20,552,719		Ps.	1,201,698
Non-controlling interests		—			—			6,232,385			—			6,232,385
	Ps.	1,201,698		Ps.	(15,475,864	)	Ps.	1,155,530		Ps.	20,552,719		Ps.	7,434,083

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Condensed consolidating statements of comprehensive income

For the year ended December 31, 2018

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Total revenues	Ps.	170,887,145		Ps.	190,924,413		Ps.	890,427,121		Ps.	(214,030,998	)	Ps.	1,038,207,681
Total cost and operating expenses		129,039,749			183,542,058			799,085,884			(213,017,181	)		898,650,510
Operating income		41,847,396			7,382,355			91,341,237			(1,013,817	)		139,557,171
Interest (expense) income, net		(24,831,538	)		(11,033,069	)		14,757,906			(18,563	)		(21,125,264	)
Foreign currency exchange (loss) gain, net		11,805,283			626,304			(19,693,543	)		—			(7,261,956	)
Other financing cost, net		(4,443,892	)		—			(5,732,424	)		—			(10,176,316	)
Income tax		17,754,010			798,639			27,924,430			—			46,477,079
Equity interest in net income of associated companies		46,101,188			1,325,723			(2,497,059	)		(44,929,585	)		267
Net profit (loss) for year	Ps.	52,724,427		Ps.	(2,497,326	)	Ps.	50,251,687		Ps.	(45,961,965	)	Ps.	54,516,823
Distribution of the net profit (loss) to:
Equity owners of holding company		52,724,427			(2,497,326	)		46,641,696			(44,302,600	)		52,566,197
Non-controlling interest		—			—			3,609,991			(1,659,365	)		1,950,626
Net profit (loss)	Ps.	52,724,427		Ps.	(2,497,326	)	Ps.	50,251,687		Ps.	(45,961,965	)	Ps.	54,516,823
Other comprehensive income items:
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities		(61,223,458	)		(724,521	)		(64,314,032	)		61,947,979			(64,314,032	)
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect		652,722			(1,603,145	)		757,278			950,423			757,278
Equity investments at fair value		(3,765,688	)		—			(3,765,688	)		3,765,688			(3,765,688	)
Total other comprehensive income items for the period	Ps.	(64,336,424	)	Ps.	(2,327,666	)	Ps.	(67,322,442	)	Ps.	66,664,090		Ps.	(67,322,442	)
Total comprehensive income for the period	Ps.	(11,611,997	)	Ps.	(4,824,992	)	Ps.	(17,070,755	)	Ps.	20,702,125		Ps.	(12,805,619	)
Comprehensive income for the period attributable to:
Equity holders of the parent	Ps.	(11,611,997	)	Ps.	(4,824,992	)	Ps.	(16,035,363	)	Ps.	20,702,125		Ps.	(11,770,227	)
Non-controlling interests		—			—			(1,035,392	)		—			(1,035,392	)
	Ps.	(11,611,997	)	Ps.	(4,824,992	)	Ps.	(17,070,755	)	Ps.	20,702,125		Ps.	(12,805,619	)

F-90

Condensed consolidating statements of cash flows

For the year ended December 31, 2016

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Operating activities:
Profit before taxes	Ps.	937,247		Ps.	(5,537,427	)	Ps.	28,077,775		Ps.	—		Ps.	23,477,595
Non-cash items		(997,587	)		19,800,396			209,821,118			—			228,623,927
Changes in working capital:		74,520,320			9,130,768			(93,359,195	)		(6,595,361	)		(16,303,468	)
Net cash flows provided by operating activities	Ps.	74,459,980		Ps.	23,393,737		Ps.	144,539,698		Ps.	(6,595,361	)	Ps.	235,798,054
Investing activities:
Purchase of property, plant and equipment		—			(7,860,232	)		(130,846,925	)		—			(138,707,157	)
Acquisition of intangibles		—			(4,947,506	)		(11,369,232	)		—			(16,316,738	)
Dividends received from associates		21,950			—			5,988,938			(270,796	)		5,740,092
Proceeds from sale of plant, property and equipment		20,078			—			95,522			—			115,600
Acquisition of business, net of cash acquired		—			(2,796,254	)		(1,823,813	)		2,796,254			(1,823,813	)
Partial sale of shares of associate company		756,444			—			2,796,254			(3,552,698	)		—
Investment in associates companies		—			663,203			(666,690	)		—			(3,487	)
Net cash flows provided by (used in) investing activities	Ps.	798,472		Ps.	(14,940,789	)	Ps.	(135,825,946	)	Ps.	(1,027,240	)	Ps.	(150,995,503	)
Financing activities:
Bank loans, net		(39,598,698	)		—			(21,792,115	)		—			(61,390,813	)
Acquisition of no controlling interest		—			—			(2,280,278	)		—			(2,280,278	)
Interest paid		(24,826,139	)		(7,972,827	)		(5,922,267	)		6,595,361			(32,125,872	)
Paid-In capital		—			—			(756,444	)		756,444			—
Sale of shares of subsidiaries		—			—			6,323,336			—			6,323,336
Repurchase of shares and others		(7,092,385	)		—			71,138			—			(7,021,247	)
Payment of dividends		(13,437,168	)		—			(643,585	)		270,796			(13,809,957	)
Derivative financial instruments		—			—			(351,213	)		—			(351,213	)
Net cash flows (used in) financing activities	Ps.	(84,954,390	)	Ps.	(7,972,827	)	Ps.	(25,351,428	)	Ps.	7,622,601		Ps.	(110,656,044	)
Net (decrease) increase in cash and cash equivalents		(9,695,938	)		480,121			(16,637,676	)		—			(25,853,493	)
Adjustment to cash flow for exchange rate differences		—			—			3,911,844			—			3,911,844
Cash and cash equivalents at beginning of the period		13,803,584			1,468,036			29,888,412			—			45,160,032
Cash and cash equivalents at end of the period	Ps.	4,107,645		Ps.	1,948,159		Ps.	17,162,579		Ps.	—		Ps.	23,218,383

F-91

Condensed consolidating statements of cash flows

For the year ended December 31, 2017

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Operating activities:
Profit before taxes	Ps.	43,527,320		Ps.	(12,182,970	)	Ps.	35,230,373		Ps.	(9,477,879	)	Ps.	57,096,844
Non-cash items		(17,017,287	)		30,000,109			171,062,158			11,635,563			195,680,543
Changes in working capital:		(18,973,478	)		(9,486	)		(66,062,629	)		50,040,581			(35,005,012	)
Net cash flows provided by operating activities	Ps.	7,536,555		Ps.	17,807,653		Ps.	140,229,902		Ps.	52,198,265		Ps.	217,772,375
Investing activities:
Purchase of property, plant and equipment		16,526			(5,571,410	)		(113,630,253	)		—			(119,185,137	)
Acquisition of intangibles		—			(3,053,345	)		(14,485,196	)		—			(17,538,541	)
Dividends received from associates		21,465,687			970,000			2,385,559			(22,435,687	)		2,385,559
Proceeds from sale of plant, property and equipment		—			—			133,349			—			133,349
Acquisition of business, net of cash acquired		—			(3,381,505	)		(3,497,288	)		—			(6,878,793	)
Investment in associates companies		—			1,925,898			—			(1,925,898	)		—
Sale of associated company		—			—			340,040			—			340,040
Net cash flows provided by (used in) investing activities	Ps.	21,482,213		Ps.	(9,110,362	)	Ps.	(128,753,789	)	Ps.	(24,361,585	)	Ps.	(140,743,523	)
Financing activities:
Bank loans, net		13,548,138			—			16,382,838			(57,364,465	)		(27,433,489	)
Acquisition of no controlling interest		—			—			(11,930	)		—			(11,930	)
Interest paid		(24,009,216	)		(7,092,098	)		(7,187,225	)		7,092,098			(31,196,441	)
Repurchase of shares and others		(1,240,028	)		—			6,657			—			(1,233,371	)
Payment of dividends		(14,406,748	)		—			(24,120,329	)		22,435,687			(16,091,390	)
Derivative financial instruments		—			—			(71,474	)		—			(71,474	)
Net cash flows used in financing activities	Ps.	(26,107,854	)	Ps.	(7,092,098	)	Ps.	(15,001,463	)	Ps.	(27,836,680	)	Ps.	(76,038,095	)
Net (decrease) increase in cash and cash equivalents		2,910,914			1,605,193			(3,525,350	)		—			990,757
Adjustment to cash flow for exchange rate differences		—			—			61,333			—			61,333
Cash and cash equivalents at beginning of the period		4,107,645			1,948,159			17,162,579			—			23,218,383
Cash and cash equivalents at end of the period	Ps.	7,018,559		Ps.	3,553,352		Ps.	13,698,562		Ps.	—		Ps.	24,270,473

F-92

Condensed consolidating statements of cash flows

For the year ended December 31, 2018

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Operating activities:
Profit before taxes	Ps.	70,478,437		Ps.	(1,698,687	)	Ps.	78,176,117		Ps.	(45,961,965	)	Ps.	100,993,902
Non-cash items		(23,099,316	)		20,952,414			149,503,016			39,836,704			187,192,818
Changes in working capital:		(49,040,542	)		(35,329,228	)		(61,332,380	)		105,845,958			(39,856,192	)
Net cash flows provided by operating activities	Ps.	(1,661,421	)	Ps.	(16,075,501	)	Ps.	166,346,753		Ps.	99,720,697		Ps.	248,330,528
Investing activities:
Purchase of property, plant and equipment		(17,709	)		(4,031,228	)		(139,839,096	)		—			(143,888,033	)
Acquisition of intangibles		—			(2,993,373	)		(4,940,274	)		—			(7,933,647	)
Dividends received from associates		24,314,803			—			2,622,237			(24,314,803	)		2,622,237
Proceeds from sale of plant, property and equipment		—			—			178,532			—			178,532
Acquisition of business, net of cash acquired		—			—			(310,604	)		—			(310,604	)
Investment in associates companies		—			(5,092,881	)		—			5,092,881			—
Sale of associated company		—			—			548,484			—			548,484
Net cash flows provided by (used in) investing activities	Ps.	24,297,094		Ps.	(12,117,482	)	Ps.	(141,740,721	)	Ps.	(19,221,922	)	Ps.	(148,783,031	)
Financing activities:
Bank loans, net		24,784,341			—			19,592,788			(78,428,052	)		(34,050,923	)
Acquisition of no controlling interest		—			—			(115,821	)		—			(115,821	)
Interest paid		(24,802,363	)		26,385,526			(6,066,654	)		(26,385,526	)		(30,869,017	)
Repurchase of shares and others		(514,007	)		—			2,586			—			(511,421	)
Payment of dividends		(20,787,102	)		—			(25,897,494	)		24,314,803			(22,369,793	)
Redemption of hybrid bond		—			—			(13,440,120	)		—			(13,440,120	)
Net cash flows used in financing activities	Ps.	(21,319,131	)	Ps.	26,385,526		Ps.	(25,924,715	)	Ps.	(80,498,775	)	Ps.	(101,357,095	)
Net (decrease) increase in cash and cash equivalents		1,316,542			(1,807,457	)		(1,318,683	)		—			(1,809,598	)
Adjustment to cash flow for exchange rate differences		—			—			(800,913	)		—			(800,913	)
Cash and cash equivalents at beginning of the period		7,018,559			3,553,352			13,698,562			—			24,270,473
Cash and cash equivalents at end of the period	Ps.	8,335,101		Ps.	1,745,895		Ps.	11,578,966		Ps.	—		Ps.	21,659,962

F-93

EX-8.1

Exhibit 8.1

LIST OF CERTAIN SUBSIDIARIES OF AMÉRICA MÓVIL, S.A.B. DE

C.V.

As of March 31, 2019

Name of Company	Jurisdiction	Ownership Interest	Main Activity
AMX Tenedora, S.A. de C.V.	Mexico	100.0	Holding Company
Compañía Dominicana de Teléfonos, S. A. (Codetel)	Dominican Republic	100.0	Fixed-line/Wireless
Sercotel, S.A. de C.V.	Mexico	100.0	Holding Company
Radiomóvil Dipsa, S.A. de C.V. and subsidiaries (Telcel)	Mexico	100.0	Wireless
Puerto Rico Telephone Company, Inc.	Puerto Rico	100.0	Fixed-line/Wireless
Servicios de Comunicaciones de Honduras, S.A. de C.V. (Sercom Honduras)	Honduras	100.0	Wireless
TracFone Wireless, Inc.	USA	100.0	Wireless
Claro Telecom Participacões, S.A.	Brazil	100.0	Holding Company
Americel S.A.	Brazil	100.0	Wireless
Telecomunicaciones de Guatemala, S.A.	Guatemala	99.3	Fixed-line/Wireless
Empresa Nicaragüense de Telecomunicaciones, S.A.	Nicaragua	99.6	Fixed-line/Wireless
Estesa Holding Corp.	Panama	100.0	Holding Company
Cablenet, S.A.	Nicaragua	100.0	Cable TV
Estaciones Terrenas de Satélite, S.A. (Estesa)	Nicaragua	100.0	Cable TV
Compañía de Telecomunicaciones de El Salvador (CTE), S.A. de C.V.	El Salvador	95.8	Fixed-line
Cablenet, S.A. (Cablenet)	Guatemala	95.8	Fixed-line
Telecomoda, S.A. de C.V. (Telecomoda)	El Salvador	95.8	Directories Provider
CTE Telecom Personal, S.A. de C.V.	El Salvador	95.8	Wireless
Comunicación Celular S.A. (Comcel)	Colombia	99.4	Wireless
Telmex Colombia, S.A.	Colombia	99.4	Fixed-line/Cable TV
Consorcio Ecuatoriano de Telecomunicaciones, S.A. (Conecel)	Ecuador	100.0	Wireless
AMX Argentina, S.A.	Argentina	100.0	Wireless
Telstar, S.A.	Uruguay	99.9	Fixed-line
Flimay, S.A.	Uruguay	99.9	DTH
Ertach, S.A.	Argentina	99.9	Wireless
Telmex Argentina, S.A.	Argentina	99.9	Services to Corporate Customers
AMX Paraguay, S.A.	Paraguay	100.0	Wireless
AM Wireless Uruguay, S.A.	Uruguay	100.0	Wireless

Name of Company	Jurisdiction	Ownership Interest	Main Activity
Claro Chile S.A.	Chile	100.0	Wireless
Claro Servicios Empresariales, S.A.	Chile	99.9	Fixed-line/Wireless
América Móvil Perú, S.A.	Peru	100.0	Wireless
Claro Panamá, S.A.	Panama	100.0	Wireless

EX-12.1

Exhibit 12.1

CEO CERTIFICATION

I, Daniel Hajj Aboumrad, certify that:

1. I have reviewed this annual report on Form 20-F of América Móvil, S.A.B. de C.V.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the company as of, and for, the periods presented in this report;

4. The company’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the company and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the company’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the company’s internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the company’s internal control over financial reporting; and

5. The company’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the company’s auditors and the audit committee of the company’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the company’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the company’s internal control over financial reporting.

Dated: April 11, 2019

/s/ Daniel Hajj Aboumrad

Daniel Hajj Aboumrad

Chief Executive Officer

EX-12.2

Exhibit 12.2

CFO CERTIFICATION

I, Carlos José García Moreno Elizondo, certify that:

1. I have reviewed this annual report on Form 20-F of América Móvil, S.A.B. de C.V.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the company as of, and for, the periods presented in this report;

4. The company’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the company and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the company’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the company’s internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the company’s internal control over financial reporting; and

5. The company’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the company’s auditors and the audit committee of the company’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the company’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the company’s internal control over financial reporting.

Dated: April 11, 2019

/s/ Carlos José García Moreno Elizondo

Carlos José García Moreno Elizondo

Chief Financial Officer

EX-13.1

Exhibit 13.1

OFFICER CERTIFICATIONS

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of América Móvil, S.A.B. de C.V., a sociedad anónima bursátil de capital variable organized under the laws of Mexico (the “Company”), does hereby certify to such officer’s knowledge that:

The annual report on Form 20-F for the fiscal year ended December 31, 2018 (the “Form 20-F”) of the Company fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and information contained in the Form 20-F fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: April 11, 2019

/s/ Daniel Hajj Aboumrad

Daniel Hajj Aboumrad

Chief Executive Officer

Dated: April 11, 2019

/s/ Carlos José García Moreno Elizondo

Carlos José García Moreno Elizondo

Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-15.2

Exhibit 15.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statement (Form F-3ASR No. 333-227649) of América Móvil, S.A.B. de C.V. and subsidiaries, of our reports dated April 11, 2019, with respect to the consolidated financial statements of América Móvil, S.A.B. de C.V. and subsidiaries, and the effectiveness of internal control over financial reporting of América Móvil, S.A.B. de C.V. and subsidiaries, included in this Annual Report on Form 20-F for the year ended December 31, 2018.

/s/ MANCERA, S.C.

Mexico City, Mexico

April 11, 2019

XML

Document and Entity Information shares in Millions	12 Months Ended
	Dec. 31, 2018 shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Trading Symbol	AMX
Entity Registrant Name	AMERICA MOVIL SAB DE CV/
Entity Central Index Key	0001129137
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
AA Shares [member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	20,602
A Shares [member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	567
L Shares [member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	44,887

XML

Consolidated Statements of Financial Position $ in Thousands, $ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)
Current assets:
Cash and cash equivalents	$ 21,659,962	$ 1,100	$ 24,270,473
Equity investments at fair value through OCI and other short-term investments	49,015,934	2,490	59,120,676
Accounts receivable:
Subscribers, distributors, recoverable taxes, contract assets and other, net	216,226,920	10,986	193,776,144
Related parties	1,263,605	64	868,230
Derivative financial instruments	5,287,548	269	8,037,384
Inventories, net	40,305,362	2,048	38,809,565
Other current assets, net	15,296,193	777	17,352,746
Total current assets	349,055,524	17,734	342,235,218
Non-current assets:
Property, plant and equipment, net	640,000,720	32,516	676,343,198
Intangibles, net	122,137,703	6,205	143,539,626
Goodwill	145,566,497	7,396	151,463,232
Investments in associated companies	3,132,707	159	3,735,172
Deferred income taxes	111,186,768	5,649	116,571,349
Accounts receivable, subscriber, distributors and contract assets, net	15,681,872	797	9,786,581
Other assets, net	42,461,601	2,157	42,537,476
Total assets	1,429,223,392	72,613	1,486,211,852
Current liabilities:
Short-term debt and current portion of long-term debt	96,230,634	4,889	51,745,841
Accounts payable	221,957,267	11,277	212,673,407
Accrued liabilities	56,433,691	2,867	67,752,758
Income tax	19,232,191	977	9,362,009
Other taxes payable	23,979,334	1,218	24,387,484
Derivative financial instruments	13,539,716	688	10,602,539
Related parties	2,974,213	151	2,540,412
Deferred revenues	32,743,843	1,664	34,272,047
Total current liabilities	467,090,889	23,731	413,336,497
Non-current-liabilities:
Long-term debt	542,691,819	27,572	646,139,058
Deferred income taxes	24,573,441	1,248	11,997,364
Income tax	7,891,042	401	8,622,500
Deferred revenues	3,239,301	165	3,183,727
Derivative financial instruments	3,567,863	181	3,756,921
Asset retirement obligations	15,971,601	811	18,245,129
Employee benefits	118,325,014	6,012	120,297,139
Total non-current liabilities	716,260,081	36,390	812,241,838
Total liabilities	1,183,350,970	60,121	1,225,578,335
Equity:
Capital stock	96,338,378	4,895	96,338,508
Retained earnings:
Prior years	184,689,288	9,383	141,761,677
Profit for the year	52,566,197	2,670	29,325,921
Total retained earnings	237,255,485	12,053	171,087,598
Other comprehensive loss items	(137,598,218)	(6,990)	(73,261,794)
Equity attributable to equity holders of the parent	195,995,645	9,958	194,164,312
Non-controlling interests	49,876,777	2,534	66,469,205
Total equity	245,872,422	12,492	260,633,517
Total liabilities and equity	$ 1,429,223,392	$ 72,613	$ 1,486,211,852

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Consolidated Statements of Comprehensive Income $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($) $ / shares	Dec. 31, 2018 USD ($) $ / shares	Dec. 31, 2017 MXN ($) $ / shares	Dec. 31, 2016 MXN ($) $ / shares
Operating revenues:
Revenues services	$ 863,647,642	$ 43,878	$ 878,411,323	$ 831,885,365
Sales of equipment	174,560,039	8,869	143,222,212	143,527,123
Operating revenues	1,038,207,681	52,747	1,021,633,535	975,412,488
Operating costs and expenses:
Cost of sales and services	508,822,430	25,851	496,335,746	485,060,579
Commercial, administrative and general expenses	227,192,478	11,543	240,634,431	228,101,116
Other expenses	6,923,022	352	24,345,113	4,114,562
Depreciation and amortization	155,712,580	7,911	160,174,942	148,525,921
Operating costs and expenses	898,650,510	45,657	921,490,232	865,802,178
Operating income	139,557,171	7,090	100,143,303	109,610,310
Interest income	10,646,169	541	2,925,648	4,192,595
Interest expense	(31,771,433)	(1,614)	(30,300,781)	(33,862,012)
Foreign currency exchange loss, net	(7,261,956)	(369)	(13,818,951)	(40,427,407)
Valuation of derivatives, interest cost from labor obligations and other financial items, net	(10,176,316)	(517)	(1,943,760)	(16,225,841)
Equity interest in net result of associated companies	267		91,385	189,950
Profit before income tax	100,993,902	5,131	57,096,844	23,477,595
Income tax	46,477,079	2,361	24,941,511	11,398,856
Net profit for the year	54,516,823	2,770	32,155,333	12,078,739
Net profit for the year attributable to:
Equity holders of the parent	52,566,197	2,670	29,325,921	8,649,427
Non-controlling interests	1,950,626	100	2,829,412	3,429,312
Net profit for the year	$ 54,516,823	$ 2,770	$ 32,155,333	$ 12,078,739
Basic and diluted earnings per share attributable to equity holders of the parent | (per share)	$ 0.79	$ 0.04	$ 0.44	$ 0.13
Net other comprehensive (loss) income that may be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities	$ (64,314,032)	$ (3,268)	$ (18,309,877)	$ 107,498,708
Effect of fair value of derivatives, net of deferred taxes			12,292	49,129
Items that will not be reclassified to (loss) or profit in subsequent years:
Re-measurement of defined benefit plan, net of deferred taxes	757,278	38	(7,046,089)	14,773,399
Unrealized (loss) gain on equity investments at fair value, net of deferred taxes	(3,765,688)	(191)	622,424	(6,673,731)
Total other comprehensive (loss) income items for the year, net of deferred taxes	(67,322,442)	(3,421)	(24,721,250)	115,647,505
Total comprehensive income (loss) for the year	(12,805,619)	(651)	7,434,083	127,726,244
Comprehensive income (loss) for the year attributable to:
Equity holders of the parent	(11,770,227)	(598)	1,201,698	120,974,842
Non-controlling interests	(1,035,392)	(53)	6,232,385	6,751,402
Total comprehensive income (loss) for the year	$ (12,805,619)	$ (651)	$ 7,434,083	$ 127,726,244

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Consolidated Statements of Changes in Shareholders' Equity $ in Thousands, $ in Millions	MXN ($)	USD ($)	Capital stock [member] MXN ($)	Legal reserve [member] MXN ($)	Retained earnings [member] MXN ($)	Effect of derivative financial instruments acquired for hedging purposes [member] MXN ($)	Reserve of gains and losses from investments in equity instruments [member] MXN ($)	Re-measurements of defined benefit plans [member] MXN ($)	Cumulative translation adjustment [member] MXN ($)	Total equity attributable to equity holders of the parent [member] MXN ($)	Non- controlling interests [member] MXN ($)
Beginning balance at Dec. 31, 2015	$ 160,854,186				$ 171,972,999		$ 4,011	$ (82,844,947)	$ (73,490,197)	$ 112,277,995	$ 48,576,191
Net profit for the year	12,078,739				8,649,427					8,649,427	3,429,312
Effect of fair value of derivatives, net of deferred taxes	49,129					$ 48,496				48,496	633
Unrealized gain or loss on equity investments at fair value, net of deferred taxes	(6,673,731)						(6,673,731)			(6,673,731)
Remeasurement of defined benefit plan, net of deferred taxes	14,773,399							14,771,770		14,771,770	1,629
Effect of translation of foreign entities	107,498,708								104,178,880	104,178,880	3,319,828
Total comprehensive income (loss) for the year	127,726,244				8,649,427	48,496	(6,673,731)	14,771,770	104,178,880	120,974,842	6,751,402
Dividends declared	(18,991,635)				(18,339,294)					(18,339,294)	(652,341)
Stock dividend (Note 19)	4,607,786		$ 1,512		4,606,274					4,607,786
Repurchase of shares	(7,215,872)		(2,475)		(7,213,397)					(7,215,872)
Partial sale of shares of Telekom Austria (Note 12)	6,323,336							68,127	(1,139,192)	(1,071,065)	7,394,401
Other acquisitions of non-controlling interests (Note 12)	(2,280,278)				(2,319,149)					(2,319,149)	38,871
Ending balance at Dec. 31, 2016	271,023,767		96,337,514	$ 358,440	157,356,860	(12,292)	(6,669,720)	(68,005,050)	29,549,491	208,915,243	62,108,524
Net profit for the year	32,155,333				29,325,921					29,325,921	2,829,412
Effect of fair value of derivatives, net of deferred taxes	12,292					12,292				12,292
Unrealized gain or loss on equity investments at fair value, net of deferred taxes	622,424						622,424			622,424
Remeasurement of defined benefit plan, net of deferred taxes	(7,046,089)							(7,075,606)		(7,075,606)	29,517
Effect of translation of foreign entities	(18,309,877)								(21,683,333)	(21,683,333)	3,373,456
Total comprehensive income (loss) for the year	7,434,083				29,325,921	$ 12,292	622,424	(7,075,606)	(21,683,333)	1,201,698	6,232,385
Dividends declared	(21,663,578)				(19,815,470)					(19,815,470)	(1,848,108)
Stock dividend (Note 19)	4,904,082		1,264		4,902,818					4,904,082
Repurchase of shares	(1,040,956)		(270)		(1,040,686)					(1,040,956)
Other acquisitions of non-controlling interests (Note 12)	(23,881)				(285)					(285)	(23,596)
Ending balance (Effect of adoption of new accounting standards [member]) at Dec. 31, 2017	20,116,789				19,598,349					19,598,349	518,440
Ending balance (Restated balance [member]) at Dec. 31, 2017	280,750,306		96,338,508	358,440	190,327,507		(6,047,296)	(75,080,656)	7,866,158	213,762,661	66,987,645
Ending balance at Dec. 31, 2017	260,633,517		96,338,508	$ 358,440	170,729,158		(6,047,296)	(75,080,656)	7,866,158	194,164,312	66,469,205
Net profit for the year	54,516,823				52,566,197					52,566,197	1,950,626
Unrealized gain or loss on equity investments at fair value, net of deferred taxes	(3,765,688)	$ (191)					(3,765,688)			(3,765,688)
Remeasurement of defined benefit plan, net of deferred taxes	757,278	38						652,722		652,722	104,556
Effect of translation of foreign entities	(64,314,032)								(61,223,458)	(61,223,458)	(3,090,574)
Total comprehensive income (loss) for the year	(12,805,619)	(651)			52,566,197		(3,765,688)	652,722	(61,223,458)	(11,770,227)	(1,035,392)
Dividends declared	(22,984,982)				(21,134,520)					(21,134,520)	(1,850,462)
Hyperinflation adjustment (Note 2i)	15,826,934				15,826,934					15,826,934
Repurchase of shares	(518,763)		$ (130)		(518,633)					(518,763)
Redemption of hybrid bond (Note 19)	(13,440,120)	(683)									(13,440,120)
Other acquisitions of non-controlling interests (Note 12)	(955,334)				$ (170,440)					(170,440)	(784,894)
Ending balance at Dec. 31, 2018	$ 245,872,422	$ 12,492					$ (9,812,984)	$ (74,427,934)	$ (53,357,300)	$ 195,995,645	$ 49,876,777

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Consolidated Statements of Cash Flows $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)
Operating activities
Profit before income tax	$ 100,993,902	$ 5,131	$ 57,096,844	$ 23,477,595
Items not requiring the use of cash:
Depreciation	129,115,727	6,560	135,206,080	127,662,344
Amortization of intangible and other assets	26,596,853	1,351	24,968,862	20,863,577
Equity interest in net income of associated companies	(267)		(91,385)	(189,950)
Loss on sale of property, plant and equipment	664,777	34	145,225	8,059
Net period cost of labor obligations	13,989,100	711	13,636,182	14,240,271
Foreign currency exchange loss, net	6,148,612	312	11,699,985	34,049,726
Interest income	(10,646,169)	(541)	(2,925,648)	(4,192,595)
Interest expense	31,771,433	1,614	30,300,781	33,862,012
Employee profit sharing	1,500,342	76	1,751,312	2,235,267
Loss (gain) in valuation of derivative financial instruments, capitalized interest expense and other, net	(7,518,445)	(382)	(19,010,851)	85,216
Gain on net monetary positions	(4,429,145)	(225)
Working capital changes:
Subscribers, distributors, recoverable taxes, contract assets and other, net	(15,420,291)	(783)	1,799,095	(14,192,651)
Prepaid expenses	3,264,685	166	4,588,584	792,979
Related parties	38,426	2	(558,651)	829,632
Inventories	(3,232,136)	(164)	(2,991,009)	3,076,159
Other assets	(6,081,740)	(309)	(4,763,394)	(2,944,581)
Employee benefits	(14,235,549)	(723)	(14,692,218)	(5,384,944)
Accounts payable and accrued liabilities	23,997,632	1,219	5,190,137	18,196,349
Employee profit sharing paid	(1,013,799)	(52)	(1,471,946)	(3,297,439)
Financial instruments and other	5,286,290	269	1,515,668	28,878,632
Deferred revenues	38,243	2	(452,913)	(972,376)
Interest received	1,215,800	62	819,940	3,239,845
Income taxes paid	(33,713,753)	(1,713)	(23,988,305)	(44,525,073)
Net cash flows provided by operating activities	248,330,528	12,617	217,772,375	235,798,054
Investing activities
Purchase of property, plant and equipment	(143,888,033)	(7,310)	(119,185,137)	(138,707,157)
Acquisition of intangibles	(7,933,647)	(403)	(17,538,541)	(16,316,738)
Dividends received	2,622,237	133	2,385,559	5,740,092
Proceeds from sale of plant, property and equipment	178,532	9	133,349	115,600
Acquisition of businesses, net of cash acquired	(310,604)	(16)	(6,878,793)	(1,823,813)
Partial sale of shares of associated company	548,484	28	340,040
Investments in associate companies				(3,487)
Net cash flows provided by (used in) investing activities	(148,783,031)	(7,559)	(140,743,523)	(150,995,503)
Financing activities
Loans obtained	155,263,221	7,888	143,607,726	64,281,631
Repayment of loans	(189,314,144)	(9,618)	(171,041,215)	(125,672,444)
Interest paid	(30,869,017)	(1,568)	(31,196,441)	(32,125,872)
Repurchase of shares	(511,421)	(26)	(1,233,371)	(7,021,247)
Dividends paid	(22,369,793)	(1,137)	(16,091,390)	(13,809,957)
Derivative financial instruments			(71,474)	(351,213)
Partial sale of shares in subsidiary				6,323,336
Redemption of hybrid bond	(13,440,120)	(683)
Acquisition of non-controlling interests	(115,821)	(6)	(11,930)	(2,280,278)
Net cash flows used in financing activities	(101,357,095)	(5,150)	(76,038,095)	(110,656,044)
Net (decrease) increase in cash and cash equivalents	(1,809,598)	(92)	990,757	(25,853,493)
Adjustment to cash flows due to exchange rate fluctuations, net	(800,913)	(41)	61,333	3,911,844
Cash and cash equivalents at beginning of the period	24,270,473	1,233	23,218,383	45,160,032
Cash and cash equivalents at end of the period	21,659,962	1,100	24,270,473	23,218,383
Non-cash transactions related to:
Acquisitions of property, plant and equipment in accounts payable at end year	19,099,066	970	18,869,210	13,497,804
Redemption of exchangeable bond	16,446,262	836
Non-cash transactions	$ 35,545,328	$ 1,806	$ 18,869,210	$ 13,497,804

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Description of the Business and Relevant Events

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Description of the Business and Relevant Events

1. Description of the Business and Relevant Events

I. Corporate Information

América Móvil, S.A.B. de C.V. and subsidiaries (hereinafter, the “Company”, “América Móvil” or “AMX”) was incorporated under laws of Mexico on September 25, 2000. The Company provides telecommunications services in 25 countries throughout Latin America, the United States, the Caribbean and Europe. These telecommunications services include mobile and fixed-line voice services, wireless and fixed data services, internet access and Pay TV, over the top and other related services. The Company also sells equipment, accessories and computers.

• Voice services provided by the Company, both wireless and fixed, mainly include the following: airtime, local, domestic and international long-distance services, and network interconnection services.

• Data services include value added, corporate networks, data and Internet services.

• Pay TV represents basic services, as well as pay per view and additional programming and advertising services.

• AMX provides other related services to advertising in telephone directories, publishing and call center services.

• The Company also provides video, audio and other media content that is delivered through the internet directly from the content provider to the end user.

In order to provide these services, América Móvil has licenses, permits and concessions (collectively referred to herein as “licenses”) to build, install, operate and exploit public and/or private telecommunications networks and provide miscellaneous telecommunications services (mostly mobile and fixed voice and data services) and to operate frequency bands in the radio-electric spectrum for point-to-point and point-to-multipoint microwave links. The Company holds licenses in the 24 countries where it has networks, and such licenses have different dates of expiration through 2056.

Certain licenses require the payment to the respective governments of a share in sales determined as a percentage of revenues from services under concession. The percentage is set as either a fixed rate or in some cases based on certain size of the infrastructure in operation.

The corporate offices of América Móvil are located in Mexico City, Mexico, at Lago Zurich 245, Colonia Ampliación Granada, Delegación Miguel Hidalgo, 11529, Mexico City, Mexico.

The accompanying consolidated financial statements were approved for their issuance by the Company’s Chief Financial Officer on April 9, 2019, and subsequent events have been considered through that date.

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Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices

2. Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices

a) Basis of preparation

The accompanying consolidated financial statements have been prepared in conformity with International Financial Reporting Standards, as issued by the International Accounting Standards Board (“IASB”) (hereafter referred to as IFRS).

The consolidated financial statements have been prepared on the historical cost basis, except for the derivative financial instruments, the trust assets of post-employment and other employee benefit plans and the investments in equity at fair value through OCI which are presented at their market value.

Effectively July 1, 2018, the Argentinian economy is considered to be hyperinflationary in accordance with the criteria in IAS 29 “Financial Reporting in Hyperinflationary Economies” (“IAS 29”). Accordingly, for the Argentina subsidiaries, we have included, adjustments for hyperinflation and reclassifications as is required by the standard for purposes of presentation of IFRS in the consolidated financial statements.

The preparation of these consolidated financial statements under IFRS requires the use of critical estimates and assumptions that affect the amounts reported for certain assets, liabilities, income and expenses. It also requires that management exercise judgment in the application of the Company’s accounting policies. Actual results could differ from these estimates and assumptions.

The Mexican peso is the functional currency of the Company’s Mexican operations and the consolidated reporting currency of the Company.

i) Changes in Accounting Policies and Disclosures

The Company applied IFRS 15 “Revenue from Contracts with Customers” (IFRS 15) and IFRS 9 “Financial Instruments” (IFRS 9) for the first time effective January 1, 2018. The nature and effect of the changes as a result of adoption of these new accounting standards are described below.

The accounting policies applied in the preparation of the consolidated financial statements for the year ended December 31, 2018 are consistent with those used in the preparation of the Company´s consolidated annual financial statements for the years ended December 31, 2017 and 2016, with the exception of the following new standards and amendments to existing standards issued by the IASB, which were mandatory for annual periods beginning on or after January 1, 2018:

a) IFRS 15 Revenue from contract with customer

In May 2014, the IASB issued the new standard IFRS 15. The new standard for revenue recognition aims at standardizing the multitude of regulations previously included in various standards, and may require more judgment and estimates than with the revenue recognition processes that were required under the previously existing revenue recognition standards

IFRS 15 supersedes IAS 11 Construction Contracts, IAS 18 Revenue and related Interpretations and it applies, with limited exceptions, to all revenue arising from contracts with customers. IFRS 15 establishes a five-step model to account for revenue arising from contracts with customers and requires that revenue be recognized at an amount that reflects the consideration to which an entity expects to be entitled in exchange for transferring goods or services to a customer.

IFRS 15 requires entities to exercise judgment, taking into consideration all of the relevant facts and circumstances when applying each step of the model to contracts with their customers. The standard also specifies the accounting for the incremental costs of obtaining a contract and the costs directly related to fulfilling a contract. In addition, the standard requires relevant disclosures.

The Company adopted IFRS 15 using the modified retrospective method of adoption with the date of initial application on January 1, 2018. Under this method, the standard can be applied either to all contracts at the date of initial application or only to contracts that are not completed at this date. The Company elected to apply the standard to all contracts as of January 1, 2018.

The cumulative effect of initially applying IFRS 15 was recognized at the date of initial application as an adjustment to the opening balance of retained earnings. Therefore, the comparative information was not restated and continues to be reported under IAS 11, IAS 18 and related Interpretations. The most significant changes in the implementation of IFRS 15 are the earlier recognition of revenue from the sale of goods, and the capitalization and deferral of the incremental contracts acquisition costs over the expected period of benefit.

The effect of adopting IFRS 15 as of January 1, 2018 was, as follows:

	Reference		Increase
Assets:
Subscribers, distributors, recoverable taxes, contract assets and other, net		(a), (b), (c)	Ps.	31,261,436
Liabilities:
Current liabilities		(c)	Ps.	562,651
Deferred income taxes		(d)		8,725,841
			Ps.	9,288,492
Equity:
Retained earnings		(a), (b), (c), (d)		21,454,504
Non-controlling interests				518,440
Total equity				21,972,944
Total liabilities and equity			Ps.	31,261,436

Set out below are, the impacts of adopting IFRS 15 on the Company´s consolidated financial statements for the year ended December 31, 2018:

	Reference		As reported			Figures without adoption of IFRS 15			Adjustments
Operating revenues:
Revenues services		(a), (b)	Ps.	863,647,642		Ps.	881,530,167		Ps.	(17,882,525	)
Sales of equipment		(a), (b)		174,560,039			158,721,765			15,838,274
				1,038,207,681			1,040,251,932			(2,044,251	)
Operating costs and expenses:
Cost of sales and services			Ps.	508,822,430		Ps.	509,100,174		Ps.	(277,744	)
Commercial, administrative and general and other expenses		(c)		234,115,500			240,010,631			(5,895,131	)
Depreciation and amortization				155,712,580			155,712,580			—
				898,650,510			904,823,385			(6,172,875	)
				139,557,171			135,428,547			4,128,624
Financial items, net				38,563,536			38,356,359			207,177
Equity interest in net result of associated companies				267			267			—
Income tax		(d)		46,477,079			45,496,698			980,381
Non-controlling interests				(1,950,626	)		(1,950,626	)		—
Net profit for the year			Ps.	52,566,197		Ps.	49,625,131		Ps.	2,941,066

	Reference		As reported		Balances without adoption of IFRS 15		Adjustments
Assets:
Current assets:
Cash and cash equivalents and equity investments at fair value			Ps.	70,675,896	Ps.	70,675,896	Ps.	—
Subscribers, distributors, recoverable taxes, contract assets and other, net		(a), (b), (c)		216,226,920		185,303,634		30,923,286
Other current assets, net				62,152,708		62,152,708		—
Total current assets				349,055,524		318,132,238		30,923,286
Non-current assets:
Property, plant and equipment, net				640,000,720		640,000,720		—
Intangibles and other assets, net				424,485,276		424,485,276		—
Subscribers, distributors, recoverable taxes, contract assets and other, net		(a), (b), (c)		15,681,872		10,244,609		5,437,263
Total assets			Ps.	1,429,223,392	Ps.	1,392,862,843	Ps.	36,360,549
Liabilities and equity:
Current liabilities:
Short-term debt and current portion of long-term debt			Ps.	96,230,634	Ps.	96,230,634	Ps.	—
Accounts payable and other liabilities				338,116,412		337,448,940		667,472
Deferred revenues				32,743,843		32,315,690		428,153
Total current liabilities				467,090,889		465,995,264		1,095,625
Non-current-liabilities:
Long-term debt				542,691,819		542,691,819		—
Deferred income taxes		(d)		24,573,441		15,382,500		9,190,941
Other liabilities				148,994,821		148,994,821		—
Total liabilities				1,183,350,970		1,173,064,404		10,286,566
Total equity		(d)		245,872,422		219,798,439		26,073,983
Total liabilities and equity			Ps.	1,429,223,392	Ps.	1,392,862,843	Ps.	36,360,549

IFRS 15 Revenues from contracts with customers

IFRS 15 establishes a comprehensive framework for determining when to recognize revenue and how much revenue to recognize. The principle core is that an entity should recognize revenue to depict the transfer of promised goods or services to the customer in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The most significant changes in the implementation of IFRS 15 are as follows:

a. The Company provides fixed and mobile services. These services are offered independently in contracts with customers or together with the sale of handsets (mobile) under the postpaid model. In accordance with IFRS 15, the transaction price should be assigned to the different performance obligations based on their relative standalone selling price.

The Company concluded that regarding the provided services, it has market observable information, to determine the standalone selling price of the services. On the other hand, in the case of the sale of bundled mobile phones sold (including service and handset) by the Company, the allocation of the sales is done based on their relative standalone selling price of each individual component related to the total bundled price. The result is that more equipment revenue is recognized at the moment of a sale and, therefore, less service revenue from the monthly fee are being recognized under the new standard.

The Company concluded as well that the provided services are satisfied over the time of the contract period, given that the customer simultaneously receives and consumes the benefits provided by the Company.

Such service bundles, voice and data, accomplish the criteria mentioned in IFRS 15 of being substantially similar and of having the same transfer pattern which is why the Company concluded that the revenue from these different services offered to its customers are considered as a single performance obligation with revenue being recognized over time, except for sales of equipment.

b. Under IFRS 15, for those contracts with customers in which generally the sale of equipment and other electronic equipment is a single performance obligation, the Company recognizes the revenue at the moment when it transfers control to the customer which generally occurs when such goods are delivered. The latter is consistent with the previous accounting policy.

c. The Company pays commissions to its distributors for obtaining new customers; such commissions were expensed as incurred under the previous accounting. Under IFRS 15, commissions are considered incremental contract acquisition costs that are capitalized and are amortized over the expected period of benefit, during the average duration of customer contracts.

d. In addition to the adjustments described above, other items such as deferred taxes and non-controlling interests were adjusted to retained earnings as necessary upon adoption of IFRS 15 as of January 1, 2018.

b) IFRS 9, Financial Instruments

IFRS 9 was issued in July 2014 and replaced IAS 39 Financial Instruments and relates to the classification and measurement of financial instruments, impairment; and hedge accounting.

The Company applied IFRS 9 prospectively, with an initial application date of January 1, 2018. The Company has not restated the comparative information, which continues to be reported under IAS 39.

The effect of adopting IFRS 9 as of January 1, 2018 was, as follows:

	Adjustments		January 1, 2018
Assets
Trade receivables		(a)	Ps.	(2,400,783	)
Deferred tax assets		(b)		544,628
Total assets			Ps.	(1,856,155	)
Equity
Retained earnings		(a), (b)	Ps.	(1,856,155	)
Total adjustment on equity			Ps.	(1,856,155	)

IFRS 9 sets out the requirements for recognizing and measuring financial assets and financial liabilities. This new standard includes:

a) Impairment

The adoption of IFRS 9 has fundamentally changed the Company´s accounting for impairment losses for financial assets by replacing IAS 39’s incurred loss approach with a forward-looking expected credit loss approach. IFRS 9 requires the Company to recognize an allowance for expected credit loss for all debt instruments not held at fair value through profit or loss and contract assets.

Upon adoption of IFRS 9 the Company recognized an impairment on the Company´s trade receivables at fair value Ps 2,400,783 as of January 1, 2018, which resulted in a decrease in Retained earnings. There were no impairment losses that impacted the carrying amount of debt instruments at fair value through OCI in the statements of financial position, which remains at fair value.

b) Other adjustments

In addition to the adjustments described above, other items such as deferred taxes and non-controlling interests were adjusted to retained earnings as necessary upon adoption of IFRS 9 as of January 1, 2018.

The new requirements of IFRS 9 regarding hedge accounting do not have an effect on the consolidated financial statements as hedge accounting is not applied. The Company continues to consider the hedges to be under IAS 39 as allowed by IFRS 9.

Compared to IAS 39, the application of IFRS 9 had an immaterial effect on the consolidated financial statements in 2018, including classification of financial assets and liabilities.

c) Impact of the application for hyperinflation in Argentina

In the recent years, the Argentina economy has shown high rates of inflation. Although inflation data has not been consistent in recent years and several indexes have coexisted, inflation in Argentina indicates that the three-year cumulative inflation rate recently exceeded 100%, which is the quantitative reference established by IAS 29. As a result, Argentina is considered a hyperinflationary economy in 2018 and the Company applies hyper-inflation accounting to its subsidiary whose functional currency is the Argentine peso for financial information for periods ending on or after July 1, 2018, however the calculation of the accumulative impact was measured as of January 1, 2019.

In order to restate for hyperinflation its financial statements, the subsidiary used the series of indices defined by resolution JG No. 539/18 issued by the “Federación Argentina de Consejos Profesionales de Ciencias Económicas” (FACPCE), based on the National Consumer Price Index (IPC) published by the Instituto Nacional de Estadística y Censos (INDEC) of the Argentine Republic and the Wholesale Internal Price Index (IPIM) published by FACPCE. The cumulative index December 31, 2018 is 184.255, while on an annual inflation for 2018 is 48%.

The main implications are as follows:

• Adjustment of the historical cost of non-monetary assets and liabilities and equity items from their date of acquisition, or the date of inclusion in the consolidated statements of financial position, to the end of the year, in order to reflect changes in the currency’s purchasing power caused by inflation.

• The gain on the net monetary position caused by the impact of inflation in the year is included in the consolidated statements of comprehensive income as part of the caption “Valuation of derivatives, interest cost from labor obligations and other financial items, net. Items in the income statements and in the statements of cash flows are adjusted by the inflation index since their origination, with a balancing entry, and a reconciling item in the statements of cash flows, respectively.

• All items in the financial statements of the Argentine company are translated at the closing exchange rate, which at December 31, 2018 was 0.5221 argentine pesos per mexican peso.

• Financial information for financial years prior to 2018 are not restated.

The main impact in the consolidated financial statements of the Company in 2018 of applying hyperinflationary accounting under IAS 29 are shown below:

	Impact of the application of hyperinflation adjustments in 2018
Impact in:
Operating revenues		Ps. 6,286,140
Operating loss		(1,423,252	)
Financial loss		(1,289,317	)
Gain on net monetary positions		4,429,145
Income tax		(770,928	)
Net profit for the year		945,647
Current assets		1,866,674
Non-current assets		19,796,073
Total liabilities		4,890,166
Total equity (i)		16,772,581

(i) This total includes the initial effect of hyperinflation of Ps. 15,826,934 and the net effect on results due to the hyperinflation of the year of Ps. 945,647.

ii) Basis of consolidation

The consolidated financial statements include the accounts of América Móvil, S.A.B. de C.V. and those subsidiaries over which the Company exercises control. The consolidated financial statements for the subsidiaries were prepared for the same period as the Company´s and applying consistent accounting policies. All of the subsidiary companies operate in the telecommunications sector or related.

Subsidiaries are entities over which the Company has control. Control is achieved when the Company has power over the investee, when it is exposed to, or has rights to, variable returns from its involvement with the investee, and has the ability to use its power over the investee to affect the amount of the investor’s returns. Subsidiaries are consolidated on a line by line basis from the date which control is achieved by the Company. The Company reassesses whether or not it controls an investee if facts and circumstances indicate that there are changes to one or more of the elements of control.

Changes in the Company’s ownership interests in a subsidiary that do not result in the Company losing control over the subsidiary are accounted for as equity transactions. The carrying amounts of the equity attributable to owners of the parent and non-controlling interests are adjusted to reflect the changes in their relative interests in the subsidiary. Any difference between the carrying amount of the non-controlling interests and the fair value of the consideration paid or received in the transaction is recognized directly in the equity attributable to the owners.

Subsidiaries are deconsolidated from the date which control ceases. When the Company ceases to have control over a subsidiary, it derecognizes the assets (including any goodwill) and liabilities of the subsidiary at their carrying amounts, derecognizes the carrying amount of non-controlling interests in the former subsidiary and recognizes the fair value of any consideration received from the transaction. Any retained interest in the former subsidiary is then remeasured to its fair value.

All intra-Company balances and transactions, and any unrealized gains and losses arising from intra-Company transactions, are eliminated in preparing the consolidated financial statements.

Non-controlling interests represent the portion of profits or losses and net assets not held by the Company. Non-controlling interests are presented separately in the consolidated statements of comprehensive income and in equity in the consolidated statements of financial position separately from Company’s own equity.

Associates:

An associate is an entity over which the Company has significant influence. Significant influence is the power to participate in the financial and operating policy decisions of the investee but does not have control or joint control over those decisions.

The Company’s investment in associates includes goodwill identified on acquisition, net of any accumulated impairment losses.

The investments in associated companies in which the Company exercises significant influence are accounted for using the equity method, whereby Company recognizes its share in the net profit (losses) and equity of the associate.

The results of operations of the subsidiaries and associates are included in the Company’s consolidated financial statements beginning as of the month following their acquisition and its share of other comprehensive income after acquisition is recognized directly in other comprehensive income.

The Company assesses at each reporting date whether there is objective evidence that investment in associates is impaired. If so, the Company calculates the amount of impairment as the difference between the recoverable amount of the associate and its carrying value.

The equity interest in the most significant subsidiaries at December 31, 2017 and 2018 is as follows:

Company name	Country		Equity interest at December 31
			2017			2018
Subsidiaries:
América Móvil B.V. a)		Netherlands		100.0	%		100.0	%
Compañía Dominicana de Teléfonos, S.A. (“Codetel”) b)		Dominican Republic		100.0	%		100.0	%
Sercotel, S.A. de C.V. a)		Mexico		100.0	%		100.0	%
Radiomóvil Dipsa, S.A. de C.V. and subsidiaries (“Telcel”) b)		Mexico		100.0	%		100.0	%
Puerto Rico Telephone Company, Inc. b)		Puerto Rico		100.0	%		100.0	%
Servicios de Comunicaciones de Honduras, S.A. de C.V. (“Sercom Honduras”) b)		Honduras		100.0	%		100.0	%
TracFone Wireless, Inc. (“TracFone”) b)		USA		100.0	%		100.0	%
Claro S.A. (Claro Brasil) b)		Brazil		97.7	%		98.2	%
Telecomunicaciones de Guatemala, S.A. (“Telgua”) b)		Guatemala		99.3	%		99.3	%
Empresa Nicaragüense de Telecomunicaciones, S.A. (“Enitel”) b)		Nicaragua		99.6	%		99.6	%
Compañía de Telecomunicaciones de El Salvador, S.A. de C.V. (“CTE”) b)		El Salvador		95.8	%		95.8	%
Comunicación Celular, S.A. (“Comcel”) b)		Colombia		99.4	%		99.4	%
Telmex Colombia, S.A. b)		Colombia		99.3	%		99.3	%
Consorcio Ecuatoriano de Telecomunicaciones, S.A. (“Conecel”) b)		Ecuador		100.0	%		100.0	%
AMX Argentina, S.A. b)		Argentina		100.0	%		100.0	%
AMX Paraguay, S.A. b)		Paraguay		100.0	%		100.0	%
AM Wireless Uruguay, S.A. b)		Uruguay		100.0	%		100.0	%
Claro Chile, S.A. b)		Chile		100.0	%		100.0	%
América Móvil Perú, S.A.C b)		Peru		100.0	%		100.0	%
Claro Panamá, S.A. b)		Panamá		100.0	%		100.0	%
Teléfonos de México, S.A.B. de C.V. b)		Mexico		98.8	%		98.8	%
Telekom Austria AG b)		Austria		51.0	%		51.0	%

a) Holding companies

b) Operating companies of mobile and fixed services

iii) Basis of translation of financial statements of foreign subsidiaries and associated companies

The operating revenues of foreign subsidiaries jointly represent approximately 72%, 74% and 73% of consolidated operating revenues of 2016, 2017 and 2018, respectively, and their total assets jointly represent approximately 81% and 80% of consolidated total assets at December 31, 2017 and 2018, respectively.

The financial statements of foreign subsidiaries have been prepared under or translated to IFRS in the respective local currency (which is their functional currency) and then translated into the Company´s reporting currency as follows:

• all monetary assets and liabilities were translated at the closing exchange rate of the period;

• all non-monetary assets and liabilities at the closing exchange rate of the period;

• equity accounts are translated at the exchange rate at the time the capital contributions were made and the profits were generated;

• revenues, costs and expenses are translated at the average exchange rate of the period, except for the operations of the subsidiaries in Argentina; whose economy is considered hyperinflationary since 2018;

• the resulting difference from the translation process is recognized in equity in the caption Cumulative translation adjustment;

• the consolidated statements of cash flows presented using the indirect method were translated using the weighted-average exchange rate for the applicable period (except for Argentina), and the resulting difference is shown in the consolidated statements of cash flows under the heading “Adjustment to cash flows due to exchange rate fluctuations, net”.

The basis of translation for the operations of the subsidiaries in Argentina are described in Note 2i, c)

The difference resulting from the translation process is recognized in equity in the caption “Effect of translation of foreign entities”. At December 31, 2017 and 2018, the cumulative translation adjustment was Ps. 7,866,158 and Ps. (53,357,300), respectively.

b) Revenue recognition

The Company revenues are derived principally from providing the following telecommunications services and products: wireless voice, wireless data and value-added services, fixed voice, fixed data, broadband and IT services, Pay TV and over-the-top (“OTT”) services.

The wireless voices services are offered under a variety of plans. In addition, the Company often bundle wireless data telecommunications services together with voices services. Monthly rent in post- paid is billed based on the associated plan o package rates, corresponding to when the services are provided.

As part the wireless data services, the Company offer value-added services that include Internet access, messaging and other wireless entertainment and corporative services, Revenue from such services are recognized at the time they are provided, on the date the installation or when the services are downloaded. In addition, the Company offer other wireless services, including wireless security services, mobile payments solutions, machine-to-machine services, mobile banking, virtual private network (“VPN”) services, video calls and Personal Communication Services (“PCS”).

The fixed voices services include local, domestic and international long-distance and public telephone services, under a variety of plans, specifically tailored to our residential and corporate clients. Revenue from the local services are derived from the monthly rent for services and the long-distances revenues are recognized at the time the service is provided.

The Company offer data services, including data centers, data administration and hosting services to our residential and corporate clients under a variety of plans. These revenues are recognized at the time the service is provided.

The residential broadband access are typically bundled with voice services and are competitively priced as a function of the desired or available speed. As a complement to these services, the Company offer a number of products such as home networking and smart home services. In addition, The Company provide different IT solutions for small business and large corporations.

The Company offer Pay TV through cable and satellite TV subscriptions to both retail and corporate customers under a variety of plans. These services are offered through individual subscription plans as well as in bundled packages of services, along with broadband, fixed voice and wireless services. In addition, the Company sell video, audio and other media content that is delivered through the internet directly from the content provider to the viewer or end user. These revenues are recognized at the time the service is provided.

The Company sells to its customers bundles of different services (fixed line, mobile, broadband internet, streaming and pay TV, among others) which elements are evaluated to determine if it is necessary to separate the different identifiable components and apply the income recognition policy corresponding to each element.

Total package revenue is allocated among the identified elements based on their respective standalone selling prices.

Determining standalone selling prices for each identified element requires estimates that are complex due to the nature of the business. A change in estimates of standalone selling prices could affect the apportionment of revenue among the elements and, as a result, the timing of recognition of revenues.

Transaction prices are allocated to the performance obligations by reference to the relative stand-alone selling prices of the products and services. The stand-alone selling prices of products are based on the market prices whereas the standalone selling prices of services are available separately, as services are also offered on a stand-alone basis, i.e. without hardware.

Some subsidiaries have loyalty programs where the Company awards credits customer credit awards referred as “points”. The customer can redeem accrued “points” for awards such as devices, accessories or airtime. The Company provides all awards. The consideration allocated to the award credits is identified as a separate performance obligation; the corresponding liability of the award credits is measured at its fair value. The consideration allocated to award credits amount is recognized as a contract liability until the points are redeemed. Revenue is recognized upon redemption of products by the customer.

c) Cost of sales

The cost of mobile equipment and computers is recognized at the time the client and distributor receives the device that is when the control is are transferred to the customer.

d) Cost of services

The cost of services represents the costs incurred to properly deliver the services to the customers, it includes the network operating costs and licenses related costs and is accounted at the moment in which such services are provided.

e) Commissions to distributors

The Company pays commissions to its distributors different than those that acquire customers. Such commissions are recognized in “commercial, administrative and general expenses” in the consolidated statements of comprehensive income at the time in which the distributor either reports an activation or reaches certain number of lines activated or obtained at a certain point of time.

f) Cash and cash equivalents

Cash and cash equivalents represent bank deposits and liquid investments with maturities of less than three months. These amounts are stated at cost plus accrued interest, which is similar to their market value.

The Company also maintains restricted cash held as collateral to meet certain contractual obligations. Restricted cash is presented as part of “Other assets” within other non-current financial assets given that the restrictions are long-term in nature (See Note 9).

g) Equity investments at fair value through OCI and other short-term investments

Equity investments at fair value through OCI and other short-term investments are primarily composed of equity investments and other short-term financial investments. Amounts are initially recorded at their estimated fair value. Fair value adjustments for equity investments are recorded through other comprehensive income, while fair value adjustments for other short-term investments are recorded in the Consolidated Statements of Comprehensive Income as they occur.

h) Inventories

Inventories are initially recognized at historical cost and are valued using the average cost method without exceeding their net realizable value.

The estimate of the realizable value of inventories on-hand is based on their age and turnover.

i) Business combinations and goodwill

Business combinations are accounted for using the acquisition method, which in accordance with IFRS 3, “Business acquisitions”, consists in general terms as follows:

(i) Identify the acquirer

(ii) Determine the acquisition date

(iii) Value the acquired identifiable assets and assumed liabilities

(iv) Recognize the goodwill or a bargain purchase gain

For acquired subsidiaries, goodwill represents the difference between the purchase price and the fair value of the net assets acquired at the acquisition date. The investment in acquired associates includes goodwill identified on acquisition, net of any impairment loss.

Goodwill is reviewed annually to determine its recoverability or more often if circumstances indicate that the carrying value of the goodwill might not be fully recoverable.

The possible loss of value in goodwill is determined by analyzing the recovery value of the cash generating unit (or the group thereof) to which the goodwill is associated at the time it was originated. If this recoverable amount is lower than the carrying value, an impairment loss is charged to the results of operations. The recoverable amount is determined based on the higher of fair value less cost of disposal or value in use.

For the years ended December 31, 2016, 2017 and 2018, no impairment losses were recognized for the goodwill shown in the Company’s consolidated statements of financial position.

j) Property, plant and equipment

i) Property, plant and equipment are recorded at acquisition cost, net of accumulated depreciation. Depreciation is computed on the cost of the assets using the straight line method, based on the estimated useful lives of the related assets, beginning the month after they become available for use.

Borrowing costs that are incurred for general financing for construction in progress for periods exceeding six months are capitalized as part of the cost of the asset. During 2016, 2017 and 2018 the borrowing costs that were capitalized amounted to Ps. 2,861,307, Ps. 2,875,034 and Ps. 2,020,288 respectively.

In addition to the purchase price and costs directly attributable to preparing an asset in terms of its physical location and condition for operating as intended by management, when required, the cost also includes the estimated costs of dismantling and removal of the asset and for restoration of the site where it is located (See Note 15c).

ii) The net book value of property, plant and equipment is removed from the consolidated statements of financial position at the time the asset is sold or when no future economic benefits are expected from its use or sale. Any gains or losses on the sale of property, plant and equipment represent the difference between net proceeds of the sale and the net book value of the item at the time of sale. These gains or losses are recognized as either other operating income or other operating expenses upon sale.

iii) The Company periodically assesses the residual values, useful lives and depreciation methods associated with its property, plant and equipment. If necessary, the effects of any changes in accounting estimates is recognized prospectively, at the closing of each period, in accordance with IAS 8, “Accounting Policies, Changes in Accounting Estimates and Errors”.

For property, plant and equipment made up of several components with different useful lives, the major individual components are depreciated over their individual useful lives. Maintenance costs and repairs are expensed as incurred.

Annual depreciation rates are as follows:

Network infrastructure	5	%-33%
Buildings and leasehold improvement	2	%-33%
Other assets	10	%-50%

iv) The carrying value of property, plant and equipment is reviewed if there are indicators of impairment in such assets. If an asset’s recovery value is less than the asset’s net carrying value, the difference is recognized as an impairment loss.

During the years ended December 31, 2016, 2017 and 2018, no impairment losses were recognized.

v) Spare parts for network operation is valued using the average cost method, without exceeding its net realizable value.

The valuation of inventory for network considered obsolete, defective or slow-moving, is reduced to their estimated net realizable value. The estimate of the recovery value of inventories is based on their age and turnover.

k) Intangibles

i) Licenses

Licenses to operate wireless telecommunications networks granted by the governments of the countries in which the Company operates are recorded at acquisition cost or at fair value at their acquisition date, net of accumulated amortization. Certain licenses require payments to the governments, such payments are recognized in the cost of service and equipment.

The licenses that in accordance with government requirements are categorized as automatically renewable, for a nominal cost and with substantially consistent terms, are considered by the Company as intangible assets with an indefinite useful life. Accordingly, they are not amortized. Licenses are amortized when the Company does not have a basis to conclude that they are indefinite lived. Licenses are amortized using the straight-line method over a period ranging from 3 to 30 years, which represents the usage period of the assets.

The Company has conducted an internal analysis on the applicability of the International Financial Reporting Interpretation Committee (“IFRIC”) No. 12 (Service Concession Agreements) and has concluded that its concessions are outside the scope of IFRIC 12. To determine the applicability of IFRIC 12, the Company analyzes each concession or group of similar concessions in a given jurisdiction. As a threshold matter, the Company identifies those government concessions that provide for the development, financing, operation or maintenance of infrastructure used to render a public service, and that set out performance standards, mechanisms for adjusting prices and arrangements for arbitrating disputes.

With respect to those services, the Company evaluates whether the grantor controls or regulates (i) what services the operator must provide, (ii) to whom it must provide them and (iii) the applicable price (the “Services Criterion”). In evaluating whether the applicable government, as grantor, controls the price at which the Company provides its services, the Company looks at the terms of the concession agreement according to all applicable regulations. If the Company determines that the concession under analysis meets the Services Criterion, then the Company evaluates whether the grantor would hold a significant residual interest in the concession’s infrastructure at the end of the term of the arrangement.

ii) Trademarks

Trademarks are recorded at their fair value at the valuation date when acquired. The useful lives of trademarks are assessed as either definite or indefinite. Trademarks with finite useful lives are amortized using the straight-line method over a period ranging from 1 to 10 years. Trademarks with indefinite useful lives are not amortized, but are tested for impairment annually at the cash generating unit level. The assessment of indefinite life is reviewed annually to determine whether the indefinite life continues to be supportable, if not, the change in useful life from indefinite to definite is made on a prospective basis.

iii) Irrevocable rights of use

Irrevocable rights of use are recognized according to the amount paid for the right and are amortized over the period in which they are granted.

The carrying values of the Company’s licenses and trademarks are reviewed annually and whenever there are indicators of impairment in the value of such assets. When an asset’s recoverable amount, which is the higher of the asset’s fair value, less disposal costs and its value in use (the present value of future cash flows), is less than the asset’s carrying value, the difference is recognized as an impairment loss.

iv) Customer relationships

The value of customer relations is determined and valued at the time that a new subsidiary is acquired, as determined by the Company with the assistance of independent appraisers, and is amortized on a 5 year period.

During the years ended December 31, 2016, 2017 and 2018, no impairment losses were recognized for licenses, trademarks, irrevocable rights of use or customer relationships.

l) Impairment in the value of long-lived assets

The Company assesses the existence of indicators of impairment in the carrying value of long-lived assets, investments in associates, goodwill and intangible assets according to IAS 36 “Impairment of assets”. When there are such indicators, or in the case of assets whose nature requires an annual impairment analysis (goodwill and intangible assets with indefinite useful lives), the Company estimates the recoverable amount of the asset, which is the higher of its fair value, less disposal costs, and its value in use. Value in use is determined by discounting estimated future cash flows, applying a pre-tax discount rate that reflects the time value of money and taking into consideration the specific risks associated with the asset. When the recoverable amount of an asset is below its carrying value, impairment is considered to exist. In this case, the carrying value of the asset is reduced to the asset’s recoverable amount, recognizing the loss in results of operations for the respective period. Depreciation and/or amortization expense of future periods is adjusted based on the new carrying value determined for the asset over the asset’s remaining useful life. Impairment is computed individually for each asset. Recoverable amount is determined for an individual asset, unless the asset does not generate cash inflows that are largely independent of those from other assets or group of assets.

In the estimation of impairments, the Company uses the strategic plans established for the separate cash-generating units to which the assets are assigned. Such strategic plans generally cover a period from 3 to 5 years. For longer periods, beginning in the fifth year, projections are based on such strategic plans while applying a constant or declining expected perpetual growth rate.

Key assumptions used in value in use calculations

The forecasts are made in real terms (net of inflation) and in the functional currency of the subsidiary as of December 31, 2018. Financial forecasts, premises and assumptions are similar to what any other market participant in similar conditions would consider.

Local synergies, that any other market participant would not have taken into consideration to prepare similar forecasted financial information, have not been included.

The assumptions used to develop the financial forecasts were validated for each of the cash generating units (“CGUs”), typically identified by country and by service (in the case of Mexico) taking into consideration the following:

• Current subscribers and expected growth.

• Type of subscribers (prepaid, postpaid, fixed line, multiple services)

• Market environment and penetration expectations

• New products and services

• Economic environment of each country

• Expenses for maintaining the current assets

• Investments in technology for expanding the current assets

• Market consolidation and synergies

The foregoing forecasts could differ from the results obtained through time; however, the Company prepares its estimates based on the current situation of each of the CGUs.

The recoverable amounts are based on value in use. The value in use is determined based on the method of discounted cash flows. The key assumptions used in projecting cash flows are:

• Margin on EBITDA is determined by dividing EBITDA (operating income plus depreciation and amortization) by total revenues.

• Margin on CAPEX is determined by dividing capital expenditures (“CAPEX”) by total revenues.

• Pre-tax weighted average cost of capital (“WACC”) is used to discount the projected cash flows.

As discount rate, the Company uses the WACC which was determined for each of the cash generating units and is described in the following paragraphs.

The estimated discount rates to perform the IAS 36 “Impairment of assets”, impairment test for each CGU consider market participants assumptions. Market participants were selected taking into consideration size, operations and characteristics of the business that were similar to those of Company.

The discount rates represent the current market assessment of the risks specific to each CGU, taking into consideration the time value of money and individual risks of the underlying assets that have not been incorporated in the cash flow estimates. The discount rate calculation is based on the specific circumstances of the Company and its operating segments. The WACC takes into account both debt and equity costs. The cost of equity is derived from the expected return on investment for each GCU. The cost of debt is based on the interest-bearing borrowings the Company is obliged to service. Segment-specific risk is incorporated by applying individual beta factors.

The beta factors are evaluated annually based on publicly available market data.

Market participant assumptions are important because, not only do they include industry data for growth rates, but also management assesses how the CGU’s position, relative to its competitors, might change over the forecasted period.

The most significant forward-looking estimates used for the 2017 and 2018 impairment evaluations are shown below:

	Average margin on EBITDA	Average margin on CAPEX	Average pre-tax discount rate (WACC)
2017:
Europe (7 countries)	25.59% - 52.46%	7.34% - 14.97%	9.06% - 19.04%
Brazil (fixed line, wireless and TV)	35.28%	22.13%	11.71%
Puerto Rico	23.31%	8.31%	4.42%
Dominican Republic	45.79%	15.55%	19.23%
Mexico (fixed line and wireless)	35.48%	8.72%	16.13%
Ecuador	37.83%	10.07%	23.57%
Peru	29.64%	16.75%	13.61%
El Salvador	40.36%	17.99%	25.14%
Chile	22.04%	12.45%	6.15%
Colombia	41.93%	19.88%	19.06%
Other countries	9.16% - 48.18%	0.43% - 23.43%	7.89% - 24.28%

	Average margin on EBIDTA		Average margin on CAPEX		Average pre-tax discount rate (WACC)las
2018:
Europe (7 countries)		22.13% - 41.51%		8.13% - 19.40%		8.36% - 22.08%
Brazil (fixed line, wireless and TV)		36.43%		21.88%		10.38%
Puerto Rico		23.86%		9.89%		4.81%
Dominican Republic		48.64%		18.43%		17.66%
Mexico (fixed line and wireless)		36.33%		7.93%		16.30%
Ecuador		39.83%		11.26%		24.45%
Peru		30.29%		19.95%		11.52%
El Salvador		45.36%		22.61%		18.01%
Chile		25.91%		14.99%		6.62%
Colombia		45.01%		17.14%		20.29%
Other countries		7.90% - 45.91%		0.61% - 23.96%		9.97% - 31.63%

Sensitivity to changes in assumptions:

The implications of the key assumptions for the recoverable amount are discussed below:

Margin on CAPEX- The Company performed a sensitivity analysis by increasing its CAPEX by 5% and maintaining all other assumptions the same. The sensitivity analysis would require the Company to adjust the amount of its long-lived assets in its CGUs with potential impairment of approximately Ps. 1,558,823

WACC- Additionally, should the Company increase by 50 base points in WACC per CGU and maintain all other assumptions the same, the carrying amount of the long-lived assets, would be impaired by approximately Ps. 1,135,854.

m) Leases

The determination of whether an agreement is, or contains, a lease is based on the substance of the agreement and requires the Company to assess if performance of the agreement is dependent on the use of a specific asset and whether the agreement transfers the right of use of the asset to the Company.

Operating leases

Leases under which the lessor retains a significant portion of the risks and benefits inherent to the ownership of the leased asset are considered operating leases. Payments made under operating lease agreements are charged to results of operations on a straight-line basis over the rental period.

Finance leases

Lease agreements that substantially transfer all the risks and benefits of ownership of the leased assets to the Company are accounted for as finance leases. Accordingly, upon commencement of the lease, the asset, which is classified based on its nature, and its associated debt are recorded at the lower of the fair value of the leased asset or the present value of the lease payments. Finance lease payments are apportioned between the reduction of lease liability and the finance cost so that a constant interest rate is determined on the outstanding liability balance. Finance costs are charged to results of operations over the life of the agreement.

n) Financial assets and liabilities

Financial assets

Initial recognition and measurement

Financial assets are classified, at initial recognition, as subsequently measured at amortized cost, fair value through other comprehensive income (OCI), and fair value through profit or loss.

The classification of financial assets at initial recognition depends on the financial asset’s contractual cash flow characteristics and the Company’s business model for managing them, with the exception of trade receivables that do not contain a significant financing component or for which the Company has applied the practical expedient, the Company initially measures a financial asset at its fair value plus, in the case of a financial asset not at fair value through profit or loss, transaction costs.

– Subsequent measurement

For purposes of subsequent measurement, financial assets are classified in four categories:

• Financial assets at amortized cost (debt instruments)

• Financial assets at fair value through OCI with recycling of cumulative gains and losses (debt instruments)

• Financial assets designated at fair value through OCI with no recycling of cumulative gains and losses upon derecognition (equity instruments)

• Financial assets at fair value through profit or loss

Financial assets at amortized cost (debt instruments)

The Company measures financial assets at amortized cost if both of the following conditions are met:

• The financial asset is held within a business model with the objective to hold financial assets in order to collect contractual cash flows, and

• The contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding

Financial assets at amortized cost are subsequently measured using the effective interest (EIR) method and are subject to impairment. Gains and losses are recognized in profit or loss when the asset is derecognized, modified or impaired.

The Company’s financial assets at amortized cost includes cash and cash equivalents, loans and receivables.

Financial assets at fair value through OCI with recycling of cumulative gains and losses (debt instruments)

The Company measures debt instruments at fair value through OCI if both of the following conditions are met:

• The financial asset is held within a business model with the objective of both holding to collect contractual cash flows and selling, and

• The contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding

For debt instruments at fair value through OCI, interest income, foreign exchange revaluation and impairment losses or reversals are recognized in the statements of profit or loss and computed in the same manner as for financial assets measured at amortized cost. The remaining fair value changes are recognized in OCI. Upon derecognition, the cumulative fair value change recognized in OCI is recycled to profit or loss.

Financial assets designated at fair value through OCI with no recycling of cumulative gains and losses upon derecognition (equity instruments)

Upon initial recognition, the Company can elect to classify irrevocably its equity investments as equity instruments designated at fair value through OCI when they meet the definition of equity under IAS 32 Financial Instruments: Presentation and are not held for trading. The classification is determined on an instrument by instrument basis.

Gains and losses on these financial assets are never recycled to profit or loss. Dividends are recognized as other income in the statements of profit or loss when the right of payment has been established, except when the Company benefits from such proceeds as a recovery of part of the cost of the financial asset, in which case, such gains are recorded in OCI. Equity instruments designated at fair value through OCI are not subject to impairment assessment.

Financial assets at fair value through profit or loss

Financial assets at fair value through profit or loss include financial assets held for trading, financial assets designated upon initial recognition at fair value through profit or loss, or financial assets mandatorily required to be measured at fair value. Financial assets are classified as held for trading if they are acquired for the purpose of selling or repurchasing in the near term. Derivatives, including separated embedded derivatives, are also classified as held for trading unless they are designated as effective hedging instruments. Financial assets with cash flows that are not solely payments of principal and interest are classified and measured at fair value through profit or loss, irrespective of the business model. Notwithstanding the criteria for debt instruments to be classified at amortized cost or at fair value through OCI, as described above, debt instruments may be designated at fair value through profit or loss on initial recognition if doing so eliminates, or significantly reduces, an accounting mismatch.

Financial assets at fair value through profit or loss are carried in the statements of financial position at fair value with net changes in fair value recognized in the consolidated statements of comprehensive income within “Valuation of derivatives, interest cost from labor obligations and other financial items”.

Derecognition of financial assets

A financial asset is primarily derecognized when:

• The rights to receive cash flows from the asset have expired, or

• The Company has transferred its rights to receive cash flows from the asset or has assumed an obligation to pay the received cash flows in full without material delay to a third party under a ‘pass-through’ arrangement; and either (a) the Company has transferred substantially all the risks and rewards of the asset, or (b) the Company has neither transferred nor retained substantially all the risks and rewards of the asset, but has transferred control of the asset

When the Company has transferred its rights to receive cash flows from an asset or has entered into a passthrough arrangement, it evaluates if, and to what extent, it has retained the risks and rewards of ownership. When it has neither transferred nor retained substantially all the risks and rewards of the asset, nor transferred control of the asset, the Company continues to recognize the transferred asset to the extent of its continuing involvement. In that case, the Company also recognizes an associated liability. The transferred asset and the associated liability are measured on a basis that reflects the rights and obligations that the Company has retained.

Impairment of financial assets

The Company recognizes an allowance for expected credit losses (ECLs) for all debt instruments not held at fair value through profit or loss. ECLs are based on the difference between the contractual cash flows due in accordance with the contract and all the cash flows that the Company expects to receive, discounted at an approximation of the original effective interest rate. The expected cash flows will include cash flows from the sale of collateral held or other credit enhancements that are integral to the contractual terms.

ECLs are recognized in two stages. For credit exposures for which there has not been a significant increase in credit risk since initial recognition, ECLs are provided for credit losses that result from default events that are possible within the next 12-months (a 12-month ECL). For those credit exposures for which there has been a significant increase in credit risk since initial recognition, a loss allowance is required for credit losses expected over the remaining life of the exposure, irrespective of the timing of the default (a lifetime ECL).

For some trade receivables and contract assets based on available information, the Company applies the simplified approach in calculating ECLs. Therefore, the Company does not track changes in credit risk, but instead recognizes a loss allowance based on lifetime ECLs at each reporting date. The Company has established a loss rate approach that is based on its historical credit loss experience, adjusted for forward-looking factors specific to the debtors and the economic environment.

Financial liabilities

Initial recognition

Financial liabilities are classified, at initial recognition, as financial liabilities at fair value through profit or loss, loans and borrowings, payables, or as derivatives designated as hedging instruments in an effective hedge, as appropriate.

All financial liabilities are recognized initially at fair value and, in the case of loans and borrowings and payables, net of directly attributable transaction costs.

The Company’s financial liabilities include trade and other payables, loans and borrowings including bank overdrafts, and derivative financial instruments.

— Subsequent measurement

The measurement of financial liabilities depends on their classification, as described below:

Financial liabilities at fair value through profit or loss financial liabilities at fair value through profit or loss include financial liabilities held for trading and financial liabilities designated upon initial recognition as at fair value through profit or loss. IFRS

Financial liabilities are classified as held for trading if they are incurred for the purpose of repurchasing in the near term. This category also includes derivative financial instruments entered into by the Company that are not designated as hedging instruments in hedge relationships as defined by IFRS 9. Separated embedded derivatives are also classified as held for trading unless they are designated as effective hedging instruments.

Gains or losses on liabilities held for trading are recognized in the statements of profit or loss.

Financial liabilities designated upon initial recognition at fair value through profit or loss are designated at the initial date of recognition, and only if the criteria in IFRS 9 are satisfied. The Company has not designated any financial liability as at fair value through profit or loss.

Loans and borrowings

After initial recognition, interest-bearing loans and borrowings are subsequently measured at amortized cost using the EIR method. Gains and losses are recognized in profit or loss when the liabilities are derecognized as well as through the EIR amortization process.

Amortized cost is calculated by taking into account any discount or premium on acquisition and fees or costs that are an integral part of the EIR. The EIR amortization is included as finance costs in the statements of profit or loss.

Derecognition of financial liabilities

A financial liability is derecognized when the obligation under the liability is discharged, cancelled or expires. When an existing financial liability is replaced by another from the same lender on substantially different terms, or the terms of an existing liability are substantially modified, such an exchange or modification is treated as the derecognition of the original liability and the recognition of a new liability. The difference in the respective carrying amounts is recognized in the statements of profit or loss.

Offsetting of financial instruments

Financial assets and financial liabilities are offset and the net amount is reported in the consolidated statements of financial position if there is a currently enforceable legal right to offset the recognized amounts and there is an intention to settle on a net basis, to realize the assets and settle the liabilities simultaneously.

o) Transactions in foreign currency

Transactions in foreign currency are initially recorded at the prevailing exchange rate at the time of the related transactions. Foreign currency denominated assets and liabilities are subsequently translated at the prevailing exchange rate at the financial statements reporting date. Exchange differences determined from the transaction date to the time foreign currency denominated assets and liabilities are settled or translated at the financial statements reporting date are charged or credited to the results of operations.

In determining the spot exchange rate to use on initial recognition of the related asset, expense or income (or part of it) on the derecognition of a non-monetary asset or non-monetary liability relating to advance consideration, the date of the transaction is the date on which the Company initially recognizes the non-monetary asset or non-monetary liability arising from the advance consideration. If there are multiple payments or receipts in advance, the Company determines the transaction date for each payment or receipt of advance consideration.

The exchange rates used for the translation of foreign currencies against the Mexican peso are as follows:

		Average exchange rate						Closing exchange rate at December 31,
Country or Zone	Currency	2016		2017		2018		2017		2018
Argentina (1)	Argentine Peso (AR$)		1.2632		1.1489		0.7311		1.0610		0.5221
Brazil	Real (R$)		5.3868		5.9346		5.2937		5.9815		5.0797
Colombia	Colombian Peso (COP$)		0.0061		0.0064		0.0065		0.0066		0.0061
Guatemala	Quetzal		2.4548		2.5755		2.5591		2.6940		2.5440
U.S.A. (2)	US Dollar		18.6529		18.9400		19.2397		19.7867		19.6829
Uruguay	Uruguay Peso		0.6206		0.6606		0.6274		0.6869		0.6074
Nicaragua	Cordoba		0.6515		0.6307		0.6097		0.6428		0.6088
Honduras	Lempira		0.8109		0.8007		0.7994		0.8330		0.8031
Chile	Chilean Peso		0.0276		0.0292		0.0300		0.0322		0.0283
Paraguay	Guaraní		0.0033		0.0034		0.0034		0.0035		0.0033
Peru	Sol (PEN$)		5.5232		5.8054		5.8517		6.0976		5.8406
Dominican Republic	Dominican Peso		0.4048		0.3983		0.3876		0.4095		0.3898
Costa Rica	Colon		0.0338		0.0331		0.0332		0.0346		0.0322
European Union	Euro		20.6334		21.3649		22.7101		23.7539		22.5586
Bulgaria	Lev		10.5483		10.9223		11.6110		12.1406		11.5327
Belarus	New Belarusian Ruble		9.3929		9.8087		9.4451		9.9882		9.1319
Croatia	Croatian Kuna		2.7392		2.8619		3.0613		3.1954		3.0435
Macedonia	Macedonian Denar		0.3350		0.3471		0.3688		0.3861		0.3667
Serbia	Serbian Denar		0.1676		0.1762		0.1920		0.2009		0.1907

(1) Year-end rates are used for the translation of revenues and expenses if IAS 29 “Financial Reporting in Hyperinflationary Economies” is applied.

Financial reporting in hyperinflationary economies

Financial statements of Argentina subsidiaries are restated before translation to the reporting currency of the Company and before consolidation in order to reflect the same value of money for all items. Items recognized in the statements of financial position which are not measured at the applicable year-end measuring unit are restated based on the general price index. All non-monetary items measured at cost or amortized cost is restated for the changes in the general price index from the date of transaction or the last hyperinflationary calculation to the reporting date. Monetary items are not restated. All items of shareholders’ equity are restated for the changes in the general price index since their addition or the last hyperinflationary calculation until the end of the reporting period. All items of comprehensive income are restated for the change in a general price index from the date of initial recognition to the reporting date. Gains and losses resulting from the net-position of monetary items are reported in the consolidated statements of operations in financial result in exchange differences. In accordance with IFRS prior year financial statements were not restated.

(2) Includes U.S.A., Ecuador, El Salvador, Puerto Rico and Panama.

As of April 9, 2019, the exchange rate between the US dollar and the Mexican Peso was $18.9701.

p) Accounts payable, accrued liabilities and provisions

Liabilities are recognized whenever (i) the Company has current obligations (legal or assumed) resulting from a past event, (ii) when it is probable the obligation will give rise to a future cash disbursement for its settlement, and (iii) the amount of the obligation can be reasonably estimated.

When the effect of the time value of money is significant, the amount of the liability is determined as the present value of the expected disbursements to settle the obligation. The discount rate is determined on a pre-tax basis and reflects current market conditions at the financial statements´ reporting date and, where appropriate, the risks specific to the liability. Where discounting is used, an increase in the liability is recognized as finance expense.

Contingent liabilities are recognized only when it is probable they will give rise to a future cash disbursement for their settlement.

Also, contingencies are only recognized when they will generate a loss.

q) Employee benefits

The Company has defined benefit pension plans for its subsidiaries Puerto Rico Telephone Company, Teléfonos de Mexico, Claro Brasil, and Telekom Austria. Claro Brasil also has medical plans and defined contribution plans and Telekom Austria provides retirement benefits to its employees under a defined contribution plan. The Company recognizes the costs of these plans based upon independent actuarial computations and are determined using the projected unit credit method. The latest actuarial computations were prepared as of December 31, 2018.

Mexico

Mexican subsidiaries have the obligation to pay seniority premiums to personnel based on the Mexican Federal labor law which also establishes the obligation to make certain payments to personnel who cease to provide services under certain circumstances. Pensions (for Telmex) and seniority premiums are determined based on the salary of employees in their final year of service, the number of years worked at and their age at the moment of retirement.

The costs of pensions, seniority premiums and severance benefits, are recognized based on calculations by independent actuaries using the projected unit credit method using financial hypotheses, net of inflation.

Telmex has established an irrevocable trust fund and makes annual contributions to that fund.

Puerto Rico

In Puerto Rico, the Company has noncontributing pension plans for full-time employees, which are tax qualified as they meet Employee Retirement Income Security Act of 1974 requirements.

The pension benefit is composed of two elements:

(i) An employee receives an annuity at retirement if they meet the rule of 85 (age at retirement plus accumulated years of service). The annuity is calculated by applying a percentage times years of services to the last three years of salary.

(ii) The second element is a lump-sum benefit based on years of service ranging from 9 to 12 months of salary. Health care and life insurance benefits are also provided to retirees under a separate plan (post-retirement benefits).

Brazil

Claro Brasil provides a defined benefit plan and post-retirement medical assistance plan, and a defined contribution plan, through a pension fund that supplements the government retirement benefit for certain employees.

Under the defined benefit plan, the Company makes monthly contributions to the pension fund equal to 17.5% of the employee’s aggregate salary. In addition, the Company contributes a percentage of the aggregate salary base for funding the post-retirement medical assistance plan for the employees who remain in the defined benefit plan. Each employee makes contributions to the pension fund based on age and salary. All newly hired employees automatically adhere to the defined contribution plan and no further admittance to the defined benefit plan is allowed. For the defined contribution plan, see Note 17.

Austria

Telekom Austria provides retirement benefits to its employees under defined contribution and defined benefit plans.

The Company pays contributions to publicly or privately administered pension or severance insurance plans on mandatory or contractual basis. Once the contributions have been paid, the Company has no further payment obligations. The regular contributions are recognized as employee expenses in the year in which they are due.

All other employee benefit obligations provided in Austria are unfunded defined benefit plans for which the Company records provisions which are calculated using the projected unit credit method. The future benefit obligations are measured using actuarial methods on the basis of an appropriate assessment of the discount rate, rate of employee turnover, rate of compensation increase and rate of increase in pensions.

For severance and pensions, the subsidiary recognizes actuarial gains and losses in other comprehensive income. The re-measurement of defined benefit plans relates to actuarial gains and losses only as Telekom Austria holds no plan assets. Interest expense related to employee benefit obligations is reported in “Valuation of derivatives, interests cost from labor obligation and other financial items, net” in the statements of comprehensive income.

Other subsidiaries

For the rest of the Company’s subsidiaries, there are no defined benefit plans or compulsory defined contribution structures. However, certain subsidiaries make contributions to national pension, social security and severance plans in accordance with the percentages and rates established by the applicable social security and labor laws of each country. Such contributions are made to the entities designated by the countries legislation and are recorded as direct labor expenses in the consolidated statements of comprehensive income as they are incurred.

Remeasurements of defined benefit plans, comprising of actuarial gains and losses, the effect of the asset ceiling, excluding net interest and the return on plan assets (excluding net interest), are recognized immediately in the consolidated statements of financial position with a corresponding debit or credit to retained earnings through OCI in the period in which they occur. Re-measurements are not reclassified to profit or loss in subsequent periods.

Past service costs are recognized in profit or loss on the earlier of:

(i) The date of the plan amendment or curtailment, and

(ii) The date that the Company recognizes restructuring-related costs

Net interest on liability for defined benefits is calculated by applying the discount rate to the net defined benefit liability or asset and it is recognized in the “valuation of derivatives, interest cost from labor obligations and other financial items” in the consolidated statements of comprehensive income. The Company recognizes the changes in the net defined benefit obligation under “Cost of sales and services” and “Commercial, administrative and general expenses” in the consolidated statements of comprehensive income.

Paid absences

The Company recognizes a provision for the cost of paid absences, such as vacation time, based on the accrual method.

r) Employee profit sharing

Employee profit sharing is paid by certain subsidiaries of the Company to its eligible employees. The Company has employee profit sharing in Mexico, Ecuador and Peru. In Mexico, employee profit sharing is computed at the rate of 10% on the individual subsidiaries taxable base adjusted for employee profit sharing purposes as provided by law.

Employee profit sharing is presented as an operating expense in the consolidated statements of comprehensive income.

s) Taxes

Income taxes

Current income tax payable is presented as a short-term liability, net of prepayments made during the year.

Deferred income tax is determined using the liability method based on the temporary differences between the tax values of the assets and liabilities and their book values at the consolidated financial statements reporting date.

Deferred tax assets and liabilities are measured using the tax rates that are expected to be in effect in the period when the asset will materialize or the liability will be settled, based on the enacted tax rates (and tax legislation) that have been enacted or substantially enacted at the financial statements reporting date. The value of deferred tax assets is reviewed by the Company at each financial statements reporting date and is reduced to the extent that it is more likely that the Company will not have sufficient future tax profits to allow for the realization of all or a part of its deferred tax assets. Unrecognized deferred tax assets are revalued at each financial statements reporting date and are recognized when it is more likely that there will be sufficient future tax profits to allow for the realization of these assets.

Deferred taxes relating to items recognized in Other Comprehensive Income are recognized together with the concept that generated such deferred taxes. Deferred taxes consequence on unremitted earnings from subsidiaries and associates are considered as temporary differences, when the timing of the reversal of the temporary differences can be controlled and it is probable that the temporary differences will not reverse in the foreseeable future. Taxes withheld on remitted foreign earnings are creditable against Mexican taxes, thus to the extent that a remittance is to be made, the deferred tax would be limited to the incremental difference between the Mexican tax rate and the rate of the remitting country. As of December 31, 2017 and 2018, the Company has not provided for any deferred taxes related to unremitted foreign earnings.

The Company offsets tax assets and liabilities if it has a legally enforceable right to set off current tax assets and current tax liabilities and the deferred tax assets and deferred tax liabilities relate to income taxes levied by the same tax authority.

Sales tax

Revenues, expenses and assets are recognized net of the amount of sales tax, except:

• When the sales tax incurred on a purchase of assets or services is not recoverable from the taxation authority, in which case, the sales tax is recognized as part of the cost of acquisition of the asset or as part of the expense item, as applicable.

• Receivables and payables that are stated with the amount of sales tax included.

The net amount of sales tax recoverable from, or payable to, the tax authorities is included as part of the current receivables or payables in the consolidated statements of financial position unless they are due in more than a year in which case they are classified as non-current.

t) Advertising

Advertising expenses are recognized as incurred. For the years ended December 31, 2016, 2017 and 2018, advertising expenses were Ps. 28,180,538, Ps. 28,718,563 and Ps. 26,255,952 , respectively, and are presented in the consolidated statements of comprehensive income in the caption “Commercial, administrative and general expenses”.

u) Earnings per share

Basic and diluted earnings per share are determined by dividing net profit of the year by the weighted-average number of shares outstanding during the year. In determining the weighted average number of outstanding shares, shares repurchased by the Company have been excluded.

v) Financial risks

The main risks associated with the Company’s financial instruments are: (i) liquidity risk, (ii) market risk (foreign currency exchange risk and interest rate risk) and (iii) credit risk and counterparty risk. The Board of Directors approves the policies submitted by management to mitigate these risks.

i) Liquidity risk

Liquidity risk is the risk that the Company may not meet its financial obligations associated with financial instruments when they are due. The Company’s financial obligations and commitments are included in Notes 14 and 16.

ii) Market risk

The Company is exposed to certain market risks derived from changes in interest rates and fluctuations in exchange rates of foreign currencies. The Company’s debt is denominated in foreign currencies, mainly in US dollars and euros, other than its functional currency. In order to reduce the risks related to fluctuations in the exchange rate of foreign currency, the Company uses derivative financial instruments such as cross-currency swaps and forwards to adjust exposures resulting from foreign exchange currency. The Company does not use derivatives to hedge the exchange risk arising from having operations in different countries.

Additionally, the Company occasionally uses interest rate swaps to adjust its exposure to the variability of the interest rates or to reduce their financing costs. The Company’s practices vary from time to time depending on judgments about the level of risk, expectations of change in the movements of interest rates and the costs of using derivatives. The Company may terminate or modify a derivative financial instrument at any time. See Note 7 for disclosure of the fair value of derivatives as of December 31, 2017 and 2018.

iii) Credit risk

Credit risk represents the loss that could be recognized in case the counterparties fail to comply with their contractual obligations.

The financial instruments that potentially represent concentrations of credit risk are cash and short-term deposits, trade accounts receivable and financial instruments related to debt and derivatives. The Company’s policy is designed in order to limit its exposure to any one financial institution; therefore, the Company’s financial instruments are contracted with several different financial institutions located in different geographic regions.

The credit risk in accounts receivable is diversified because the Company has a broad customer base that is geographically dispersed. The Company continuously evaluates the credit conditions of its customers and generally does not require collateral to guarantee collection of its accounts receivable. The Company monitors on a monthly basis its collection cycle to avoid deterioration of its results of operations.

A portion of the Company’s cash surplus is invested in short- term deposits with financial institutions with high credit ratings.

iv) Sensitivity analysis for market risks

The Company uses sensitivity analyses to measure the potential losses based on a theoretical increase of 100 basis points in interest rates and a 5% fluctuation in exchange rates:

Interest rate

In the event that the Company’s agreed-upon interest rates at December 31, 2018 increased/(decreased) by 100 basis points, the increase in net interest expense would increase/(decrease) by Ps. 32,136,984 and Ps. (31,773,439), respectively.

Exchange rate fluctuations

Should the Company’s debt at December 31, 2018 of Ps. 638,922,453, suffer a 5% increase/(decrease) in exchange rates, the debt would increase/(decrease) by Ps. 3,165,958 and Ps. (10,940,798), respectively.

w) Derivative financial instruments

Derivative financial instruments are recognized in the consolidated statements of financial position at fair value. Valuations obtained by the Company are compared against those of the financial institutions with which the agreements are entered into, and it is the Company’s policy to compare such fair value to a valuation provided by an independent pricing provider in case of discrepancies. Changes in the fair value of derivatives that do not qualify as hedging instruments are recognized immediately in the line “Valuation of derivatives, interest cost from labor obligations and other financial items, net”.

The Company is exposed to interest rate and foreign currency risks, which tries to mitigate through a controlled risk management program that includes the use of derivative financial instruments. The Company principally uses to offset the risk of exchange rate and interest rate fluctuations. Additionally, for the years ended December 31, 2017 certain of the Company’s derivative financial instruments had been designated, and had qualified, as cash flow hedges. The effective portion of gains or losses on the cash flow derivatives is recognized in equity under the heading “Effect for fair value of derivatives”, and the ineffective portion is charged to results of operations of the period.

x) Current versus non-current classification

The Company presents assets and liabilities in its consolidated statements of financial position based on current/non-current classification.

An asset is current when it is either:

(i) Expected to be realized or intended to be sold or consumed in the normal operating cycle.

(ii) Held primarily for the purpose of trading.

(iii) Expected to be realized within twelve months after the reporting period.

(iv) Cash and cash equivalents unless restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period.

A liability is current when:

• It is expected to be settled in the normal operating cycle.

• It is held primarily for the purpose of trading.

• It is due to be settled within twelve months after the reporting period.

• There is no unconditional right to defer the settlement of the liability for at least twelve months after the reporting period.

The Company classifies all other assets and liabilities, including deferred tax assets and liabilities, as non-current.

y) Presentation of consolidated statements of comprehensive income

The costs and expenses shown in the consolidated statements of comprehensive income are presented in combined manner (based on both their function and nature), which allows a better understanding of the components of the Company’s operating income. This classification allows a comparison to the telecommunications industry.

The Company presents operating income in its consolidated statements of comprehensive income since it is a key indicator of the Company’s performance. Operating income represents operating revenues less operating costs and expenses.

The employee benefits expense recognized for the years ended December 31, 2016, 2017 and 2018 of Ps. 46,759,415, Ps. 48,696,331 and Ps. 47,671,143, respectively is presented as “Cost of sales and services” and of Ps. 63,691,855, Ps. 66,920,537 and Ps. 67,936,876, respectively is presented in “Commercial, administrative and general expenses”.

z) Operating segments

Segment information is presented based on information used by management in its decision-making processes. Segment information is presented based on the geographic areas in which the Company operates.

The management of the Company is responsible for making decisions regarding the resources to be allocated to the Company’s different segments, as well as evaluating the performance of each segment. Intersegment revenues and costs, intercompany balances as well as investments in shares in consolidated entities are eliminated upon consolidation and reflected in the “eliminations” column in Note 22.

None of the segments records revenue from transactions with a single external customer amounting to 10% or more of the revenues.

Aa) Convenience translation

At December 31, 2018, amounts in U.S. dollars have been included in the consolidated financial statements solely for the convenience of the reader and amounts this translation is not accordance with IFRS have been translated from Mexican pesos at December 31, 2018 at an exchange rate of Ps. 19.6829 per U.S. dollar, which was the exchange rate at that date. Such translation should not be construed as a representation that the Mexican peso can be converted to U.S. dollars at the exchange rate in effect on December 31, 2018 or any other exchange rate.

Ab) Significant accounting judgments, estimates and assumptions

In preparing its consolidated financial statements, the Company makes estimates concerning a variety of matters. Some of these matters are highly uncertain, and its estimates involve judgments it makes based on the available information. In the discussion below, the Company has identified several of these matters for which its financial statements would be materially affected if either (1) the Company uses different estimates that it could have reasonably used or (2) in the future América Móvil changes its estimates in response to changes that are reasonably likely to occur.

The following discussion addresses only those estimates that the Company considers most important based on the degree of uncertainty and the likelihood of a material impact had it used a different estimate. There are many other areas in which the Company uses estimates about uncertain matters, but the reasonably likely effect of changed or different estimates is not material to the financial presentation for those other areas.

Estimated useful lives of plant, property and equipment

The Company currently depreciates most of its network infrastructure based on an estimated useful life determined upon the expected particular conditions of operation and maintenance in each of the countries in which it operates. The estimates are based on AMX’s historical experience with similar assets, anticipated technological changes and other factors, taking into account the practices of other telecommunications companies. The Company reviews estimated useful lives each year to determine, for each particular class of assets, whether they should be changed. The Company may shorten/extend the estimated useful life of an asset class in response to technological changes, changes in the market or other developments. This results in increased/decreased depreciation expense. See Notes 2j) and 10.

Impairment of Long-Lived Assets

The Company has large amounts of long-lived assets, including property, plant and equipment, intangible assets, investments in affiliates and goodwill on its consolidated statements of financial position. The Company is required to test long-lived assets for impairment when circumstances indicate a potential impairment or, in some cases, at least on an annual basis. The impairment analysis for long-lived assets requires the Company to estimate the recoverable amount of the asset, which is the higher of its fair value (minus any disposal costs) and its value in use. To estimate the fair value of a long-lived asset, the Company typically takes into account recent market transactions or, if no such transactions can be identified, the Company uses a valuation model that requires making certain assumptions and estimates. Similarly, to estimate the value in use of long-lived assets, the Company typically makes various assumptions about the future prospects for the business to which the asset relates, considers market factors specific to that business and estimates future cash flows to be generated by that business. Based on this impairment analysis, including all assumptions and estimates related thereto, as well as guidance provided by IFRS relating to the impairment of long-lived assets different assumptions and estimates could materially impact the Company’s reported financial results. More conservative assumptions of the anticipated future benefits from these businesses could result in impairment charges, which would decrease net income and result in lower asset values on the consolidated statements of financial position. Conversely, less conservative assumptions could result in smaller or no impairment charges, higher net income and higher asset values. The key assumptions used to determine the recoverable amount for the Company’s CGUs, are further explained in Notes 2l), 10 and 11.

Deferred Income Taxes

The Company is required to estimate its income taxes in each of the jurisdictions in which it operates. This process involves the jurisdiction-by-jurisdiction estimation of actual current tax exposure and the assessment of temporary differences resulting from the differing treatment of certain items, such as accruals and amortization, for tax and financial reporting purposes, as well as net operating loss carry-forwards and other tax credits. These items result in deferred tax assets and liabilities as discussed in Note 2 s). The analysis is based on estimates of taxable income in the jurisdictions in which the Company operates and the period on which the deferred tax assets and liabilities will be recovered or settled. If actual results differ from these estimates, or the Company adjusts these estimates in future periods, its financial position and results of operations may be materially affected.

In assessing the future realization of deferred tax assets, the Company considers future taxable income, ongoing planning strategies and future results in its operations. In the event that the estimates of projected future taxable income are lowered, or changes in current tax regulations are enacted that would impose restrictions on the timing or extent of the ability to utilize the tax benefits of net operating loss carry-forwards in the future, an adjustment to the recorded amount of deferred tax assets would be made, with a related charge to income. See Note 13.

Accruals

Accruals are recorded when, at the end of the period, the Company has a present obligation as a result of past events, whose settlement requires an outflow of resources that is considered probable and can be measured reliably. This obligation may be legal or constructive, arising from, but not limited to, regulation, contracts, common practice or public commitments, which have created a valid expectation for third parties that the Company will assume certain responsibilities. The amount recorded is the best estimation performed by the Company’s management in respect of the disbursement that will be required to settle the obligations, considering all the information available at the date of the financial statements, including the opinion of external experts, such as legal advisors or consultants. Accruals are adjusted to account for changes in circumstances for ongoing matters and the establishment of additional accruals for new matters.

If the Company is unable to reliably measure the obligation, no accrual is recorded and information is then presented in the notes to its consolidated financial statements. Because of the inherent uncertainties in these estimations, actual expenditures may be different from the originally estimated amount recognized. See Note 15.

The Company is subject to various claims and contingencies related to tax, labor and legal proceedings as described in Note 16c).

Labor Obligations

The Company recognizes liabilities on its consolidated statements of financial position and expenses in its statements of comprehensive income to reflect its obligations related to its post-retirement seniority premiums, pension and retirement plans in the countries in which it operates and offer defined contribution and benefit pension plans. The amounts the Company recognizes are determined on an actuarial basis that involves estimations and accounts for post-retirement and termination benefits.

The Company uses estimates in four specific areas that have a significant effect on these amounts: (i) the rate of return the Company assumes its pension plans will earn on its investments, (ii) the salaries increase rate that the Company assumes it will observe in future years, (iii) the discount rates that the Company uses to calculate the present value of its future obligations and (iv) the expected inflation rate. The assumptions applied are further disclosed in Note 17. These estimates are determined based on actuarial studies performed by independent experts using the projected unit-credit method.

ac) Retrospective adjustment

The following amounts in the consolidated statements of comprehensive income for the years ended December 31, 2016 and 2017, have been retrospectively reclassified to conform to the presentation for the year ended December 31, 2018.

In the Consolidated Statements of Comprehensive Income:

	As reported 2016		Retrospective reclassification			2016 As adjustments
Operating revenues:
Mobile voice services	Ps.	242,302,380	Ps.	(242,302,380	)	Ps.	—
Fixed voice services		95,299,154		(95,299,154	)		—
Mobile data services		256,936,895		(256,936,895	)		—
Fixed data services		126,278,206		(126,278,206	)		—
Pay television		78,268,778		(78,268,778	)		—
Other related services		32,799,952		(32,799,952	)		—
Revenues services		—		831,885,365			831,885,365
	Ps.	831,885,365	Ps.	—		Ps.	831,885,365

	As reported 2017		Retrospective reclassification			2017 As adjustments
Operating revenues:
Mobile voice services	Ps.	221,751,600	Ps.	(221,751,600	)	Ps.	—
Fixed voice services		89,856,743		(89,856,743	)		—
Mobile data services		308,526,994		(308,526,994	)		—
Fixed data services		139,277,613		(139,277,613	)		—
Pay television		86,882,606		(86,882,606	)		—
Other related services		32,115,767		(32,115,767	)		—
Revenues services		—		878,411,323			878,411,323
	Ps.	878,411,323	Ps.	—		Ps.	878,411,323

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Cash and Cash Equivalents

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Cash and Cash Equivalents

3. Cash and Cash Equivalents

Cash and cash equivalents are comprised of short-term deposits with different financial institutions. Cash equivalents only include instruments with purchased maturity of less than three months. The amount includes the amount deposited, plus any interest earned.

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Equity investments at fair value through OCI and other short-term investments

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Equity investments at fair value through OCI and other short-term investments

4. Equity investments at fair value through OCI and other short-term investments

As of December 31, 2017 and 2018, equity investments at fair value through OCI and other short-term investments includes an equity investments in KPN for Ps. 46,682,657 and Ps. 39,028,083, respectively, and other short-term investments for Ps. 12,438,019 and Ps. 9,987,851, respectively.

The investment in KPN is carried at fair value with changes in fair value being recognized through other comprehensive (loss) items (equity) in the Company’s consolidated statements of financial position. As of December 31, 2017 and 2018, the Company has recognized in equity changes in fair value of the investment of Ps. 622,424 and Ps. (3,765,688), respectively, net of deferred taxes, through other comprehensive (loss) gain items in equity.

During the years ended December 31, 2016, 2017 and 2018, the Company received dividends from KPN for an amount of Ps. 5,740,092, Ps. 2,370,559 and Ps. 2,605,333, respectively; which are included within “Valuation of derivatives, interest cost from labor obligations, and other financial items, net” in the consolidated statements of comprehensive income. Another short-term investment item of Ps. 9,987,851, as of December 31, 2018 (Ps. 12,438,019 in 2017) represents a cash deposit used to guarantee a short-term obligation for one of the Company’s foreign subsidiaries and are presented at their carrying value, which approximates fair value.

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Accounts receivable from subscribers, distributors, recoverable taxes contractual assets and other, net

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Accounts receivable from subscribers, distributors, recoverable taxes contractual assets and other, net

5. Accounts receivable from subscribers, distributors, recoverable taxes contractual assets and other, net

a) An analysis of accounts receivable by component at December 31, 2017 and 2018 is as follows:

	At December 31,
	2017			2018
Subscribers and distributors	Ps.	178,722,706		Ps.	173,053,226
Telecommunications carriers for network interconnection and other services		8,671,416			5,543,263
Recoverable taxes (i)		40,477,188			46,706,298
Sundry debtors		14,736,340			12,685,281
Contractual assets (Note 2i, a)		—			34,718,749
Impairment of trade receivables		(39,044,925	)		(40,798,025	)
Total net	Ps.	203,562,725		Ps.	231,908,792
Non-current subscribers, distributors and contractual assets		9,786,581			15,681,872
Total current subscribers, distributors and contractual assets	Ps.	193,776,144		Ps.	216,226,920

(i) In accordance with the favorable resolution obtained from the authorities, in 2018 the subsidiary Claro Brasil recognized a benefit for the exclusion of the Tax on the Circulation of Goods and the Provision of Services (Imposto sobre a Circulação de Mercadorias e Prestação de Serviços, or “ICMS “) in the calculation bases of the Social Integration Program (Social Integration Program, or” PIS “) and the Contribution for the Financing of Social Security (Contribution to or Financing of Social Security, or” COFINS “) in the amount total of Ps. 12,295,869, that includes interest of Ps. 6,127,656. The asset was recognized based on the certainty of obtaining the economic benefit.

b) Changes in the allowance for expected credit losses is as follows:

	For the years ended December 31,
	2016			2017			2018
Balance at beginning of year	Ps.	(27,495,158	)	Ps.	(37,351,677	)	Ps.	(39,044,925	)
Increases recorded in expenses		(16,987,769	)		(20,766,362	)		(19,535,707	)
Adjustment on initial application of IFRS 9 (Note 2i, b)		—			—			(2,400,783	)
Write-offs		12,587,567			17,713,992			15,497,254
Translation effect		(5,456,317	)		1,359,122			4,686,136
Balance at end of year	Ps.	(37,351,677	)	Ps.	(39,044,925	)	Ps.	(40,798,025	)

c) The following table shows the aging of accounts receivable at December 31, 2017 and 2018, for subscribers and distributors:

Past due

Total

Unbilled services provided

a-30 days

31-60 days

61-90 days

Greater than 90 days

December 31, 2017

Ps. 178,722,706

Ps. 78,384,174

Ps. 46,758,825

Ps. 6,780,671

Ps. 4,375,188

Ps. 42,423,848

December 31, 2018

Ps. 173,053,226

Ps. 62,623,654

Ps. 46,816,302

Ps. 6,315,277

Ps. 4,168,952

Ps. 53,129,041

d) The following table shows the accounts receivable from subscribers and distributors included in the impairments of trade receivables, as of December 31, 2017 and 2018:

	Total		1-90 days		Greater than 90 days
December 31, 2017		Ps. 39,044,925		Ps. 3,807,945		Ps. 35,236,980
December 31, 2018		Ps. 40,798,025		Ps. 4,079,803		Ps. 36,718,222

e) An analysis of contract assets and liabilities at December 31, 2018 is as follows:

	2018
Contract Assets:
Balance at the beginning of the year	Ps.	29,640,953
Additions		32,029,279
Disposals		(25,243,487	)
Translation effect		(1,707,996	)
Balance at the end of the year	Ps.	34,718,749
Non-current contract assets	Ps.	5,437,263
Current portion contracts assets	Ps.	29,281,486

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Related Parties

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Related Parties

6. Related Parties

a) The following is an analysis of the balances with related parties as of December 31, 2017 and 2018. All of the companies were considered affiliates of América Móvil since the Company’s principal shareholders are either direct or indirect shareholders in the related parties.

	2017		2018
Accounts receivable:
Sears Roebuck de México, S.A. de C.V.	Ps.	211,491	Ps.	264,976
Sanborns Hermanos, S.A.		91,233		312,706
Patrimonial Inbursa, S.A.		246,874		214,180
Carso Infraestructura y Construcción, S.A. de C.V. and Subsidiaries		89,585		179,852
Grupo Condumex, S.A. de C.V. and Subsidiaries		47,269		35,007
Operadora de Sites Mexicanos, S.A. de C.V.		14,252		16,634
Other		167,526		240,250
Total	Ps.	868,230	Ps.	1,263,605
	2017		2018
Accounts payable:
Carso Infraestructura y Construcción, S.A. de C.V. and Subsidiaries	Ps.	947,761	Ps.	1,403,414
Grupo Condumex, S.A. de C.V. and Subsidiaries		812,427		784,678
Grupo Financiero Inbursa, S.A.B. de C.V.		38,847		235,745
Fianzas Guardiana Inbursa, S.A. de C.V.		276,633		227,014
PC Industrial, S.A. de C.V. and Subsidiaries		136,859		83,502
Enesa, S.A. de C.V. and Subsidiaries		50,609		22,630
Other		277,276		217,230
Total	Ps.	2,540,412	Ps.	2,974,213

For the years ended December 31, 2016, 2017 and 2018, the Company has not recorded any impairment of receivables in connection with amounts owed by related parties.

b) For the years ended December 31, 2016, 2017 and 2018, the Company conducted the following transactions with related parties:

	2016		2017		2018
Investments and expenses:
Construction services, purchases of materials, inventories and property, plant and equipment (i)	Ps.	9,917,280	Ps.	11,030,944	Ps.	7,211,960
Rent of towers		4,748,503		5,326,366		6,168,592
Insurance premiums, fees paid for administrative and operating services, brokerage services and others (ii)		4,118,469		4,135,578		4,134,380
Other services		1,899,818		2,802,667		1,864,017
	Ps.	20,684,070	Ps.	23,295,555	Ps.	19,378,949
Revenues:
Revenues services	Ps.	411,076	Ps.	416,047	Ps.	679,220
Sales of equipment		2,679,591		2,313,840		1,296,204
	Ps.	3,090,667	Ps.	2,729,887	Ps.	1,975,424

i) In 2018, this amount includes Ps.5,622,791 (Ps. 9,829,991 in 2017 and Ps. 9,547,530 in 2016) for network construction services and construction materials purchased from subsidiaries of Grupo Carso, S.A.B. de C.V. (Grupo Carso).

ii) In 2018, this amount includes Ps. 778,191 (Ps. 789,253 in 2017 and Ps. 812,247 in 2016) for network maintenance services performed by Grupo Carso subsidiaries; Ps. 13,784 in 2018 (Ps. 15,695 in 2017, and Ps. 705,074 in 2016) for software services provided by an associate; Ps. 2,541,703 in 2018 (Ps. 3,330,038 in 2017 and Ps. 2,406,058 in 2016) for insurance premiums with Seguros Inbursa S.A. and Fianzas Guardiana Inbursa, S.A., which, in turn, places most of such insurance with reinsurers.

c) The aggregate compensation paid to the Company’s, directors (including compensation paid to members of the Audit and Corporate Practices Committee), and senior management in 2018 was approximately Ps. 5,300 and Ps. 70,100, respectively. None of the Company’s directors is a party to any contract with the Company or any of its subsidiaries that provides for benefits upon termination of employment. The Company does not provide pension, retirement or similar benefits to its directors in their capacity as directors. The Company’s executive officers are eligible for retirement and severance benefits required by Mexican law on the same terms as all other employees.

d) Österreichische Bundes- und Industriebeteiligungen GmbH (ÖBIB) is considered a related party due to it is a significant non-controlling shareholder in Telekom Austria. Through Telekom Austria, América Móvil is related to the Republic of Austria and its subsidiaries, which are mainly ÖBB Group, ASFINAG Group and Post Group as well as Rundfunk und Telekom Reguliegungs-GmbH, all of which these are related parties. In 2016, 2017 and 2018, none of the individual transactions associated with government agencies or government-owned entities of Austria were considered significant to América Móvil.

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Derivative Financial Instruments

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Derivative Financial Instruments

7 Derivative Financial Instruments

To mitigate the risks of future increases in interest rates and foreign exchange rates for the servicing of its debt, the Company has entered into derivative contracts in over-the-counter transactions carried out with financial institutions. In 2018 the weighted-average interest rate of the total debt including the impact of interest rate derivatives held by the Company is 4.1% (4.0% and 3.7% in 2017 and 2016, respectively).

An analysis of the derivative financial instruments contracted by the Company at December 31, 2017 and 2018 is as follows:

	At December 31,
	2017				2018
Instrument	Notional amount in millions		Fair Value		Notional amount in millions		Fair Value
Assets:
Swaps US Dollar-Mexican peso	US$	2,800		Ps.4,766,102	US$	3,490		Ps. 2,058,831
Swaps Euro-Mexican peso	€	—		—		—		—
Swaps Yen-US Dollar	¥	13,000		521,270	¥	13,000		581,948
Forwards US Dollar-Mexican peso	US$	1,744		1,600,666		—		—
Forwards US Dollar-Brazilian real	US$	100		44,280	US$	150		126,287
Swaps Swiss Franc-US Dollar	CHF	475		178,710		—		—
Swaps Euro-Brazilian real	€	450		359,671	€	300		1,080,552
Interest rate swap		Ps.200		916		—		—
Forwards Brazilian Real-US Dollar		—		—	BRL $	2,823		1,107,630
Forwards Euro-Brazilian real	€	400		330,427	€	150		123,005
Forwards US Dollar-Swiss franc	CHF	75		121,981		—		—
Forwards Euro-US Dollar	€	204		113,361	€	710		209,295
Total Assets				Ps. 8,037,384				Ps. 5,287,548

	At December 31,
	2017				2018
Instrument	Notional amount in millions		Fair Value		Notional amount in millions		Fair Value
Liabilities:
Swaps US Dollar-Euro	US$	2,092	Ps.	(8,340,970)	US$	2,025	Ps.	(5,114,863)
Swaps Pound sterling-Euro	£	740		(3,376,091)	£	740		(4,027,312)
Swap Pound sterling-US Dollar	£	2,010		(1,676,636)	£	2,010		(5,836,607)
Forwards US Dollar-Mexican Peso		—		—	US$	977		(772,704)
Forwards Euro-US Dollar		—		—	€	950		(333,586)
Call spread option	€	750		(48,422)		—		—
Put option	€	374		(482,645)	€	374		(988,669)
Call spread option	€	3,000		(434,696)	€	3,000		(33,838)
Total Liabilities			Ps.	(14,359,460)			Ps.	(17,107,579)
Non-current liability			Ps.	(3,756,921)			Ps.	(3,567,863)
Total current liability			Ps.	(10,602,539)			Ps.	(13,539,716)

The changes in the fair value of these derivative financial instruments for the years ended December 31, 2016, 2017 and 2018 amounted to a gain (loss) of Ps. (9,622,233), Ps. 8,192,567 and Ps. (4,686,407). Such amounts are included in the consolidated statements of comprehensive income as part of the caption “Valuation of derivatives interest cost from labor obligations and other financial items, net”.

The maturities of the notional amount of the derivatives are as follows:

Instrument	Notional amount in millions		2019		2020		2021		2022		2023 Thereafter
Assets
Swaps US Dollar-Mexican peso	US$			—		—		—		1,600		1,890
Swaps Yen-US Dollar	¥			—		—		—		—		13,000
Swaps Euro-Brazilian real	€			300		—		—		—		—
Forwards Brazilian Real-US Dollar		BRL		1,680		—		1,143		—		—
Forwards Euro-Brazilian Real	€			150		—		—		—		—
Forwards US Dollar-Brazilian Real	US$			150		—		—		—		—
Forwards Euro-US Dollar	€			710		—		—		—		—
Liabilities
Swaps US Dollar-Euro	US$			25		—		—		—		2,000
Swaps Pound sterling-Euro	£			—		—		—		—		740
Swap Pound sterling-US Dollar	£			—		550		—		—		1,460
Forwards US Dollar-Mexican Peso	US$			977		—		—		—		—
Forwards Euro-US Dollar	€			950		—		—		—		—
Put option	€			—		—		—		—		374
Call spread option	€			—		3,000		—		—		—

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Inventories, net

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Inventories, net

8. Inventories, net

An analysis of inventories at December 31, 2017 and 2018 is as follows:

	2017			2018
Mobile phones, accessories, computers, TVs, cards and other materials		Ps. 42,262,511			Ps. 43,723,492
Less: Reserve for obsolete and slow-moving inventories		(3,452,946	)		(3,418,130	)
Total		Ps. 38,809,565			Ps. 40,305,362

For the years ended December 31, 2016, 2017 and 2018, the cost of inventories recognized in cost of sales was Ps. 172,495,376, Ps. 170,154,336 and Ps. 180,013,986 respectively.

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Other assets, net

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Other assets, net

9. Other assets, net

An analysis of other assets at December 31, 2017 and 2018 is as follows:

	2017		2018
Current portion:
Advances to suppliers (different from PP&E and inventories)		Ps. 9,536,654		Ps. 12,931,247
Prepaid insurance		683,091		949,590
Costs of mobile equipment and computers associated with deferred revenues		6,182,010		599,628
Other		950,991		815,728
		Ps. 17,352,746		Ps.15,296,193
Non-current portion:
Recoverable taxes		Ps. 12,249,372		Ps. 11,514,455
Prepayments for the use of fiber optics		4,361,668		3,985,216
Prepaid expenses and judicial deposits (1)		25,926,436		26,961,930
Total		Ps. 42,537,476		Ps. 42,461,601

For the years ended December 31, 2016, 2017 and 2018, amortization expense for other assets was Ps. 1,340,609, Ps. 620,680 and Ps. 798,243, respectively.

(1) Judicial deposits represent cash and cash equivalents pledged in order to fulfill the collateral requirements for tax contingencies mainly in Brazil. At December 31, 2017 and 2018, the amount for these deposits is Ps. 20,288,382 and Ps. 18,172,342, respectively. Based on its evaluation of the underlying contingencies, the Company believes that such amounts are recoverable.

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Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Property, Plant and Equipment, Net

10. Property, Plant and Equipment, net

a) An analysis of property, plant and equipment, net at December 31, 2016, 2017 and 2018 is as follows:

	At December 31, 2015			Additions		Retirements			Business combinations		Translation effect of Foreign Subsidiaries		Depreciation for the year			At December 31, 2016
Cost
Network in operation and equipment	Ps.	641,384,702		Ps.	101,794,197	Ps.	(8,963,076	)	Ps.	1,873,445	Ps.	235,186,745	Ps.	—		Ps.	971,276,013
Land and buildings		54,794,386			2,900,511		(2,845,298	)		3,839		7,281,973		—			62,135,411
Other assets		106,468,602			24,368,918		(10,717,096	)		69,937		24,736,655		—			144,927,016
Construction in process and advances plant suppliers (1)		38,850,776			70,517,319		(70,911,593	)		11,255		11,252,127		—			49,719,884
Spare parts for operation of the network		20,342,389			34,010,751		(27,641,919	)		5,520		1,566,307		—			28,283,048
Total		861,840,855			233,591,696		(121,078,982	)		1,963,996		280,023,807		—			1,256,341,372
Accumulated depreciation
Network in operation and equipment		236,731,728			—		(1,968,376	)		—		153,147,349		107,976,385			495,887,086
Buildings		4,567,588			—		(975,284	)		—		3,709,952		3,179,066			10,481,322
Other assets		47,057,084			—		(25,099,710	)		—		10,396,438		16,105,885			48,459,697
Spare parts for operation of the network		(44,423	)		—		(54,280	)		—		20,896		401,008			323,201
Total	Ps.	288,311,977		Ps.	—	Ps.	(28,097,650	)	Ps.	—	Ps.	167,274,635	Ps.	127,662,344		Ps.	555,151,306
Net Cost	Ps.	573,528,878		Ps.	233,591,696	Ps.	(92,981,332	)	Ps.	1,963,996	Ps.	112,749,172	Ps.	(127,662,344	)	Ps.	701,190,066

	At December 31, 2016		Additions		Retirements			Business combinations		Effect of translation of foreign subsidiaries			Depreciation for the year			At December 31, 2017
Cost
Network in operation and equipment		Ps. 971,276,013		Ps.  78,272,882		Ps. (21,657,715	)	Ps.	599,306		Ps.(38,824,540	)		Ps.            —			Ps.  989,665,946
Land and buildings		62,135,411		2,858,996		(415,219	)		27,686		(2,022,685	)		—			62,584,189
Other assets		144,927,016		19,287,525		(8,112,571	)		80,734		(5,866,897	)		—			150,315,807
Construction in process and advances plant suppliers (1)		49,719,884		66,383,381		(41,279,573	)		34,705		(737,023	)		—			74,121,374
Spare parts for operation of the network		28,283,048		27,013,148		(27,979,816	)		3,576		(728,358	)		—			26,591,598
Total		1,256,341,372		193,815,932		(99,444,894	)		746,007		(48,179,503	)		—			1,303,278,914
Accumulated depreciation
Network in operation and equipment		495,887,086		—		(21,214,724	)		—		(32,860,339	)		110,533,486			552,345,509
Buildings		10,481,322		—		(1,568,542	)		—		(940,054	)		2,682,559			10,655,285
Other assets		48,459,697		—		(4,572,509	)		—		(2,251,958	)		21,724,299			63,359,529
Spare parts for operation of the network		323,201		—		(9,205	)		—		(4,339	)		265,736			575,393
Total		Ps. 555,151,306		Ps.              —		Ps. (27,364,980	)	Ps.	—		Ps.(36,056,690	)		Ps. 135,206,080			Ps. 626,935,716
Net Cost		Ps. 701,190,066		Ps. 193,815,932		Ps. (72,079,914	)	Ps.	746,007		Ps. (12,122,813	)		Ps. (135,206,080	)		Ps. 676,343,198

	At December 31, 2017		Additions		Retirements			Business combinations		Effect of translation of foreign subsidiaries and hyperinflation adjustment			Depreciation for the year			At December 31, 2018
Cost
Network in operation and equipment		Ps. 989,665,946		Ps.   68,900,443		Ps.  (1,610,246	)		Ps. 128,246		Ps. (87,888,453	)		—			Ps. 969,195,936
Land and buildings		62,584,189		4,429,433		(3,987,671	)		8,874		(5,904,499	)		—			57,130,326
Other assets		150,315,807		25,268,252		(13,377,798	)		2,578		(12,399,702	)		—			149,809,137
Construction in process and advances plant suppliers (1)		74,121,374		92,285,397		(76,978,798	)		1,379		(8,336,823	)		—			81,092,529
Spare parts for operation of the network		26,591,598		49,380,349		(44,626,488	)		1,939		(2,902,869	)		—			28,444,529
Total		1,303,278,914		240,263,874		(140,581,001	)		143,016		(117,432,346	)		—			1,285,672,457
Accumulated depreciation
Network in operation and equipment		552,345,509		—		(28,712,096	)		—		(67,907,227	)		104,279,361			560,005,547
Buildings		10,655,285		—		(2,311,442	)		—		(2,157,996	)		2,625,102			8,810,949
Other assets		63,359,529		—		(2,418,837	)		—		(6,579,983	)		22,172,785			76,533,494
Spare parts for operation of the network		575,393		—		(160,696	)		—		(131,429	)		38,479			321,747
Total		Ps. 626,935,716		Ps.                 —		Ps.  (33,603,071	)		Ps.        —		Ps. (76,776,635	)		Ps.   129,115,727			Ps. 645,671,737
Net Cost		Ps. 676,343,198		Ps.240,263,874		Ps. (106,977,930	)		Ps. 143,016		Ps. (40,655,711	)		Ps. (129,115,727	)		Ps. 640,000,720

⁽¹⁾ Construction in progress includes fixed and mobile network facilities as well as satellite developments and fiber optic which is in the process of being installed.

The completion period of construction in progress is variable and depends upon the type of plant and equipment under construction.

b) At December 31, 2017 and 2018, property, plant and equipment include the following assets under capital leases:

	2017			2018
Assets under capital leases		Ps.  8,116,532			Ps.7,770,681
Accumulated depreciation		(3,475,014	)		(3,530,241	)
		Ps.  4,641,518			Ps.  4,240,440

c) At December 31, 2018 and 2017, Claro Brasil has land and buildings and other equipment that are pledged in guarantee of legal proceedings in the amount of Ps.3,166,882 and Ps. 3,521,082, respectively.

d) Relevant information related to the computation of the capitalized borrowing costs is as follows:

	Year ended December 31,
	2016		2017		2018
Amount invested in the acquisition of qualifying assets		Ps. 52,974,400		Ps. 49,642,370		Ps. 45,456,630
Capitalized interest		2,861,307		2,875,034		2,020,288
Capitalization rate		5.4%		5.8%		4.4%

Capitalized interest is being amortized over a period of estimated useful life of the related assets.

e) On October 20, 2017, our subsidiary Star One signed a contract with SSL — Space Systems Loral for construction of the Star One D2 satellite, which will be equipped with transponders 52 in the C and Ku bands, 20 Gbps of capacity in Band Ka and a certain capacity in X-band. The cost of this Project is estimated to be approximately Ps. 6,391,104 (US$ 323,000) and the launch will take place at the end of 2019. At December 31, 2018 and 2017 the amount recorded in Construction in progress amounts to Ps. 2,896,399 (R$551,528) and Ps. 916,240 (R$153,179), respectively.

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Intangible assets, net and goodwill

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Intangible assets, net and goodwill

11. Intangible assets, net and goodwill

a) An analysis of intangible assets at December 31, 2016, 2017 and 2018 is as follows:

	For the year ended December 31, 2016
	Balance at beginning of year			Acquisitions			Acquisitions in business combinations			Disposals and other			Amortization of the year			Effect of translation of foreign subsidiaries			Balance at end of year
Licenses and rights of use	Ps.	175,295,775		Ps.	9,129,949		Ps.	360,144		Ps.	1,269,478		Ps.	—		Ps.	56,684,016		Ps.	242,739,362
Accumulated amortization		(84,846,524	)		—			—			—			(10,255,271	)		(31,606,303	)		(126,708,098	)
Net		90,449,251			9,129,949			360,144			1,269,478			(10,255,271	)		25,077,713			116,031,264
Trademarks		22,824,013			—			101,655			(13,820	)		—			4,877,302			27,789,150
Accumulated amortization		(11,523,707	)		—			—			—			(330,576	)		(3,367,974	)		(15,222,257	)
Net		11,300,306			—			101,655			(13,820	)		(330,576	)		1,509,328			12,566,893
Customer relationships		18,394,407			—			1,904,503			—			—			5,946,598			26,245,508
Accumulated amortization		(3,962,875	)		—			—			—			(3,231,518	)		(5,240,681	)		(12,435,074	)
Net		14,431,532			—			1,904,503			—			(3,231,518	)		705,917			13,810,434
Software licenses		8,782,768			3,854,066			26,871			(829,680	)		—			1,040,771			12,874,796
Accumulated amortization		(2,424,598	)		(41,185	)		(8,367	)		829,680			(3,469,461	)		(9,809	)		(5,123,740	)
Net		6,358,170			3,812,881			18,504			—			(3,469,461	)		1,030,962			7,751,056
Content rights		2,634,527			2,242,556			—			(217,057	)		—			216,272			4,876,298
Accumulated amortization		(428,746	)		—			—			(1,612	)		(2,236,141	)		—			(2,666,499	)
Net		2,205,781			2,242,556			—			(218,669	)		(2,236,141	)		216,272			2,209,799
Total of intangibles, net	Ps.	124,745,040		Ps.	15,185,386		Ps.	2,384,806		Ps.	1,036,989		Ps.	(19,522,967	)	Ps.	28,540,192		Ps.	152,369,446
Goodwill (Note 12)	Ps.	137,113,716		Ps.	—		Ps.	3,953,023		Ps.	(356,832	)	Ps.	—		Ps.	11,922,728		Ps.	152,632,635

	For the year ended December 31, 2017
	Balance at beginning of year			Acquisitions		Acquisitions in business combinations		Disposals and other			Amortization of the year			Effect of translation of foreign subsidiaries			Balance at end of year
Licenses and rights of use	Ps.	242,739,362		Ps.	12,347,051	Ps.	53,923	Ps.	(1,037,458	)	Ps.	—		Ps.	(6,689,054	)	Ps.	247,413,824
Accumulated amortization		(126,708,098	)		—		—		244,564			(11,879,489	)		4,233,585			(134,109,438	)
Net		116,031,264			12,347,051		53,923		(792,894	)		(11,879,489	)		(2,455,469	)		113,304,386
Trademarks		27,789,150			127,823		82,868		(29,804	)		—			809,175			28,779,212
Accumulated amortization		(15,222,257	)		—		—		34,464			(3,179,461	)		(474,151	)		(18,841,405	)
Net		12,566,893			127,823		82,868		4,660			(3,179,461	)		335,024			9,937,807
Customer relationships		26,245,508			—		512,667		(882,338	)		—			1,109,877			26,985,714
Accumulated amortization		(12,435,074	)		—		—		882,338			(3,769,777	)		(806,982	)		(16,129,495	)
Net		13,810,434			—		512,667		—			(3,769,777	)		302,895			10,856,219
Software licenses		12,874,796			3,351,200		—		(1,698,118	)		—			527,720			15,055,598
Accumulated amortization		(5,123,740	)		—		—		1,212,669			(3,699,363	)		(204,727	)		(7,815,161	)
Net		7,751,056			3,351,200		—		(485,449	)		(3,699,363	)		322,993			7,240,437
Content rights		4,876,298			2,099,084		—		(63,137	)		—			(194,803	)		6,717,442
Accumulated amortization		(2,666,499	)		—		—		(195,658	)		(1,820,092	)		165,584			(4,516,665	)
Net		2,209,799			2,099,084		—		(258,795	)		(1,820,092	)		(29,219	)		2,200,777
Total of intangibles, net	Ps.	152,369,446		Ps.	17,925,158	Ps.	649,458	Ps.	(1,532,478	)	Ps.	(24,348,182	)	Ps.	(1,523,776	)	Ps.	143,539,626
Goodwill (Note 12)	Ps.	152,632,635		Ps.	—	Ps.	951,348	Ps.	(134,525	)	Ps.	—		Ps.	(1,986,226	)	Ps.	151,463,232

	For the year ended December 31, 2018
	Balance at beginning of year			Acquisitions		Acquisitions in business combinations		Disposals and other			Amortization of the year			Effect of translation of foreign subsidiaries and Hyperinflation adjustment			Balance at end of year
Licenses and rights of use	Ps.	247,413,824		Ps.	4,227,244		—	Ps.	1,508,274			—		Ps.	(19,670,368	)	Ps.	233,478,974
Accumulated amortization		(134,109,438	)		—		—		(1,005,877	)		(11,347,089	)		16,281,825			(130,180,579	)
Net		113,304,386			4,227,244				502,397			(11,347,089	)		(3,388,543	)		103,298,395
Trademarks		28,779,212			159,958		6,631		—						(738,635	)		28,207,166
Accumulated amortization		(18,841,405	)		—		—		—			(4,973,602	)		275,046			(23,539,961	)
Net		9,937,807			159,958		6,631		—			(4,973,602	)		(463,589	)		4,667,205
Customer relationships		26,985,714			74,637		15,556		—						(1,532,839	)		25,543,068
Accumulated amortization		(16,129,495	)						—			(3,754,312	)		1,122,270			(18,761,537	)
Net		10,856,219			74,637		15,556		—			(3,754,312	)		(410,569	)		6,781,531
Software licenses		15,055,598			2,004,550		3,006		(905,610	)		—			(1,848,286	)		14,309,258
Accumulated amortization		(7,815,161	)		—				2,677,848			(3,491,629	)		924,139			(7,704,803	)
Net		7,240,437			2,004,550		3,006		1,772,238			(3,491,629	)		(924,147	)		6,604,455
Content rights		6,717,442			850,779		—		—			—			(18,512	)		7,549,709
Accumulated amortization		(4,516,665	)		—		—		—			(2,231,978	)		(14,949	)		(6,763,592	)
Net		2,200,777			850,779		—		—			(2,231,978	)		(33,461	)		786,117
Total of intangibles, net	Ps.	143,539,626		Ps.	7,317,168	Ps.	25,193	Ps.	2,274,635		Ps.	(25,798,610	)	Ps.	(5,220,309	)	Ps.	122,137,703
Goodwill	Ps.	151,463,232		Ps.	1,455	Ps.	333,284	Ps.	(1,094,861	)		—		Ps.	(5,136,613	)	Ps.	145,566,497

b) The aggregate carrying amount of goodwill is allocated as follows:

	2017		2018
Europe (7 countries)		Ps. 53,143,542		Ps. 53,066,729
Brazil (Fixed, wireless and TV)		24,708,740		21,388,124
Puerto Rico		17,463,394		17,463,394
Dominican Republic		14,186,723		14,186,723
Colombia		13,981,033		12,770,381
México		9,852,912		9,856,601
Peru		3,958,110		3,086,981
Chile		2,834,134		2,576,214
El Salvador		2,510,577		2,510,577
Ecuador		2,155,385		2,155,385
Other countries		6,668,682		6,505,388
		Ps. 151,463,232		Ps. 145,566,497

c) The following is a description of the major changes in the “Licenses and rights of use” caption during the years ended December 31, 2016, 2017 and 2018:

2016 Acquisitions

i) In February 2016, the Company´s subsidiary in Paraguay was granted with the use of 30 MHz of spectrum in the 1700/2100 Mhz frequency. The total cost was Ps. 830,719 (US$ 46,000).

ii) In February 2016, the Company through its subsidiary Radiomóvil Dipsa, S.A. de C.V. (Telcel), acquired through an auction a total of 20MHz in the national wide AWS-1 band and 40 MHz in the AWS-3 band. The concession expires in October 2030. The Company paid an amount of Ps. 2,098,060.

iii) In May 2016, Mtel, located in Bulgaria, acquired 2 x 5 MHz in the 1,800-MHz spectrum for Ps. 135,441 (EUR 6,212). During 2016, Telekom Austria paid Ps. 410,713 (EUR 18,837) for the renewals referring to an obligation obtained from concessions granted in previous years.

iv) On May 26, 2016, the Company’s subsidiary in Peru acquired spectrum in a public auction of the 700 MHz band. The frequency band expires in 2036. The cost of the spectrum was Ps. 5,627,316 (PEN$. 1,002,523).

v) In July 2016, Ecuador Telecom acquired a license to operate TV in Ecuador for a period that ends in 2031. The amount paid was Ps. 27,700 (US$ 1,500).

2017 Acquisitions

i) In 2017, Claro Brasil increased its licenses value by Ps. 3,592,034 due to the cleaning process of the 700 MHz national frequency acquired in September 2014.

ii) On February 24, 2017 Radiomóvil Dipsa renewed its 8.4 MHz national license by paying Ps. 917,431, and on July 14, 2017, it acquired 43 concession titles for frequencies of 2.5 GHz in the amount of Ps. 5,305,498.

iii) Additionally, in 2017, the Company acquired other licenses in Chile, Europe, Uruguay and others countries in the amount of Ps. 2,532,088.

2018 Acquisitions

i. In December, Dominican Republic acquired radio spectrum totaling Ps 709,829 (RD$ 1,831,427) with a useful life of 11 years.

ii. Additionally, in 2018, the Company acquired other licenses in Paraguay, Puerto Rico, Europe, Argentina, Chile and others countries in the amount of Ps. 3,517,415.

Amortization of intangibles for the years ended December 31, 2016, 2017 and 2018 amounted to Ps. 19,522,968, Ps. 24,348,182and Ps. 25,798,610 respectively.

Some of the jurisdictions in which the Company operates can revoke their concessions under certain circumstances such as imminent danger to national security, national economy and natural disasters.

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Business combinations, acquisitions, sale and non-controlling interest

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Business combinations, acquisitions, sale and non-controlling interest

12. Business combinations, acquisitions, sale and non-controlling interest

a) The following is a description of the major acquisitions of investments in associates and subsidiaries during the years ended December 31, 2016 and 2017:

Acquisitions and sale 2016

a) In January 2016, in order to expand and strengthen its operations in Brazil, the Company through its Brazilian subsidiary, acquired a controlling interest of 99.99% in Brazil Telecomunicações S.A. (“BRTel”), a company operating in the market for Pay TV, Internet and broadband services and serving various municipalities of Brazil under the BLUE brand. The amount paid for the business acquisition was Ps. 1,088,668, net of acquired cash. The goodwill recognized amounted to Ps. 1,046,253.

b) In May 2016, the Company acquired an additional non-controlling interest of 1.8% in Tracfone Wireless Inc. thereby obtaining 100% of its capital stock. The amount paid was Ps. 2,300,553 (US$ 124,673). This transaction was recorded as an equity transaction, and therefore, no gain or loss was recognized.

c) In May 2016, the Company through his subsidiary, América Móvil Perú, S.A.C. acquired 100% of the capital stock of Olo del Perú S.A.C. (“Olo”), and TVS Wireless S.A.C. (“TVS”). Olo and TVS provide telecommunications services throughout Peru and hold radio spectrum in the 2.5 GHz band. The transaction was conditioned to the obtention of the approval of the Peruvian regulator, such approval was finally obtained in December 2016. The amount of the transaction was Ps. 1,854,379 (US$. 102,343) net of acquired cash. In May 2016 the Company paid Ps. 152,214 (US$ 7,554) and in January 2017, after the approval, Ps. 2,079,095 (US$ 94,789). The goodwill recognized amounted to Ps. 1,454,333 in December 2016, Ps. 188,452 in December 2017 and Ps. 329,366 in December 2018.

d) Based on a 2014 shareholder agreement, the Company agreed to ensure a minimal free float of Telekom Austria shares in the market. Consequently, in July 2016, the Company sold shares corresponding to 7.8% of the outstanding common stock of Telekom Austria AG. This sale reduced the overall shareholding of América Movil in Telekom Austria AG from 59.70% to 51.89%. Additionally, in August 2016, the Company sold 0.89% of the outstanding common stock of Telekom Austria AG. Following the successful completion of this transaction, AMX’s stake was reduced to 51.0%. The amount of cash received for these transactions was Ps. 6,323,336. As América Móvil still retains control over Telekom Austria AG, these transactions were recorded as equity transactions.

e) In September 2016, the Company, through his subsidiary Tracfone, acquired certain assets of T-Mobile, that represented a business, which included the brands known as Walmart Mobile and Go Smart. These assets were acquired in order to expand the Company’s distribution channels, add an incremental revenue stream, and assist in the growth of subscribers. There was no cash exchanged in the acquisition. The goodwill recognized amounted to Ps. 1,251,464.

f) In November 2016, Telekom Austria Group acquired 100% of the Belarusian fixed-line operator Atlant Telecom (Atlant) and its subsidiary TeleSet. After the acquisition, Atlant was renamed velcom ACS. Both companies are the leading privately owned fixed-line operators in Belarus offering fixed-line broadband, IPTV and cable TV as well as a video and audio library. The acquisition of Atlant and TeleSet is a further step in Telekom Austria Group’s convergence strategy. The final allocation of consideration transferred will be determined once all necessary information regarding identifiable assets is available. The amount paid for the business acquisition was Ps. 582,931, net of acquired cash. The goodwill recognized amounted to Ps. 200,973.

Acquisitions 2017

a) In February 2017, Telekom Austria Group acquired 97.68% of Metronet telekomunikacije through its Croatian subsidiary Vipnet. Metronet is one of the leading alternative fixed business solutions providers in Croatia. The fair values of the assets acquired and liabilities assumed at the acquisition date are reported in the Europe segment. The amount paid for the business acquisition was Ps. 1,550,534, net of acquired cash. The goodwill recognized amounted to Ps. 502,574.

b) During 2017, the Company acquired through its subsidiaries, other entities for which if paid Ps. 3,249,164, net of acquired cash. The identified goodwill has been allocated to the Europe segment. The goodwill recognized amounted to Ps. 260,355.

c) The Company acquired an additional non-controlling interest in its Mexican entities for an amount of Ps. 23,881.

b) Consolidated subsidiaries with non-controlling interests

The Company has control over Telekom Austria, which has a material non-controlling interest. Set out below is summarized information as of December 31, 2017 and 2018 of TKA’s consolidated financial statements. The amounts disclosed for this subsidiary are before inter-company eliminations and using the same accounting policies of América Móvil.

Selected financial data from the statements of financial position

	December 31,
	2017		2018
Assets:
Current assets	Ps.	29,128,486	Ps.	29,854,542
Non-current assets		150,225,260		131,407,408
Total assets	Ps.	179,353,746	Ps.	161,261,950
Liabilities and equity:
Current liabilities	Ps.	30,192,384	Ps.	36,822,034
Non-current liabilities		89,048,150		80,023,800
Total liabilities		119,240,534		116,845,834
Equity attributable to equity holders of the parent		25,808,318		22,621,625
Non-controlling interest (1)		34,304,894		21,794,491
Total equity	Ps.	60,113,212	Ps.	44,416,116
Total liabilities and equity	Ps.	179,353,746	Ps.	161,261,950

(1) In 2017 this amount includes Ps. 14,942,886 for the subordinated perpetual fixed rate bond (see Note 19).

Summarized statements of comprehensive income

	For the year ended December 31,
	2016		2017		2018
Operating revenues	Ps.	85,185,177	Ps.	93,644,173	Ps.	100,716,444
Operating costs and expenses		81,590,233		86,920,692		95,984,880
Operating income	Ps.	3,594,944	Ps.	6,723,481	Ps.	4,731,564
Net income	Ps.	7,065,770	Ps.	5,656,132	Ps.	3,809,694
Total comprehensive income	Ps.	8,450,837	Ps.	7,737,797	Ps.	5,047,838
Net income attributable to:
Equity holders of the parent	Ps.	3,241,556	Ps.	2,884,627	Ps.	1,942,944
Non-controlling interest		3,824,214		2,771,505		1,866,750
	Ps.	7,065,770	Ps.	5,656,132	Ps.	3,809,694
Comprehensive income attributable to:
Equity holders of the parent	Ps.	4,311,801	Ps.	3,978,263	Ps.	2,574,397
Non-controlling interest		4,139,036		3,759,534		2,473,441
	Ps.	8,450,837	Ps.	7,737,797	Ps.	5,047,838

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Income Taxes

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Income Taxes

13. Income Taxes

As explained previously in these consolidated financial statements, the Company is a Mexican corporation which has numerous consolidated subsidiaries operating in different countries. Presented below is a discussion of income tax matters that relates to the Company’s consolidated operations, its Mexican operations and significant foreign operations.

i) Consolidated income tax matters

The composition of income tax expense for the years ended December 31, 2016, 2017 and 2018 is as follows:

	2016			2017			2018
In Mexico:
Current year income tax	Ps.	14,316,005		Ps.	16,568,274		Ps.	28,572,414
Deferred income tax		(12,086,232	)		2,582,287			(2,688,727	)
Foreign:
Current year income tax		15,367,903			13,524,729			19,898,728
Deferred income tax		(6,198,820	)		(7,733,779	)		694,664
	Ps.	11,398,856		Ps.	24,941,511		Ps.	46,477,079

Deferred tax related to items recognized in OCI during the year:

	For the years ended December 31,
	2016			2017			2018
Remeasurement of defined benefit plans	Ps.	(7,734,732	)	Ps.	3,032,403		Ps.	408,735
Effect of financial instruments acquired for hedging purposes		(21,046	)		(5,337	)
Equity investments at fair value		2,858,452			(266,753	)		1,613,667
Other		136,879			—			(8,922	)
Deferred tax benefit (expense) recognized in OCI	Ps.	(4,760,447	)	Ps.	2,760,313		Ps.	2,013,480

A reconciliation of the statutory income tax rate in Mexico to the consolidated effective income tax rate recognized by the Company is as follows:

	Year ended December 31,
	2016			2017			2018
Statutory income tax rate in Mexico		30.0%			30.0%			30.0%
Impact of non-deductible and non-taxable items:
Tax inflation effects		15.9%			17.8%			7.3%
Derivatives		8.0%			1.0%			0.4%
Employee benefits		4.4%			2.2%			1.3%
Other		9.8%			2.6%			6.3%
Effective tax rate on Mexican operations		68.1%			53.6%			45.3%
Use of unrecognized tax credits in Brazil		(0.6%	)		(0.4%	)		—
Equity interest in net loss of associated companies		(0.2%	)		—			—
Dividends received from associates		(7.9%	)		(1.2%	)		(0.8%	)
Foreign subsidiaries and other non-deductible items, net		(10.8%	)		(8.3%	)		1.5%
Effective tax rate		48.6%			43.7%			46.0%

An analysis of temporary differences giving rise to the net deferred tax liability is as follows:

	Consolidated statements of financial position						Consolidated statements of comprehensive income
	2017			2018			2016			2017			2018
Provisions		Ps.26,268,666			Ps.20,781,421			Ps.1,622,132			Ps.1,579,604			Ps.1,841,705
Deferred revenues		7,461,802			6,866,120			(12,128	)		(965,010	)		3,632,051
Tax losses carry forward		38,332,408			27,881,491			12,706,245			(323,506	)		(5,833,660	)
Property, plant and equipment (1)		(9,929,129	)		(11,756,590	)		2,445,783			1,974,753			453,493
Inventories		2,003,049			2,106,976			(229,571	)		519,046			81,270
Licenses and rights of use (1)		(2,455,877	)		(3,896,788	)		54,182			348,201			961,402
Employee benefits		33,253,071			33,673,874			3,616,952			1,225,310			1,128,209
Other		9,639,995			10,956,823			(1,918,543	)		793,094			(270,407	)
Net deferred tax assets		Ps.104,573,985			Ps.86,613,327
Deferred tax expense in net profit for the year								Ps.18,285,052			Ps.5,151,492			Ps.1,994,063

(1) As of December 31, 2018, the balance included the effects of hyperinflation.

Reconciliation of deferred tax assets and liabilities, net:

	2016			2017			2018
Opening balance as of January 1,	Ps.	69,817,147		Ps.	98,589,818		Ps.	104,573,985
Deferred tax benefit		18,285,052			5,151,492			1,994,063
Translation effect		15,273,228			(1,687,276	)		(8,854,010	)
Deferred tax benefit (expense) recognized in OCI		(4,760,447	)		2,760,313			2,013,480
Deferred taxes acquired in business combinations		(25,162	)		(240,362	)		(25,827	)
Hyperinflationary effect in Argentina		—			—			(4,907,151	)
Effect of adoption of IFRS 9 (Note 2ai)		—			—			544,628
Effect of adoption of IFRS 15 (Note 2ai)		—			—			(8,725,841	)
Closing balance as of December 31,	Ps.	98,589,818		Ps.	104,573,985		Ps.	86,613,327
Presented in the consolidated statements of financial position as follows:
Deferred income tax assets	Ps.	112,651,699		Ps.	116,571,349		Ps.	111,186,768
Deferred income tax liabilities		(14,061,881	)		(11,997,364	)		(24,573,441	)
	Ps.	98,589,818		Ps.	104,573,985		Ps.	86,613,327

The deferred tax assets are in tax jurisdictions in which the Company considers that based on financial projections of its cash flows, results of operations and synergies between subsidiaries, will generate sufficient taxable income in subsequent periods to utilize or realize such assets.

The Company does not recognize a deferred tax liability related to the undistributed earnings of its subsidiaries, because it currently does not expect these earnings to be taxable or to be repatriated in the near future. The Company’s policy has been to distribute the profits when it has paid the corresponding taxes in its home jurisdiction and the tax can be accredited in Mexico.

At December 31, 2017 and 2018, the balance of the contributed capital account (“CUCA”) is Ps. 510,832,194 and Ps. 536,278,717, respectively. On January 1, 2014, the Cuenta de Utilidad Fiscal Neta (“CUFIN”) is computed on an América Móvil’s stand-alone basis. The balance of the América Móvil’s stand-alone basis CUFIN amounted to Ps. 225,105,342 and Ps. 276,185,284 as of December 31, 2017 and 2018, respectively.

Corporate tax rate

The income tax rate applicable in Mexico from 2016 through 2018 was 30%.

ii) Significant foreign income tax matters

a) Results of operations

The foreign subsidiaries determine their taxes on profits based on their individual taxable income, in accordance with the specific tax regimes of each country.

The combined income before taxes and the combined provision for taxes of such subsidiaries in 2016, 2017 and 2018 are as follows:

	2016		2017		2018
Combined income before taxes	Ps.	45,697,258	Ps.	38,286,046	Ps.	66,314,883
Combined tax provision differences not deducible-not cumulative in the foreign subsidiaries	Ps.	9,169,083	Ps.	5,790,950	Ps.	20,593,392

The effective income tax rate for the Company’s foreign jurisdictions was 20% in 2016, 15% in 2017 and 31% in 2018 as shown in the table above. The statutory tax rates in these jurisdictions vary, although many approximate 21% to 40%. The primary difference between the statutory rates and the effective rates in 2016, 2017 and 2018 was attributable to dividends received from KPN and other non-deductible items and non-taxable income.

iii) Tax losses

a) At December 31, 2018, the available tax loss carryforwards recorded in deferred tax assets are as follows on a country by country basis:

Country	Balance of available tax loss carryforwards at December 31, 2018		Tax loss carryforward benefit
Brazil		Ps. 59,695,441		Ps. 20,296,450
Austria		20,128,833		5,032,208
Mexico		6,043,603		1,813,081
Colombia		2,239,486		739,030
Nicaragua		2,403		722
Total		Ps. 88,109,766		Ps. 27,881,491

b) The tax loss carryforwards in the different countries in which the Company operates have the following terms and characteristics:

bi) The Company has accumulated Ps. 59,695,441 in net operating loss carryforwards (NOL’s) in Brazil as of December 31, 2018. In Brazil there is no expiration of the NOL’s. However, the NOL´s amount used against taxable income in each year may not exceed 30% of the taxable income for such year. Consequently, in the year in which taxable income is generated, the effective tax rate is 25% rather than the 34% corporate tax rate.

The Company believes that it is more likely than not that the accumulated balances of its net deferred tax assets are recoverable, based on the positive evidence of the Company to generate future taxable income related to the same taxation authority which will result in taxable amounts against which the available tax losses can be utilized before they expire. Positive evidence includes the Company’s recent restructure in 2017 of its operations in Brazil, resulting in an organizational structure that is anticipated to be more efficient and profitable and generated taxable income in 2018.

bii) The Company has accumulated Ps. 20,128,833 in NOL’s in Austria as of December 31, 2018. In Austria, the NOL´s have no expiration, but its annual usage is limited to 75% of the taxable income of the year. The realization of deferred tax assets is dependent upon the expected generation of future taxable income during the periods in which these temporary differences become deductible.

biii) The Company has accumulated $ 6,043,603 of tax losses in Mexico. The Mexican Tax Law establishes an optional regime for group companies called: Of the Optional Regime for Groups of Companies. For these purposes, the integrating (controlling) company must own more than 80% of the shares with voting rights of the integrated (controlled) companies. In general terms, the Integration regime allows to differ, for each of the companies that make up the group, and for up to three years, or sooner if certain assumptions are made, the whole of the ISR that results from considering the determination of the individual ISR to its charge is the effect derived from recognizing, indirectly, the tax losses incurred by the companies in the group for the year in question.

The company estimates that there is positive evidence that allows it to use these losses, these should be reduced to the extent that it is considered likely that there will be sufficient taxable profits to allow them to recover in full or in part, the losses will only be compensated when there is a right legally required and are approved by the tax authorities in Mexico.

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Debt

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Debt

14. Debt

a) The Company’s short- and long-term debt consists of the following:

At December 31, 2017					(Thousands of Mexican pesos)
Currency	Loan	Interest rate	Maturity		Total
Senior Notes
U.S. dollars
	Fixed-rate Senior notes (i)	5.000%		2019	Ps.	14,840,025
	Fixed-rate Senior notes (i)	5.500%		2019		7,467,145
	Fixed-rate Senior notes (i)	5.000%		2020		42,043,077
	Fixed-rate Senior notes (i)	3.125%		2022		31,658,720
	Fixed-rate Senior notes (i)	6.375%		2035		19,417,282
	Fixed-rate Senior notes (i)	6.125%		2037		7,305,744
	Fixed-rate Senior notes (i)	6.125%		2040		39,573,400
	Fixed-rate Senior notes (i)	4.375%		2042		22,754,705
	Subtotal U.S. dollars				Ps.	185,060,098
Mexican pesos
	Domestic Senior notes (i)	8.110%		2018	Ps.	1,750,000
	Domestic Senior notes (i)	8.270%		2018		1,160,110
	Domestic Senior notes (i)	8.600%		2020		7,000,000
	Domestic Senior notes (i)	0.000%		2025		4,409,873
	Domestic Senior notes (i)	8.360%		2037		5,000,000
	Fixed-rate Senior notes (i)	6.000%		2019		10,000,000
	Fixed-rate Senior notes (i)	6.450%		2022		22,500,000
	Fixed-rate Senior notes (i)	7.125%		2024		11,000,000
	Fixed-rate Senior notes (i)	8.460%		2036		7,871,700
	Subtotal Mexican pesos				Ps.	70,691,683
Euros
	Fixed-rate Senior notes (i)	1.000%		2018	Ps.	14,252,360
	Fixed-rate Senior notes (i)	4.125%		2019		23,753,933
	Exchangeable Bonds (i)	0.000%		2020		67,504,878
	Fixed-rate Senior notes (i)	3.000%		2021		23,753,933
	Fixed-rate Senior notes (i)	3.125%		2021		18,727,775
	Fixed-rate Senior notes (i)	4.000%		2022		19,333,685
	Fixed-rate Senior notes (i)	4.750%		2022		17,815,450
	Fixed-rate Senior notes (i)	3.500%		2023		7,594,262
	Fixed-rate Senior notes (i)	3.259%		2023		17,815,450
	Fixed-rate Senior notes (i)	1.500%		2024		20,190,843
	Fixed-rate Senior notes (i)	1.500%		2026		17,815,450
	Fixed-rate Senior notes (i)	2.125%		2028		15,440,057
	Subtotal Euros				Ps.	263,998,076
Pounds sterling
	Fixed-rate Senior notes (i)	5.000%		2026	Ps.	13,368,884
	Fixed-rate Senior notes (i)	5.750%		2030		17,379,549
	Fixed-rate Senior notes (i)	4.948%		2033		8,021,330
	Fixed-rate Senior notes (i)	4.375%		2041		20,053,326
	Subtotal Pounds sterling				Ps.	58,823,089
Swiss francs
	Fixed-rate Senior notes (i)	1.125%		2018	Ps.	11,169,748
	Subtotal Swiss francs				Ps.	11,169,748
Brazilian reais
	Debenture (i)	102.900% of CDI		2020	Ps.	8,972,204
	Promissory Note (i)	102.400% of CDI		2019		5,981,469
	Debenture (i)	103.900% of CDI		2019		5,981,469
	Subtotal Brazilian reais				Ps.	20,935,142
Other currencies
Japanese yen
	Fixed-rate Senior notes (i)	2.950%		2039	Ps.	2,282,608
	Subtotal Japanese yen				Ps.	2,282,608
Chilean pesos
	Fixed-rate Senior notes (i)	3.961%		2035	Ps.	4,312,424
	Subtotal Chilean pesos				Ps.	4,312,424
	Subtotal other currencies				Ps.	6,595,032
Hybrid Notes
Euros
	Euro NC5 Series A Capital Securities (iii)	5.125%		2073	Ps.	21,378,540
	Euro NC10 Series B Capital Securities (iii)	6.375%		2073		13,064,663
	Subtotal Euros				Ps.	34,443,203
Pounds sterling
	GBP NC7 Capital Securities (iii)	6.375%		2073	Ps.	14,705,772
	Subtotal Pounds sterling				Ps.	14,705,772
	Subtotal Hybrid Notes				Ps.	49,148,975
Lines of Credit and others
U.S. dollars
	Lines of credit (ii)	L + 0.200% and 1.500% - 7.250%		2018 - 2019	Ps.	14,474,350
Mexican pesos
	Lines of credit (ii)	TIIE + 0.040% - TIIE + 0.175%		2018 - 2019	Ps.	12,500,000
Brazilian reais
	Lines of credit (ii)	107% of CDI - TJLP + 3.500% & 3.000% - 9.500%		2018 -2027	Ps.	4,389,260
Chilean pesos
	Financial Leases	8.700% - 8.970%		2018 - 2027	Ps.	99,446
	Subtotal Lines of Credit and others				Ps.	31,463,056
	Total debt				Ps.	697,884,899
	Less: Short-term debt and current portion of long-term debt				Ps.	51,745,841
	Long-term debt				Ps.	646,139,058

At December 31, 2018					(Thousands of Mexican pesos)
Currency	Loan	Interest rate	Maturity		Total
Senior Notes
U.S. dollars
	Fixed-rate Senior notes (i)	5.000%		2019	Ps.	14,762,175
	Fixed-rate Senior notes (i)	5.500%		2019		7,427,972
	Fixed-rate Senior notes (i)	5.000%		2020		41,822,521
	Fixed-rate Senior notes (i)	3.125%		2022		31,492,640
	Fixed-rate Senior notes (i)	6.375%		2035		19,315,420
	Fixed-rate Senior notes (i)	6.125%		2037		7,267,419
	Fixed-rate Senior notes (i)	6.125%		2040		39,365,800
	Fixed-rate Senior notes (i)	4.375%		2042		22,635,335
	Subtotal U.S. dollars				Ps.	184,089,282
Mexican pesos
	Fixed-rate Senior notes (i)	6.000%		2019	Ps.	10,000,000
	Domestic Senior notes (i)	8.600%		2020		7,000,000
	Fixed-rate Senior notes (i)	6.450%		2022		22,500,000
	Fixed-rate Senior notes (i)	7.125%		2024		11,000,000
	Domestic Senior notes (i)	0.000%		2025		4,629,425
	Fixed-rate Senior notes (i)	8.460%		2036		7,871,700
	Domestic Senior notes (i)	8.360%		2037		5,000,000
	Subtotal Mexican pesos				Ps.	68,001,125
Euros
	Fixed-rate Senior notes (i)	4.125%		2019	Ps.	22,558,572
	Exchangeable Bonds (i)	0.000%		2020		64,107,851
	Fixed-rate Senior notes (i)	3.000%		2021		22,558,572
	Fixed-rate Senior notes (i)	3.125%		2021		17,568,739
	Fixed-rate Senior notes (i)	4.000%		2022		18,028,031
	Fixed-rate Senior notes (i)	4.750%		2022		16,918,929
	Fixed-rate Senior notes (i)	3.500%		2023		7,132,481
	Fixed-rate Senior notes (i)	3.259%		2023		16,918,929
	Fixed-rate Senior notes (i)	1.500%		2024		19,174,786
	Fixed-rate Senior notes (i)	1.500%		2026		16,918,929
	Fixed-rate Senior notes (i)	2.125%		2028		14,663,072
	Subtotal Euros				Ps.	236,548,891
Pounds sterling
	Fixed-rate Senior notes (i)	5.000%		2026	Ps.	12,550,801
	Fixed-rate Senior notes (i)	5.750%		2030		16,316,042
	Fixed-rate Senior notes (i)	4.948%		2033		7,530,481
	Fixed-rate Senior notes (i)	4.375%		2041		18,826,202
	Subtotal Pounds sterling				Ps.	55,223,526
Brazilian reais
	Debenture (i)	103.900% of CDI		2019	Ps.	5,079,720
	Promissory notes (i)	102.400% of CDI		2019		5,079,720
	Promissory notes (i)	103.205% of CDI		2019		1,828,699
	Debenture (i)	102.900% of CDI		2020		7,619,580
	Debenture (i)	104.000% of CDI		2021		5,587,692
	Debenture (i)	104.250% of CDI		2021		7,695,776
	Subtotal Brazilian reais				Ps.	32,891,187
Other currencies
Japanese yen
	Fixed-rate Senior notes (i)	2.950%		2039	Ps.	2,334,864
	Subtotal Japanese yen				Ps.	2,334,864
Chilean pesos
	Fixed-rate Senior notes (i)	3.961%		2035	Ps.	3,904,707
	Subtotal Chilean pesos				Ps.	3,904,707
	Subtotal other currencies				Ps.	6,239,571
Hybrid Notes
Euros
	Euro NC10 Series B Capital Securities (iii)	6.375%		2073	Ps.	12,407,214
	Subtotal Euros				Ps.	12,407,214
Pounds sterling
	GBP NC7 Capital Securities (iii)	6.375%		2073	Ps.	13,805,881
	Subtotal Pounds sterling				Ps.	13,805,881
	Subtotal Hybrid Notes					26,213,095
Lines of Credit and others
U.S. dollars
	Lines of credit (ii)	L + 0.200% and 1.500% - 8.950%		2019 - 2021	Ps.	11,698,885
Mexican pesos
	Lines of credit (ii)	TIIE + 0.175%		2019	Ps.	4,500,000
Euros
	Lines of credit (ii)	-0.100% - 0.000%		2019	Ps.	5,526,850
Brazilian reais
	Lines of credit (ii)	5.000% - 6.000%		2019 - 2027	Ps.	27,009
Peruvian Soles
	Lines of credit (ii)	4.700% - 12.100%		2019	Ps.	7,898,595
Chilean pesos
	Financial Leases	8.700% - 8.970%		2019 - 2027	Ps.	64,437
	Subtotal Lines of Credit and others				Ps.	29,715,776
	Total debt				Ps.	638,922,453
	Less: Short-term debt and current portion of long-term debt				Ps.	96,230,634
	Long-term debt				Ps.	542,691,819

L = LIBOR (London Interbank Offer Rate)

TIIE = Mexican Interbank Rate

EURIBOR = Euro Interbank Offered Rate

CDI = Brazil Interbank Deposit Rate

TJLP = Brazil Long Term Interest Rate

Interest rates on the Company’s debt are subject to variances in international and local rates. The Company’s weighted average cost of borrowed funds at December 31, 2017, and December 31, 2018 was approximately 4.30% and 4.31%, respectively.

Such rates do not include commissions or the reimbursements for Mexican tax withholdings (typically a tax rate of 4.9%) that the Company must pay to international lenders.

An analysis of the Company’s short-term debt maturities as of December 31, 2017, and December 31, 2018, is as follows:

	2017		2018
Obligations and Senior Notes		Ps.    28,994,496		Ps.      67,365,810
Lines of credit		22,714,383		28,852,364
Financial Leases		36,962		12,460
Total		Ps.    51,745,841		Ps.      96,230,634
Weighted average interest rate		4.0%		5.20%

The Company’s long-term debt maturities as of December 31, 2018 are as follows:

Years	Amount
2020	Ps.	121,184,630
2021		54,189,122
2022		88,027,828
2023 and thereafter		279,290,239
Total	Ps.	542,691,819

(i) Senior Notes

The outstanding Senior Notes at December 31, 2017, and December 31, 2018, are as follows:

Currency*	2017		2018
U.S. dollars		Ps. 185,060,098		Ps.    184,089,282
Mexican pesos		70,691,683		68,001,125
Euros**		263,998,076		236,548,891
Pounds sterling**		58,823,089		55,223,526
Swiss francs		11,169,748		—
Brazilian reais		20,935,142		32,891,187
Japanese yens		2,282,608		2,334,864
Chilean pesos		4,312,424		3,904,707

* Thousands of Mexican pesos

** Includes secured and unsecured senior notes.

(ii) Lines of credit

At December 31, 2017, and December 31, 2018, debt under lines of credit aggregated to Ps. $31,364 million and Ps. $29,651 million, respectively.

The Company has two revolving syndicated credit facilities, one for the Euro equivalent of U.S. $2,000 million and the other for U.S. $2,500 million maturing in 2021 and 2019, respectively. As long as the facilities are committed, a commitment fee is paid. As of December 31, 2018, these credit facilities were undrawn. Telekom Austria has also an undrawn revolving syndicated credit facility in Euros for €1,000 million that matures in 2019.

(iii) Hybrid Notes

On September 2013, the Company issued three series of Capital Securities (hybrid notes) maturing in 2073: two series denominated in Euros for €1,450 million with a coupon of 5.125% and 6.375% respectively, and one series denominated in pounds sterling in the amount of £550 million with a coupon of 6.375%. The Capital Securities are deeply subordinated, and when they were issued the principal rating agencies stated that they would treat only half of the principal amount as indebtedness for purposes of evaluating our leverage (an analysis referred to as 50.0% equity credit). The Capital Securities are subject to redemption at our option at varying dates beginning in 2018 and 2023, respectively, for the euro-denominated series and beginning in 2020 for the sterling-denominated series.

On September 2018, we exercised the option to call our hybrid bond with a maturity date in 2073 for a total amount of €900 million euros.

KPN

On September 2018, América Móvil delivered 224,695,844 KPN shares, equivalent to 5% of the total outstanding shares, after the maturity of a mandatory conversion bond with a nominal outstanding amount of €750 million Euros.

The transaction represented the sale of those shares at an effective price of €3.3374 euros per share.

Restrictions

A portion of the debt is subject to certain restrictions with respect to maintaining certain financial ratios, as well as restrictions on selling a significant portion of groups of assets, among others. At December 31, 2018, the Company was in compliance with all these requirements.

A portion of the debt is also subject to early maturity or repurchase at the option of the holders in the event of a change in control of the Company, as defined in each instrument. The definition of change in control varies from instrument to instrument; however, no change in control shall be considered to have occurred as long as its current shareholders continue to hold the majority of the Company’s voting shares.

“Covenants”

In conformity with the credit agreements, the Company is obliged to comply with certain financial and operating commitments. Such covenants limit in certain cases, the ability of the Company or the guarantor to: pledge assets, carry out certain types of mergers, sell all or substantially all of its assets, and sell control of Telcel.

Such covenants do not restrict the ability of AMX’s subsidiaries to pay dividends or other payment distributions to AMX. The more restrictive financial covenants require the Company to maintain a consolidated ratio of debt to EBITDA (defined as operating income plus depreciation and amortization) that does not exceed 4 to 1, and a consolidated ratio of EBITDA to interest paid that is not below 2.5 to 1 (in accordance with the clauses included in the credit agreements).

Several of the financing instruments of the Company may be accelerated, at the option of the debt holder in the case that a change in control occurs.

At December 31, 2018, the Company was in compliance with all the covenants.

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Accounts payable, accrued liabilities and asset retirement obligations

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Accounts payable, accrued liabilities and asset retirement obligations

15. Accounts payable, accrued liabilities and asset retirement obligations

a) The components of the caption accounts payable and accrued liabilities are as follows:

	At December 31,
	2017		2018
Suppliers		Ps. 106,483,848		Ps. 118,406,380
Sundry creditors		91,842,929		91,087,197
Interest payable		8,930,561		8,535,519
Guarantee deposits from customers		1,460,286		1,421,336
Dividends payable		3,955,783		2,506,835
Total		Ps. 212,673,407		Ps. 221,957,267

b) The balance of accrued liabilities at December 31, 2017 and 2018 are as follows:

	At December 31,
	2017		2018
Current liabilities
Direct employee benefits payable		Ps. 16,673,627		Ps. 16,152,118
Contingencies		51,079,131		40,281,573
Total		Ps. 67,752,758		Ps. 56,433,691

The movements in contingencies for the years ended December 31, 2017 and 2018 are as follows:

Balance at December 31, 2016

Business combination

Effect of translation

Increase of the year

Applications

Balance at December 31, 2017

Payments

Reversals

Contingencies

Ps. 50,766,070

Ps. 115,971

Ps. (648,685)

Ps. 10,510,473

Ps. (7,618,520)

Ps. (2,046,178)

Ps. 51,079,131

Balance at December 31, 2017

Business combination

Effect of translation

Increase of the year

Applications

Balance at December 31, 2018

Payments

Reversals

Contingencies

Ps. 51,079,131

Ps. 7,812

Ps. (5,729,826)

Ps. 15,683,252

Ps. (6,203,329)

Ps. (14,555,467)

Ps. 40,281,573

Contingencies include tax, labor, regulatory and other legal type contingencies. See Note 16 c) for detail of contingencies.

c) The movements in the asset retirement obligations for the years ended December 31, 2017 and 2018 are as follows:

Balance at    December 31,   2016

Effect of      translation

Increase of     the year

Applications

Balance at      December 31,     2017

Payments

Reversals

Asset retirement obligations

Ps. 16,288,631

Ps. (119,928)

Ps. 3,160,320

Ps. (126,088)

Ps. (957,806)

Ps. 18,245,129

Balance at  December 31,  2017

Effect of  translation

Increase of  the year

Applications

Balance at  December 31,  2018

Payments

Reversals

Asset retirement obligations

Ps. 18,245,129

Ps. (2,020,853)

Ps. 1,062,745

Ps. (151,364)

Ps. (1,164,056)

Ps. 15,971,601

The discount rates used for the asset retirement obligation are based on market rates that are expected to be undertaken by the dismantling or restoration of cell sites, and may include labor costs.

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Commitments and Contingencies

16. Commitments and Contingencies

a) Leases

At December 31, 2017 and 2018, the Company has entered into several lease agreements with related parties and third parties for the buildings where its offices are located (as a lessee), as well as with the owners of towers and or premises where the Company has installed radio bases.

An analysis of the minimum rental payments for the next five years is shown below. In some cases, rental amounts are increased each year based on the National Consumer Price Index (INPC).

The Company has the following non-cancelable commitments under finance leases:

Year ended December 31,
2019	Ps.	22,920
2020		13,365
2021		12,068
2022		10,751
2023		9,399
2024 and thereafter		34,011
Total	Ps.	102,514
Less: amounts representing finance charges		23,837
Present value of net minimum lease payments		78,677
Less current portion		14,240
Long-term obligations	Ps.	64,437

An analysis of non-cancellable operating leases is as follows:

Year ended December 31,
2019	Ps.	24,034,366
2020		22,104,366
2021		15,522,020
2022		14,250,332
2023		12,046,800
2024 and thereafter		49,991,937
Total	Ps.	137,949,821

Rent expense for the years ended December 31, 2016, 2017 and 2018 was Ps. 32,300,963, Ps. 35,571,283 and Ps. 34,421,817, respectively.

b) Commitments

The Company and its subsidiaries have commitments that mature on different dates, referring to CAPEX and cell phone purchases.

As of December 31, 2018, the total amounts equivalent to the contract period are detailed below:

Year ended December 31,
2019	Ps.	88,233,626
2020		68,170,083
2021		55,358,156
2022		13,322,961
Total	Ps.	225,084,826

c) Contingencies

I. MEXICO

Tax Assessment and Fine

In 2014, the Mexican Tax Administration Service (Servicio de Administración Tributaria or “SAT”) notified the Company of a Ps. 529,700 tax assessment related to the Company’s tax return for the fiscal year ended December 31, 2005, and reduced the Company’s consolidated tax loss for that year from Ps. 8,556,000 to zero. The Company has challenged this assessment before the Mexican courts and a final resolution is pending. The Company has not established a provision in the accompanying consolidated financial statements for a loss arising from this assessment, which it does not consider probable.

In 2012, the SAT notified the Company and its subsidiary Sercotel, S.A. de C.V. (“Sercotel”) of a fine of approximately Ps. 1,400,000 for alleged tax improprieties arising from the transfer of certain accounts receivable from one of the Company’s subsidiaries to Sercotel. In 2014, the Company challenged the fine and a final resolution is pending. The Company has not established a provision in the accompanying consolidated financial statements for a loss arising from this fine, which the Company does not consider probable.

Telcel Mobile Termination Rates

The mobile termination rates between Telcel and other network operators have been the subject of various legal proceedings. With respect to the interconnection fees for 2017, 2018 and 2019, Telcel has challenged the applicable resolutions and final resolutions are pending.

Given the fact that the “zero rate” that prevented Telcel from charging interconnection rates in its mobile network was held unconstitutional by the (Suprema Corte de Justicia de la Nación “SCJN”), the IFT has determined asymmetric interconnection rates for the termination of traffic in Telcel’s and other operators’ networks for 2018 and 2019. The resolutions setting such rates have been challenged by Telcel and final resolutions are pending.

The Company expects that mobile termination rates, as well as other rates applicable to mobile interconnection (such as transit), will continue to be the subject of litigation and administrative proceedings in Mexico. The Company cannot predict when or how these matters will be resolved or the financial effects of any such resolution.

Class Action Lawsuits

Telcel is subject to two class action lawsuits initiated by customers allegedly affected by Telcel’s quality of service and wireless and broadband rates. The Company cannot assess whether these class action lawsuits could have an adverse effect on the Company’s business and results of operations in the event that they are resolved against Telcel due to the lack of factual and legal claims underlying these proceedings. Consequently, the Company has not established a provision in the accompanying consolidated financial statements for a loss arising from these proceedings.

IFT Proceedings Against Telmex

In 2008, Telmex entered into certain commercial agreements with Dish México Holdings, S. de R.L. de C.V. and related companies (“Dish”), involving billing, collection services, distribution and equipment leasing. In addition, Telmex had an option to purchase shares representing 51% of the capital stock of Dish México, S. de R.L. de C.V. (“Dish México”). In 2014, Telmex waived its rights under the option.

In 2015, the IFT imposed a fine of Ps. 14,414 on Telmex on the grounds that the IFT was not notified of an alleged merger (concentración) between Telmex and Dish in 2008. Telmex filed an appeal for relief (amparo) and a final resolution is pending.

In 2015, in relation with some Dish operations, the IFT initiated several proceedings in order to determine potential violations of (i) Telmex’s concession, with respect to an alleged indirect exploitation of a public television services concession, which in 2019, the appeal for relief was granted by a competent court (Tribunal Colegiado); the Company cannot predict the outcome of such proceedings, and (ii) certain provisions of the Mexican Constitution (Constitución Política de los Estados Unidos Mexicanos) and the Federal Telecommunications and Broadcasting Law (Ley Federal de Telecomunicaciones y Radiodifusión) regarding the cost-free rule of re-transmission of television broadcast signals (commonly known as “must offer”), through other operators. In 2018, the IFT absolved Telmex and Dish from any responsibility in connection with the sanction procedure initiated by the IFT for the alleged violation of item (ii) above.

In 2018, the IFT imposed a fine of Ps. 2,543,937 on Telmex relating to a sanction procedure triggered by the alleged breach in 2013 and 2014 of certain minimum quality goals for link services. Telmex challenged this fine and a final resolution is pending.

II. BRAZIL

a. Tax Matters

ICMS

As of December 31, 2018, the Company’s Brazilian subsidiaries Claro Brasil, Primesys Soluções Empresariais S.A. (“Primesys”), Telmex Do Brasil Ltda. (“TdB”), Americel S.A. (“Americel”), Brasil Telecomunicações S.A. (“BrTel”) and TVSAT Telecomunicações S.A. (“TV SAT”), had aggregate tax contingencies related to value-added tax (“ICMS”) of approximately Ps. 55,455,306 (R$ 10,917,000). As of December 31, 2018, the Company has established a provision of Ps. 3,362,775 (R$ 662,000) in the accompanying consolidated financial statements for the losses arising from these contingencies which the Company considers probable. Such ICMS contingencies include the following tax assessments which the Company does not consider probable and therefore, has not established a provision in the accompanying consolidated financial statements:

• Tax assessments against Star One, S.A. (currently Claro Brasil as surviving entity of merger) in the amount of Ps. 21,167,194 (R$ 4,167,000) based on allegations that the provision of satellite capacity is subject to ICMS. The Company is contesting these tax assessments in separate proceedings at different litigation stages and has obtained favorable judicial decisions in two proceedings.

• Tax assessments against Claro Brasil and Americel in the amount of Ps. 5,861,997 (R$ 1,154,000), due to a decision that held certain benefits granted by the Brazilian states unconstitutional.

• Tax assessment against Primesys in the amount of Ps. 3,916,464 (R$ 771,000), related to ICMS over certain activities not deemed to be part of data communication services.

CSLL/IRPJ

As of December 31, 2018 Claro Brasil, Americel, BrTel, and TV SAT had aggregate tax contingencies related to Social Contribution on Net income (“CSLL”) and Corporate Income Tax (“IRPJ”) in the amount of Ps. 17,779,021 (R$ 3,500,000). As of December 31, 2018, the Company has established a provision of Ps. 4,835,894 (R$ 952,000) in the accompanying consolidated financial statements for the losses arising from these contingencies, which the Company considers probable.

The aforementioned CSLL/IRPJ contingencies include a tax assessment against Claro Brasil in the amount of Ps. 10,906,159 (R$ 2,147,000) alleging the undue amortization of goodwill amounts between 2009 and 2012, and charging CSLL, IRPJ and penalties due to the late payment of taxes. Claro Brasil has challenged this assessment at the administrative level and a final resolution is pending. The Company has established a provision of Ps. 558,769 (R$ 110,000) in the accompanying consolidated financial statements for the losses arising from these contingencies, which the Company considers probable.

PIS/COFINS

As of December 31, 2018, Claro Brasil, Americel, TdB, Primesys and Brasil Center Comunicações Ltda. (“Brasil Center”) had aggregate tax assessments related to Social Integration Program (“PIS”) and Contribution for Social Security Financing (“COFINS”) in the amount of Ps. 16,488,772 (R$ 3,246,000). As of December 31, 2018, the Company has established a provision of Ps. 5,861,997 (R$ 1,154,000) in the accompanying consolidated financial statements for the losses arising from the PIS/COFINS assessments, which the Company considers probable. With respect to such PIS/COFINS assessments:

• Claro Brasil and Americel have commenced lawsuits against the Brazilian Federal Revenue Service seeking a ruling on constitutional grounds to exclude interconnection fees from the base used to calculate PIS and COFINS tax obligations. Pending a final resolution and pursuant to applicable Brazilian procedure, the companies have paid the tax based on their position in the lawsuits and have established a provision for the disputed amounts. As of December 31, 2018, the total amount in dispute was approximately Ps. 5,221,952 (R$ 1,028,000).

• Tax assessments against Claro Brasil and Americel related to the offset of PIS and COFINS credits recorded in the noncumulative method in an amount of Ps. 8,183,429 (approximately R$ 1,611,000) as of December 31, 2018. The Company has not established a provision in the accompanying consolidated financial statements to cover the losses arising from this contingency, which the Company does not consider probable.

As of September 30, 2018, based on a favorable decision from the Brazilian Supreme Court concerning the exclusion of ICMS from PIS and COFINS, the Company reverted the provision of Ps. 13,034,562 (R$2,566,000).

FUST/FUNTTEL

Anatel has initiated administrative proceedings against Claro Brasil, Americel, Primesys, TdB, BrTel and TVSAT in an aggregate amount of Ps. 14,223,217 (R$ 2,800,000) mainly based on an allegedly improper exclusion of interconnection revenues and costs from the basis used to calculate its Fund for Universal Telecommunication Services (“FUST”) obligations. The companies are contesting these assessments. As of December 31, 2018, the Company has established a provision of Ps. 1,706,786 (R$ 336,000) in the accompanying consolidated financial statements to cover the losses arising from these assessments, which the Company considers probable.

In addition, the Brazilian Ministry of Communications (Ministério das Comunicações) has initiated administrative proceedings against Claro Brasil, Americel, Primesys, TdB, BrTel and TVSAT totaling an amount of Ps. 5,115,278 (R$ 1,007,000) as of December 31, 2018, due to an alleged underpayment of their obligations to the telecommunications Technology Development Fund (“FUNTTEL”). The companies have challenged these assessments and a final resolution is pending. As of December 31, 2018, the Company has established a provision of Ps. 5,080 (R$ 1,000) in the accompanying consolidated financial statements to cover the losses arising from these assessments, which the Company considers probable.

ISS

The Municipal Revenue Services have issued tax assessments against Claro Brasil, Brasil Center and Primesys, totaling an aggregate amount of approximately Ps. 3,637,080 (R$ 716,000) due to the alleged nonpayment of Brazilian Services tax (“ISS”) over several telecommunication services, including Pay TV services, considered as taxable for ISS by these authorities. The companies have challenged the tax assessments on the grounds that the services cited are not subject to ISS tax and a final resolution is pending. As of December 31, 2018, the Company has established a provision of Ps. 25,399 (R$ 5,000) in the accompanying financial statements for the losses arising from these assessments, which the Company considers probable.

TFI

As of December 31, 2018, Anatel fined Claro Brasil and Americel a total of Ps. 13,207,273 (R$ 2,600,000), for an unpaid installation inspection fee (Taxa de Fiscalização de Instalação, or “TFI”) allegedly due for the renovation of radio base stations. Claro Brasil and Americel have challenged the fine, arguing that there was no new equipment installation that could lead to this charge, and a final resolution is pending. The Company has not established a provision in the accompanying consolidated financial statements to cover losses arising from these proceedings, which the Company does not consider probable.

Other Tax Contingencies

There are other several tax contingencies involving Claro Brasil, Americel, TdB and Primesys in an aggregate amount of Ps. 12,394,517 (R$ 2,440,000) related to a variety of taxes and government programs. As of December 31, 2018, the Company has established a provision of Ps. 1,117,538 (R$ 220,000) in the accompanying consolidated financial statements for the losses arising from these contingencies, which the Company considers probable.

b. Regulatory Matters

Inflation-Related Adjustments

Anatel has challenged the calculation of inflation-related adjustments due under the concession agreements with Tess S.A. (“Tess”), and Algar Telecom Leste S.A. (“ATL”), two of the Company’s subsidiaries that were previously merged into Claro Brasil. Anatel rejected Tess and ATL’s calculation of the inflation-related adjustments applicable to 60% of the concessions price (which was due in three equal annual installments, subject to inflation-related adjustments and interest), claiming that the companies’ calculation of the inflation-related adjustments resulted in a shortfall of the installment payments. The companies have filed declaratory and consignment actions seeking the resolution of the disputes and have obtained injunctions from a federal appeals court suspending payment until the pending appeals are resolved.

The amount of the alleged shortfall as well as the method used to calculate monetary corrections are in dispute. If other methods or assumptions are applied, the amount may increase. In 2018, Anatel calculated the monetary correction in a total amount of Ps. 19,302,937 (R$ 3,800,000). As of December 31, 2018, the Company has established a provision of Ps. 3,419,668 (R$ 673,200) in the accompanying consolidated financial statements for the losses arising from these contingencies, which the Company considers probable.

III. ECUADOR

In 2014, following a regulatory claim filed in 2012 by state-owned operator Corporación Nacional de Telecomunicaciones (“CNT”), the Superintendency of Control of Market Power (Superintendencia de Control del Poder del Mercado, or “SCPM”), imposed a fine of Ps.2,724,113 (US$138,400), on Conecel for alleged monopolistic practices. CNT alleged that Conecel had exclusive rights to deploy its network in five locations and thereby prevented CNT from deploying its own network in the same locations. Conecel challenged the fine before the Administrative Dispute Tribunal (Tribunal de lo Contencioso Administrativo), denying any wrongdoing and contends that CNT had other alternative sites in the same locations where it could have deployed its network.

In 2018, the Administrative Dispute Tribunal (Tribunal de lo Contencioso Administrativo), issued a ruling in favor of Conecel, declaring the fine null and void. The SCPM filed an appeal before the National Court of Justice and the appeal was declared inadmissible by such Court on March 14, 2019; nevertheless, this decision may not be final.

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Employee Benefits

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Employee Benefits

17. Employee Benefits

An analysis of the net liability and net period cost for employee benefits is as follows:

	At December 31,
	2017		2018
Liability:
Mexico	Ps.	84,821,197	Ps.	85,517,190
Puerto Rico		13,962,128		13,986,596
Europe		14,833,840		12,705,926
Brazil		6,276,780		5,666,694
Ecuador		403,194		448,608
Total		Ps. 120,297,139	Ps.	118,325,014

	For the year ended December 31,
	2016		2017		2018
Net period cost (benefit)
Mexico	Ps.	12,281,154	Ps.	11,586,065	Ps.	12,046,208
Puerto Rico		1,058,131		776,238		686,067
Europe		226,447		385,689		619,039
Brazil		633,159		735,855		579,432
Ecuador		41,380		152,335		58,354
Total	Ps.	14,240,271	Ps.	13,636,182	Ps.	13,989,100

a) Defined benefit plan

The defined benefit obligation (DBO) and plan assets for the pension and other benefit obligation plans, by country, are as follows:

	At December 31
	2017								2018
	DBO		Plan Assets		Effect of asset celling		Net employee benefit liability		DBO		Plan Assets		Effect of asset celling		Net employee benefit liability
Mexico	Ps.	266,304,948	Ps.	(182,539,376)	Ps.	—	Ps.	83,765,572	Ps.	247,997,060	Ps.	(163,404,418)	Ps.	—	Ps.	84,592,642
Puerto Rico		38,711,695		( 24,749,567)		—		13,962,128		35,220,889		( 21,234,293)		—		13,986,596
Brazil		19,369,664		( 20,399,661)		6,519,560		5,489,563		18,795,315		( 19,032,411)		5,087,543		4,850,447
Europe		4,554,912		—		—		4,554,912		4,477,042		—		—		4,477,042
Total	Ps.	328,941,219	Ps.	(227,688,604)	Ps.	6,519,560	Ps.	107,772,175	Ps.	306,490,306	Ps.	(203,671,122)	Ps.	5,087,543	Ps.	107,906,727

Below is a summary of the actuarial results generated for the pension and retirement plans as well as the medical services in Puerto Rico and Brazil; the pension plans and seniority premiums related to Telmex; the pension plan, the service awards plan and severance in Austria corresponding to the years ended December 31, 2016, 2017 and 2018:

	At December 31, 2016
	DBO			Plan Assets			Effect of asset celling			Net employee benefit
Balance at the beginning of the year	Ps.	314,049,729		Ps.	(212,234,440	)	Ps.	4,823,147		Ps.	106,638,436
Current service cost		4,606,856									4,606,856
Interest cost on projected benefit obligation		27,275,363									27,275,363
Expected return on plan assets					(18,972,042	)					(18,972,042	)
Changes in the asset ceiling during the period and others								875,192			875,192
Past service costs and other					165,851						165,851
Actuarial gain for changes in experience		(28,867	)								(28,867	)
Actuarial loss from changes in financial assumptions		7,784									7,784
Net period cost	Ps.	31,861,136		Ps.	(18,806,191	)	Ps.	875,192		Ps.	13,930,137
Actuarial gain for changes in experience		(20,976,837	)								(20,976,837	)
Actuarial loss from changes in demographic assumptions		397,985									397,985
Actuarial loss from changes in financial assumptions		1,718,189									1,718,189
Changes in the asset ceiling during the period and others								(754,535	)		(754,535	)
Return on plan assets greater than discount rate					(4,724,041	)					(4,724,041	)
Recognized in other comprehensive income	Ps.	(18,860,663	)	Ps.	(4,724,041	)	Ps.	(754,535	)	Ps.	(24,339,239	)
Contributions made by plan participants		255,760			(255,760	)					—
Contributions to the pension plan made by the Company					(2,756,519	)					(2,756,519	)
Benefits paid		(25,694,301	)		25,517,599						(176,702	)
Payments to employees		(525,612	)								(525,612	)
Effect of translation		12,196,546			(9,086,269	)		2,139,414			5,249,691
Others	Ps.	(13,767,607	)	Ps.	13,419,051		Ps.	2,139,414		Ps.	1,790,858
Balance at the end of the year		313,282,595			(222,345,621	)		7,083,218			98,020,192
Less short-term portion		(152,448	)								(152,448	)
Non-current obligation	Ps.	313,130,147		Ps.	(222,345,621)		Ps.	7,083,218		Ps.	97,867,744

	At December 31, 2017
	DBO			Plan Assets			Effect of asset celling			Net employee benefit liability
Balance at the beginning of the year	Ps.	313,282,595		Ps.	(222,345,621	)	Ps.	7,083,218		Ps.	98,020,192
Current service cost		4,285,693									4,285,693
Interest cost on projected benefit obligation		28,922,385									28,922,385
Expected return on plan assets					(20,916,104	)					(20,916,104	)
Changes in the asset ceiling during the period and others								716,330			716,330
Past service costs and other					53,032						53,032
Actuarial gain for changes in experience		(35,145	)								(35,145	)
Actuarial gain from changes in demographic assumptions		(85	)								(85	)
Actuarial gain from changes in financial assumptions		(4,294	)								(4,294	)
Net period cost	Ps.	33,168,554		Ps.	(20,863,072	)	Ps.	716,330		Ps.	13,021,812
Actuarial loss for changes in experience		11,671,860									11,671,860
Actuarial gain from changes in demographic assumptions		(381,172	)								(381,172	)
Actuarial loss from changes in financial assumptions		2,438,078									2,438,078
Changes in the asset ceiling during the period and others								(856,188	)		(856,188	)
Return on plan assets greater than discount rate					(2,483,430	)					(2,483,430	)
Recognized in other comprehensive income	Ps.	13,728,766		Ps.	(2,483,430	)	Ps.	(856,188	)	Ps.	10,389,148
Contributions made by plan participants		198,713			(198,713	)					—
Contributions to the pension plan made by the Company					(2,697,621	)					(2,697,621	)
Benefits paid		(18,841,754	)		18,841,754						—
Payments to employees		(9,843,743	)								(9,843,743	)
Effect of translation		(2,579,506	)		2,058,099			(423,800	)		(945,207	)
Others	Ps.	(31,066,290	)	Ps.	18,003,519		Ps.	(423,800	)	Ps.	(13,486,571	)
Balance at the end of the year		329,113,625			(227,688,604	)		6,519,560			107,944,581
Less short-term portion		(172,406	)								(172,406	)
Non-current obligation	Ps.	328,941,219		Ps.	(227,688,604)		Ps.	6,519,560		Ps.	107,772,175

	At December 31, 2018
	DBO			Plan Assests			Effect of asset celling			Net employee benefit liability
Balance at the beginning of the year	Ps.	329,113,625		Ps.	(227,688,604	)	Ps.	6,519,560		Ps.	107,944,581
Current service cost		3,322,813									3,322,813
Interest cost on projected benefit obligation		30,185,257									30,185,257
Expected return on plan assets					(20,804,104	)					(20,804,104	)
Changes in the asset ceiling during the period and others								587,373			587,373
Past service costs and other					157,765						157,765
Actuarial gain for changes in experience		(7,222	)								(7,222	)
Actuarial loss from changes in demographic assumptions		134,625									134,625
Actuarial gain from changes in financial assumptions		(24,890	)								(24,890	)
Net period cost	Ps.	33,610,583		Ps.	(20,646,339	)	Ps.	587,373		Ps.	13,551,617
Actuarial gain for changes in experience		(21,283,470	)								(21,283,470	)
Actuarial loss from changes in demographic assumptions		68,482									68,482
Actuarial gain from changes in financial assumptions		(1,246,539	)								(1,246,539	)
Changes in the asset ceiling during the period and others								(1,055,409	)		(1,055,409	)
Return on plan assets greater than discount rate					23,503,296						23,503,296
Recognized in other comprehensive income	Ps.	(22,461,527	)	Ps.	23,503,296		Ps.	(1,055,409	)	Ps.	(13,640	)
Contributions made by plan participants		173,722			(173,722	)					—
Contributions to the pension plan made by the Company					(1,565,792	)					(1,565,792	)
Benefits paid		(19,546,541	)		19,546,541						—
Payments to employees		(10,651,938	)								(10,651,938	)
Effect of translation		(3,535,477	)		3,353,498			(963,981	)		(1,145,960	)
Others	Ps.	(33,560,234	)	Ps.	21,160,525		Ps.	(963,981	)	Ps.	(13,363,690	)
Balance at the end of the year		306,702,447			(203,671,122	)		5,087,543			108,118,868
Less short-term portion		(212,141	)								(212,141	)
Non-current obligation	Ps.	306,490,306		Ps.	(203,671,122	)	Ps.	5,087,543		Ps.	107,906,727

In the case of other subsidiaries in Mexico, the net period cost (income) of other employee benefits for the years ended December 31, 2016, 2017 and 2018 was Ps. 200,455, Ps. 165,884 and Ps. ( 16,347), respectively. The balance of employee benefits at December 31, 2017 and 2018 was Ps. 1,055,625 and Ps. 924,548, respectively.

In the case of other subsidiaries in Brazil, the net period cost of other employee benefits for the years ended December 31, 2016, 2017 and 2018 was Ps. 65,101, Ps.93,742 and Ps. 98,658, respectively. The balance of employee benefits at December 31, 2017 and 2018 was Ps. 650,815 and Ps. 724,009, respectively.

In the case of Ecuador, the net period cost of other employee benefits for the years ended December 31, 2016, 2017 and 2018 was Ps. 41,380, Ps.152,335 and Ps. 58,354, respectively. The balance of employee benefits at December 31, 2017 and 2018 was Ps. 403,194 and Ps. 448,608, respectively.

Plan assets are invested in:

	At December 31
	2017						2018
	Puerto Rico		Brazil		Mexico		Puerto Rico		Brazil		Mexico
Equity instruments		37%		6%		61%		37%		—		39%
Debt instruments		61%		88%		39%		60%		94%		61%
Others		2%		6%		—		3%		6%		—
		100%		100%		100%		100%		100%		100%

Included in the Telmex’s net pension plan liability are plan assets of Ps. 182,539,376 and Ps. 163,404,418 as of December 31, 2017 and 2018, respectively, of which 32.0% and 30.4% during 2017 and 2018, respectively, were invested in equity and debt instruments of both América Movil and also of related parties, primarily entities that are under common control of the Company’s principal shareholder. The Telmex pension plan recorded a re-measurement of its defined pension plan of Ps. 12,394,617 and Ps. (1,141,142) during 2017 and 2018, respectively, attributable to a change in actuarial assumptions, and also a decline in the fair value of plan investments from December 31, 2017 to December 31, 2018. The decrease in fair value of the aforementioned related party pension plan investments approximated Ps. 437,663 and Ps. 21,279,760 during the year ended December 31, 2017 and 2018, respectively.

The assumptions used in determining the net period cost were as follows:

	2016											2017									2018
	Puerto Rico			Brazil			Mexico			Europe		Puerto Rico		Brazil			Mexico		Europe		Puerto Rico		Brazil			Mexico		Europe
Discount rate and long- term rate return		4.16	%		10.84	%		10.70	%		1.0%, 1.5% & 1.75%		3.61%		10.18	%		10.70%		1.0%,    1.5% & 2.00%		4.45%		9.10	%		11.81%		1.25%,    1.75% & 2.00%
Rate of future salary increases		3.50	%		4.85	%		4.50	%		3.0.%,      3.9% &   4.4%		2.75%		4.50	%		4.50%		3.0.%,    3.5% & 4.4%		2.75%		4.00	%		3.55%		3.0.%,    3.5% & 4.4%
Percentage of increase in health care costs for the coming year		4.20	%		11.35	%							3.57%		11.00	%						3.87%		10.50	%
Year to which this level will be maintained		N/A			2017								N/A		2028							N/A		2029
Rate of increase of pensions								3.83	%		1.60%							3.83%		1.60%							3.47%		1.60%
Employee turnover rate*											0.0%-1.88%									0.0%-1.72%									0.0%-1.51%

* Depending on years of service

Biometric

Puerto Rico:
Mortality:	RP 2014, MSS 2018 Tables.
Disability:	1985 Pension Disability Table
Brazil:
Mortality:	2000 Basic AT Table for gender
Disability for assets:	UP 84 modified table for gender
Disability retirement:	80 CSO Code Table
Rotation:	Probability of leaving the Company other than death, Disability and retirement is zero

Europe

Life expectancy in Austria is base on “AVÖ 2018-P – Rechnungsgrundlagen für die Pensionsversicherung – Pagler & Pagler” (2017: “AVÖ 2008-P – Rechnungsgrundlagen für die Pensionsversicherung – Pagler & Pagler”).

Telmex
Mortality:	Mexican 2000 (CNSF) adjusted
Disability:	Mexican Social Security adjusted by Telmex experience
Turnover:	Telmex experience
Retirement:	Telmex experience

For the year ended December 31, 2018, the Company conducted a sensitivity analysis on the most significant variables that affect the DBO, simulating independently, reasonable changes to roughly 100 basis points in each of these variables. The increase (decrease) would have resulted in the DBO pension and other benefits at December 31, 2018 are as follows:

	-100 points			+100 points
Discount rate	Ps.	37,185,664		Ps.	(38,604,684	)
Health care cost trend rate	Ps.	(651,697	)	Ps.	761,278

Telmex Plans

Part of the Telmex´s employees are covered under defined benefit pension plans and seniority premiums. Pension benefits and seniority premiums are determined on the basis of compensation received by the employees in their final year of employment, their seniority, and their age at the time of retirement. Telmex has set up an irrevocable trust fund to finance these employee benefits and has adopted the policy of making contributions to such fund when it is considered necessary.

Defined benefits plan in Austria

Telekom Austria Group provides defined benefits for certain former employees in Austria. All such employees are retired and were employed prior to January 1, 1975. This unfunded plan provides benefits based on a percentage of salary and years employed, not exceeding 80% of the salary before retirement, and taking into consideration the pension provided by the social security system. Telekom Austria Group is exposed to the risk of development of life expectancy and inflation because the benefits from pension plans are lifetime benefits. Furthermore, approximately 7% of the pension benefit obligations at December 31, 2018 relate to the employees of the company Akenes in Lausanne, acquired in 2017.

Service awards in Austria

Civil servants and certain employees (together ‘employees’) are eligible to receive service awards. Under these plans, eligible employees receive a cash bonus of two months’ salary after 25 years of service and four months’ salary after 40 years of service. Employees with at least 35 years of service when retiring (at the age of 65) or who are retiring based on specific legal regulations are eligible to receive four monthly salaries. The compensation is accrued as earned over the period of service, taking into account the employee turnover rate. The risk Telekom Austria Group is exposed to is mainly the risk of development of salary increases and changes of interest rates.

Severance in Austria

Employees starting to work for Telekom Austria Group in Austria on or after 1 January 2003 are covered by a defined contribution plan. Telekom Austria Group paid Ps. 46,084 and Ps. 53,755 (1.53% of the salary) into this defined contribution plan (BAWAG Allianz Mitarbeitervorsorgekasse AG) in 2017 and 2018 , respectively.

Severance benefit obligations for employees hired before 1 January 2003, excluding civil servants, are covered by defined benefit plans. Upon termination by Telekom Austria Group or retirement, eligible employees receive severance payments equal to a multiple of their monthly compensation which comprises fixed compensation plus variable elements such as overtime or bonuses. Maximum severance is equal to a multiple of twelve times the eligible monthly compensation. In case of death, the heirs of eligible employees receive 50% of the severance benefits. Telekom Austria Group is exposed to the risk of development of salary increases and changes of interest rates.

b) The defined contribution plans (DCP)

Brazil

Claro makes contributions to the DCP through Embratel Social Security Fund—Telos. Contributions are computed based on the salaries of the employees, who decide on the percentage of their contributions to the plan (participants enrolled before October 31st, 2014 is from 3% to 8% and, for those subscribed after that date, the contribution is from 1% to 7% of their salaries). Claro contributes the same percentage as the employee, capped at 8% of the participant’s balance for the employees that are eligible to participate in this plan.

The unfunded liability represents Claro’s obligation for those participants that migrated from the DBP to the DCP. This liability is being paid over a term of 20 years as of January 1, 1999. Unpaid balances are adjusted monthly based on the yield of the asset portfolio at that date and is increased based on the General Price Index of Brazil plus 6 percentage points per year.

At December 31, 2017 and 2018, the balance of the DCP liability was Ps. 136,402 and Ps. 92,238, respectively.

For the years ended December 31, 2016, 2017 and 2018 the cost (income) of labor were Ps. (935), Ps. 374 and Ps. 2,377, respectively.

Europe

In Austria, pension benefits are generally provided by the social security system, for employees, and by the government, for civil servants. The contributions of 12.55% that A1 Telekom Austria Group made in 2017 and 2018 to the social security system and the government in Austria, amount to Ps. 1,309,157 and Ps.1,420,446, respectively. Contributions of the foreign subsidiaries into the respective systems range between 7% and 29% and amount to Ps. 453,641 and Ps. 518,607 in 2017 and 2018, respectively.

Additionally, Telekom Austria Group sponsors a defined contribution plan for employees of some of its Austrian subsidiaries. Telekom Austria Group’s contributions to this plan are based on a percentage of the compensation not exceeding 5%. The annual expenses for this plan amounted to Ps. 258,891, Ps. 256,507 and Ps. 272,453 in 2016, 2017 and 2018, respectively.

As of December 31, 2017 and 2018 the liability related to this defined contribution plan amounted to Ps. 120,892 and Ps. 116,244, respectively.

Other countries

For the rest of the countries where the Company operates and that do not have defined benefit plans or defined contribution plans, the Company makes contributions to the respective governmental social security agencies which are recognized in results of operations as they are incurred.

Long- term direct employee benefits

Balance at December 31, 2016

Applications

Balance at December 31, 2017

Effect of translation

Increase of the year

Payments

Reversals

Long-term direct employee benefits

Ps.

11,251,499

Ps.

795,581

Ps.

771,274

Ps.

(2,077,632

)

Ps.

(582,686

)

Ps.

10,158,036

Balance at December 31, 2017

Applications

Balance at December 31, 2018

Effect of translation

Increase of the year

Payments

Reversals

Long-term direct employee benefits

Ps.

10,158,036

Ps.

(493,795

)

Ps.

1,750,831

Ps.

(2,079,880

)

Ps.

(1,223,414

)

Ps.

8,111,778

In 2008, a comprehensive restructuring program was initiated in the segment Austria. The provision for restructuring includes future compensation of employees who will no longer provide services for Telekom Austria Group but who cannot be laid off due to their status as civil servants. These employment contracts are onerous contracts under IAS 37, as the unavoidable cost related to the contractual obligation exceeds the future economic benefit. The restructuring program also includes social plans for employees whose employments will be terminated in a socially responsible way. In 2009 and every year from 2011 to 2018, new social plans were initiated which provide for early retirement, special severance packages and golden handshake options. Due to their nature as termination benefits, these social plans are accounted for according to IAS 19.

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Financial Assets and Liabilities

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Financial Assets and Liabilities

18. Financial Assets and Liabilities

Set out below is the categorization of the financial instruments, excluding cash and cash equivalents, held by the Company as of December 31, 2017 and 2018:

	December 31, 2017
	Loans and Receivables		Fair value through profit or loss		Fair value through OCI
Financial Assets:
Equity investments at fair value through OCI and other short term investments	Ps.	12,438,019	Ps.	—	Ps.	46,682,657
Accounts receivable from subscribers, distributors, contractual assets and other		163,085,537		—		—
Related parties		868,230		—		—
Derivative financial instruments		—		8,037,384		—
Total	Ps.	176,391,786	Ps.	8,037,384	Ps.	46,682,657
Financial Liabilities:
Debt	Ps.	697,884,899	Ps.	—	Ps.	—
Accounts payable		212,673,407		—		—
Related parties		2,540,412		—		—
Derivative financial instruments		—		14,359,460		—
Total	Ps.	913,098,718	Ps.	14,359,460	Ps.	—

	December 31, 2018
	Loans and Receivables		Fair value through profit or loss		Fair value through OCI
Financial Assets:
Equity investments at fair value through OCI and other short term investments	Ps.	9,987,851	Ps.	—	Ps.	39,028,083
Accounts receivable from subscribers, distributors, contractual assets and other		185,202,494		—		—
Related parties		1,263,605		—		—
Derivative financial instruments		—		5,287,548		—
Total	Ps.	196,453,950	Ps.	5,287,548	Ps.	39,028,083
Financial Liabilities:
Debt	Ps.	638,922,453	Ps.	—	Ps.	—
Accounts payable		221,957,267		—		—
Related parties		2,974,213		—		—
Derivative financial instruments		—		17,107,579		—
Total	Ps.	863,853,933	Ps.	17,107,579	Ps.	—

Fair value hierarchy

The Company’s valuation techniques used to determine and disclose the fair value of its financial instruments are based on the following hierarchy:

Level 1: Quoted prices (unadjusted) in active markets for identical assets or liabilities;

Level 2: Variables other than quoted prices in Level 1 that are observable for the asset or liability, either directly (prices) or indirectly (derived from prices); and

Level 3: Variables used for the asset or liability that are not based on any observable market data (non-observable variables).

The fair value for the financial assets (excluding cash and cash equivalents) and financial liabilities shown in the consolidated statements of financial position at December 31, 2017 and 2018 is as follows:

	Measurement of fair value at December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Equity investments at fair value through OCI and other short-term investments	Ps.	46,682,657	Ps.	12,438,019	Ps.	—	Ps.	59,120,676
Derivative financial instruments		—		8,037,384		—		8,037,384
Pension plan assets		218,518,358		9,039,270		130,976		227,688,604
Total	Ps.	265,201,015	Ps.	29,514,673	Ps.	130,976	Ps.	294,846,664
Liabilities:
Debt	Ps.	691,769,785	Ps.	63,147,153	Ps.	—	Ps.	754,916,938
Derivative financial instruments		—		14,359,460		—		14,359,460
Total	Ps.	691,769,785	Ps.	77,506,613	Ps.	—	Ps.	769,276,398

	Measurement of fair value at December 31, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Equity investments at fair value through OCI and other short-term investments	Ps.	39,028,083	Ps.	9,987,851	Ps.	—	Ps.	49,015,934
Derivative financial instruments		—		5,287,548		—		5,287,548
Pension plan assets		186,557,731		17,096,344		17,047		203,671,122
Total	Ps.	225,585,814	Ps.	32,371,743	Ps.	17,047	Ps.	257,974,604
Liabilities:
Debt	Ps.	594,713,342	Ps.	99,723,251	Ps.	—	Ps.	694,436,593
Derivative financial instruments				17,107,579		—		17,107,579
Total	Ps.	594,713,342	Ps.	116,830,830	Ps.	—	Ps.	711,544,172

Fair value of derivative financial instruments is valued using valuation techniques with market observable inputs. To determine its Level 2 fair value, the Company applies different valuation techniques including forward pricing and swaps models, using present value calculations. The models incorporate various inputs including credit quality of counterparties, foreign exchange spot and forward rates and interest rate curves. Fair value of debt Level 2 has been determined using a model based on present value calculation incorporating credit quality of AMX. The Company’s investment in equity investments at fair value, specifically the investment in KPN, is valued using the quoted prices (unadjusted) in active markets for identical assets. The net realized gain related to derivative financial instruments for the years ended December 31, 2017 and 2018 was Ps. 1,515,668 and Ps. 5,286,290, respectively.

For the years ended December 31, 2016, 2017 and 2018, no transfers were made between Level 1 and Level 2 fair value measurement hierarchies.

Changes in liabilities arising from financing activities

	At January 1, 2017		Cash flow			Foreign currency exchange and other			At December 31, 2017
Total liabilities from financing activities	Ps.	707,801,403	Ps.	(27,433,489	)	Ps.	17,516,985		Ps.	697,884,899
	At January 1, 2018		Cash flow			Foreign currency exchange and other			At December 31, 2018
Total liabilities from financing activities	Ps.	697,884,899	Ps.	(34,050,923	)	Ps.	(24,911,523	)	Ps.	638,922,453

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Shareholders' Equity

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Shareholders' Equity

19. Shareholders’ Equity

a) Pursuant to the Company’s bylaws, the capital stock of the Company consists of a minimum fixed portion of Ps. $270,049 (nominal amount), represented by a total of 71,063,212,170 shares (including treasury shares available for placement in accordance with the provisions of the Ley del Mercado de Valores), of which (i) 20,601,632,660 are “AA” shares (full voting rights); (ii) 558,677,704 are “A” shares (full voting rights); and (iii) 49,902,901,806 are “L” shares (limited voting rights).

b) As of December 31, 2018 and 2017, the Company’s capital structure was represented by 66,034,792,526 (20,601,632,660 “AA” shares, 546,112,938 “A” shares and 44,887,046,928 “L” shares), and 66,069,035,539 (20,601,632,660 “AA” shares, 566,661,526 “A” shares and 44,900,741,353 “L” shares), respectively, not including treasury shares.

c) As of December 31, 2018 and 2017, the Company’s treasury held for placement in accordance with the provisions of the Ley del Mercado de Valores and the Disposiciones de carácter general aplicables a las emisoras de valores y a otros participantes en el Mercado de valores issued by the Comisión Nacional Bancaria y de Valores, a total amount of 5,028,419,644 shares (5,028,399,396 “L” shares and 20,248 “A” shares); and 29,420,688,657 shares (29,419,120,359 “L” shares and 1,568,298 “A” shares), respectively, all acquired pursuant to the Company’s share repurchase program.

d) The holders of “AA” and “A” shares are entitled to full voting rights. The holders of “L” shares may only vote in limited circumstances, and they are only entitled to appoint two members of the Board of Directors and their respective alternates. The matters in which “L” shares holders are entitled to vote are the following: extension of the Company´s corporate life, dissolution of the Company, change of Company’s corporate purpose, change of nationality of the Company, transformation of the Company, a merger with another company, any transaction representing 20% or more of the Company’s consolidated assets, as well as the cancellation of the inscription of the shares issued by the Company at the Registro Nacional de Valores and any other foreign stock exchanges where they may be registered, except for quotation systems or other markets not organized as stock exchanges. Within their respective series, all shares confer the same rights to their holders.

The Company’s bylaws contain restrictions and limitations related to the subscription and acquisition of “AA” shares by non-Mexican investors.

e) Pursuant to the Company’s bylaws, “AA” shares must at all times represent no less than 20% and no more than 51% of the Company’s capital stock, and they shall also represent at all times, no less than 51% of the common shares (entitled to full voting rights, represented by “AA” and “A” shares) representing said capital stock.

“A” shares, which may be freely subscribed, must not represent more than 19.6% of capital stock and must not exceed 49% of the common shares representing such capital. Common shares (entitled to full voting rights, represented by “AA” and “A” shares), must represent no more than 51% of the Company’s capital stock.

Lastly, “L” shares which have limited voting rights and may be freely subscribed may not exceed, along with “A” shares, 80% of the Company’s capital stock. For purposes of determining these restrictions, the percentages mentioned above refer only to the number of the Company’s shares outstanding.

Dividends

On April 16, 2018, the Company’s shareholders approved, among other resolutions, the payment of a dividend of Ps. $0.32 (thirty-two peso cents) per share to each of the shares series of its capital stock “AA”, “A” and “L”. Such dividend was paid in two installments of Ps. $0.16 (sixteen peso cents) each, on July 16 and November 12, 2018 respectively.

On April 5, 2017, the Company’s shareholders approved, among other resolutions, the payment of a dividend of Ps. $0.30 (thirty peso cents) per share to each of the shares series of its capital stock “AA”, “A” and “L”, such dividend was payable, at each share holders’ election, in cash, “L” series shares or a combination thereof, in two installments of Ps. $0.15 (fifteen peso cents) each, on July 17 and November 13, 2017 respectively. As a result of the shareholders elections, on July 17, 2017 and November 13, 2017, AMX placed into circulation 325,264,125 and 16,905,414 series “L” shares, respectively.

Legal Reserve

According to the Ley General de Sociedades Mercantiles, companies must allocate from the net profit of each year, at least 5% to increase the legal reserve until it reaches 20% of its capital stock. This reserve may not be distributed to shareholders during the existence of the Company, except as a stock dividend. As of December 31, 2018 and 2017, the legal reserve amounted Ps. 358,440.

Restrictions on Certain Transactions

Pursuant to the Company’s bylaws any transfer of more than 10% of the full voting shares (“A” shares and “AA” shares), effected in one or more transactions by any person or group of persons acting in concert, requires prior approval by our Board of Directors. If the Board of Directors denies such approval, however, the Company bylaws require it to designate an alternate transferee, who must pay market price for the shares as quoted on the Bolsa Mexicana de Valores, S.A.B. de C.V.

Payment of Dividends

Dividends, either in cash or in kind, paid with respect to the “A” Shares, “L” Shares, “A” Share ADSs or “L” Share ADSs will generally be subject to a 10% Mexican withholding tax (provided that no Mexican withholding tax will apply to distributions of net taxable profits generated before 2015). Nonresident holders could be subject to a lower tax rate, to the extent that they are eligible for benefits under an income tax treaty to which Mexico is a party.

Earnings per Share

The following table shows the computation of the basic and diluted earnings per share:

	For the years ended December 31,
	2016		2017		2018
Net profit for the period attributable to equity holders of the parent	Ps.	8,649,427	Ps.	29,325,921	Ps.	52,566,197
Weighted average shares (in millions)		65,693		65,909		66,055
Earnings per share attributable to equity holders of the parent		0.13		0.44		0.79

Subordinated Perpetual Fixed Rate Bond

On January 3, 2018, the Company decided to call and redeem the Telekom Austria subordinated perpetual Fixed Rate Bond (hybrid bond) amounting to 600 million of Euros, according to the terms and conditions of the bond, at its nominal value plus all interest on February 1, 2018, the first call date. The Company paid an amount of Ps 13,440,120.

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Components of other comprehensive (loss) income

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Components of other comprehensive (loss) income

20. Components of other comprehensive (loss) income

The movement on the components of the other comprehensive (loss) income for the years ended December 31, 2016, 2017 and 2018 is as follows:

	For the years ended December 31,
	2016			2017			2018
Controlling interest:
Valuation of the derivative financial instruments, net of deferred taxes	Ps.	48,496		Ps.	12,292		Ps.	—
Unrealized (loss) gain on equity investments at fair value, net of deferred taxes		(6,673,731	)		622,424			(3,765,688	)
Translation effect of foreign entities		104,178,880			(21,683,333	)		(61,223,458	)
Remeasurement of defined benefit plan, net of deferred taxes		14,771,770			(7,075,606	)		652,722
Non-controlling interest of the items above		3,322,090			3,402,973			(2,986,018	)
Other comprehensive (loss) income	Ps.	115,647,505		Ps.	(24,721,250	)	Ps.	(67,322,442	)

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Valuation of derivatives, interest cost from labor obligations and other financial items, net

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Valuation of derivatives, interest cost from labor obligations and other financial items, net

21. Valuation of derivatives, interest cost from labor obligations and other financial items, net

For the years ended December 31, 2016, 2017 and 2018, valuation of derivatives and other financial items are as follows:

	For the years ended December 31,
	2016			2017			2018
Controlling interest:
(Loss) gain in valuation of derivatives, net	Ps.	(9,622,233	)	Ps.	8,192,567		Ps.	(4,686,407	)
Capitalized interest expense (Note 10 d)		2,861,307			2,875,034			2,020,288
Commissions		(2,034,972	)		(1,263,701	)		(1,901,473	)
Interest cost of labor obligations (Note 17)		(9,178,513	)		(8,722,611	)		(9,968,526	)
Interest expense on taxes		(245,922	)		(1,503,981	)		(555,921	)
Dividend received (Note 4)		5,740,092			2,385,559			2,605,333
Gain on net monetary positions (Note 2i, c)		—			—			4,429,145
Other financial cost		(3,745,600	)		(3,906,627	)		(2,118,755	)
Total	Ps.	(16,225,841	)	Ps.	(1,943,760	)	Ps.	(10,176,316	)

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Segments

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Segments

22. Segments

América Móvil operates in different countries. As mentioned in Note 1, the Company has operations in Mexico, Guatemala, Nicaragua, Ecuador, El Salvador, Costa Rica, Brazil, Argentina, Colombia, United States, Honduras, Chile, Peru, Paraguay, Uruguay, Dominican Republic, Puerto Rico, Panama, Austria, Croatia, Bulgaria, Belarus, Macedonian, Serbia and Slovenia. The accounting policies for the segments are the same as those described in Note 2.

The Chief Executive Officer, who is the Chief Operating Decision Maker (“CODM”), analyzes the financial and operating information by operating segment. All operating segments that (i) represent more than 10% of consolidated revenues, (ii) more than the absolute amount of its reported 10% of profits before income tax or (iii) more than 10% of consolidated assets, are presented separately.

The Company presents the following reportable segments for the purposes of its consolidated financial statements: Mexico (includes Telcel and Corporate operations and assets), Telmex (Mexico), Brazil, Southern Cone (includes Argentina, Chile, Paraguay and Uruguay), Central America (includes Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica and Panama), U.S.A. (excludes Puerto Rico), Caribbean (includes Dominican Republic and Puerto Rico), and Europe (includes Austria, Bulgaria, Croatia, Belarus, Slovenia, Macedonia and Serbia).

The segment Southern Cone comprises mobile communication services in Argentina as well as Chile, Paraguay and Uruguay. In 2018, hyperinflation accounting in accordance with IAS 29 was initially applied to Argentina, which results in the restatement of non-monetary assets, liabilities and all items of the statements of comprehensive income for the change in a general price index and the translation of these items applying the year-end exchange rate. In accordance with IFRS comparative amounts for 2016 and 2017 were not restated.

The Company considers that the quantitative and qualitative aspects of any aggregated operating segments (that is, Central America and Caribbean reportable segments) are similar in nature for all periods presented. In evaluating the appropriateness of aggregating operating segments, the key indicators considered included but were not limited to: (i) the similarity of key financial statements measures and trends, (ii) all entities provide telecommunications services, (iii) similarities of customer base and services, (iv) the methods to distribute services are the same, based on telephone plant in both cases, wireless and fixed lines, (v) similarities of governments and regulatory entities that oversee the activities and services of telecom companies, (vi) inflation trends, and (vii) currency trends.

	Mexico		Telmex		Brazil			Southern Cone			Colombia			Andean		Central America		U.S.A.		Caribbean		Europe			Eliminations			Consolidated total
At December 31 2016 (in Ps.):
External revenues		187,127,903		93,343,612		193,796,237			71,553,356			67,330,768			55,825,972		42,131,666		140,856,365		36,467,781		86,978,828			—			975,412,488
Intersegment revenues		16,438,858		8,872,248		3,560,388			776,719			257,767			304,834		289,465		—		30,210		—			(30,530,489	)		—
Total revenues		203,566,761		102,215,860		197,356,625			72,330,075			67,588,535			56,130,806		42,421,131		140,856,365		36,497,991		86,978,828			(30,530,489	)		975,412,488
Depreciation and amortization		16,451,496		17,150,013		47,170,935			9,739,634			11,283,749			7,764,474		10,474,681		1,073,623		5,225,498		22,525,050			(333,232	)		148,525,921
Operating income		48,219,505		12,275,892		6,325,323			8,317,053			11,209,959			6,086,638		3,830,974		1,220,601		6,143,183		5,388,595			592,587			109,610,310
Interest income		28,659,372		303,915		3,747,684			2,649,539			104,304			944,945		462,779		239,797		691,132		286,784			(33,897,656	)		4,192,595
Interest expense		32,004,944		1,135,552		22,970,335			5,049,457			1,079,989			1,147,380		411,597		—		143,322		2,953,033			(33,033,597	)		33,862,012
Income tax		2,502,242		921,803		(4,294,040	)		2,021,090			4,456,750			1,768,066		3,291,776		767,295		2,542,080		(2,578,206	)		—			11,398,856
Equity interest in net income  (loss) of associated companies		67,472		116,368		(270	)		(23,319	)		—			—		171		—		—		29,528			—			189,950
Net profit (loss) attributable to equity holders of the parent		378,150		902,282		(10,357,493	)		3,765,015			4,022,633			3,621,863		538,890		987,790		3,318,960		7,065,769			(5,594,432	)		8,649,427
Assets by segment		1,070,598,204		161,133,722		461,831,754			140,617,162			103,361,235			113,839,981		80,832,029		42,812,349		93,941,695		227,288,156			(981,214,013	)		1,515,042,274
Plant, property and equipment, net		64,893,242		112,220,236		203,270,555			67,023,143			59,690,886			37,716,772		41,808,573		1,949,166		33,854,428		78,763,065			—			701,190,066
Goodwill		27,186,328		213,926		26,106,622			3,006,448			14,659,891			5,948,335		5,652,268		3,464,217		14,186,723		52,207,877			—			152,632,635
Trademarks, net		615,318		307,881		366,727			—			194			—		—		788,228		284,665		10,203,880			—			12,566,893
Licenses and rights, net		5,887,092		42,867		41,496,209			8,760,860			4,603,793			12,882,210		3,993,120		—		7,694,798		30,670,315			—			116,031,264
Investment in associated companies		7,605,220		2,218,824		699			81,284			470			—		17,390		—		—		1,072,778			(7,393,181	)		3,603,484
Liabilities by segments		798,044,609		117,663,161		349,915,118			124,149,687			40,811,337			52,949,608		38,095,161		41,369,767		44,790,656		121,928,202			(485,698,799	)		1,244,018,507
At December 31, 2017 (in Ps.):
External revenues		190,022,612		89,731,238		210,536,673			81,092,885			72,435,460			56,393,595		44,094,835		148,589,487		35,092,578		93,644,172			—			1,021,633,535
Intersegment revenues		16,748,428		8,753,525		4,785,601			1,250,983			304,555			177,856		187,086		44		122,656		—			(32,330,734	)		—
Total revenues		206,771,040		98,484,763		215,322,274			82,343,868			72,740,015			56,571,451		44,281,921		148,589,531		35,215,234		93,644,172			(32,330,734	)		1,021,633,535
Depreciation and amortization		17,030,251		18,902,238		51,486,652			10,639,591			12,373,790			8,328,705		9,668,439		1,594,727		5,349,757		25,222,962			(422,170	)		160,174,942
Operating income (loss)		50,666,028		7,921,524		11,601,369			11,676,427			(4,704,165	)		5,650,477		5,252,401		2,915,123		4,752,168		4,523,857			(111,906	)		100,143,303
Interest income		30,083,437		619,748		3,792,242			2,884,613			211,521			1,793,974		1,064,992		394,196		1,111,980		307,021			(39,338,076	)		2,925,648
Interest expense		32,185,868		1,028,593		23,578,083			4,637,989			1,955,688			1,573,929		485,684		—		377,727		2,035,716			(37,558,496	)		30,300,781
Income tax		18,142,482		387,145		(2,991,377	)		3,535,302			(1,874,594	)		1,806,085		2,025,618		1,803,555		3,529,253		(1,417,358	)		(4,600	)		24,941,511
Equity interest in net income (loss) of associated companies		99,044		16,564		(232	)		(9,801	)		—			—		—		—		—		(14,190	)		—			91,385
Net profit (loss) attributable to equity holders of the parent		26,321,442		184,387		(6,617,381	)		4,421,938			(6,209,530	)		1,595,382		3,713,301		1,793,875		1,262,073		5,656,132			(2,795,698	)		29,325,921
Assets by segment		1,033,036,406		170,402,561		428,281,963			133,136,177			108,362,023			113,478,626		81,529,691		40,761,830		88,672,466		203,858,243			(915,308,134	)		1,486,211,852
Plant, property and equipment, net		59,137,555		109,713,770		187,459,628			69,006,093			57,060,931			35,930,966		39,050,481		1,693,642		32,173,524		85,116,608			—			676,343,198
Goodwill		27,102,384		213,926		24,708,739			3,073,444			13,981,033			6,113,495		5,597,990		3,341,956		14,186,723		53,143,542			—			151,463,232
Trademarks, net		406,723		274,786		246,557			—			—			—		—		631,024		262,641		8,116,076			—			9,937,807
Licenses and rights, net		11,457,720		13,175		35,662,305			8,885,086			4,197,498			11,295,202		3,376,106		—		7,276,039		31,141,255			—			113,304,386
Investment in associated companies		469,662		546,872		640			63,110			451			—		16,999		—		—		806,950			1,830,488			3,735,172
Liabilities by segments		794,598,013		133,428,178		322,620,030			119,123,646			54,756,152			48,656,628		35,501,900		38,249,957		43,978,410		119,240,533			(484,575,112	)		1,225,578,335

At December 31, 2018 (in Ps.):
External revenues	207,610,244		86,339,289		188,712,666		89,149,978		75,460,428	55,633,192	44,883,585	153,266,315	36,435,541	100,716,443		—		1,038,207,681
Intersegment revenues	16,946,543		9,741,908		4,593,760		13,200,358		344,517	154,082	149,445	—	204,294	—		(45,334,907	)	—
Total revenues	224,556,787		96,081,197		193,306,426		102,350,336		75,804,945	55,787,274	45,033,030	153,266,315	36,639,835	100,716,443		(45,334,907	)	1,038,207,681
Depreciation and amortization	17,619,342		18,358,248		42,857,751		13,526,361		13,464,867	8,516,960	8,940,655	1,545,395	5,036,831	26,838,972		(992,802	)	155,712,580
Operating income (loss)	57,450,599		8,085,764		23,494,903		16,975,797		14,388,552	5,003,915	4,867,763	2,665,270	5,811,846	4,731,562		(3,918,800	)	139,557,171
Interest income	26,578,280		420,380		11,303,888		2,251,474		1,013,839	1,666,879	1,566,086	559,548	1,458,874	122,133		(36,295,212	)	10,646,169
Interest expense	32,526,258		1,153,913		20,377,191		4,338,941		2,913,881	1,719,663	509,081	—	561,867	1,973,431		(34,302,793	)	31,771,433
Income tax	28,842,505		643,377		4,026,444		1,390,039		2,251,877	2,498,666	2,533,600	810,898	2,774,204	707,093		(1,624	)	46,477,079
Equity interest in net income (loss) of associated companies	(5,962	)	44,965		(152	)	(20,871	)	—	—	—	—	—	(17,713	)	—		267
Net profit (loss) attributable to equity holders of the parent	23,185,029		(2,201,572	)	3,530,653		6,065,703		9,165,801	1,730,933	2,821,733	2,820,505	3,644,697	3,809,694		(2,006,979	)	52,566,197
Assets by segment	970,564,314		174,461,398		390,791,480		127,946,573		111,975,598	96,347,779	81,640,157	38,814,907	102,531,547	186,135,358		(851,985,719	)	1,429,223,392
Plant, property and equipment, net	56,056,634		103,737,293		173,197,708		62,988,635		51,422,548	35,800,477	37,146,601	1,356,237	38,011,242	80,421,642		(138,297	)	640,000,720
Goodwill	27,104,632		215,381		21,388,124		2,796,759		12,770,380	5,242,365	5,466,871	3,328,533	14,186,723	53,066,729		—		145,566,497
Trademarks, net	227,774		243,556		124,910		—		—	—	—	507,033	249,984	3,313,948		—		4,667,205
Licenses and rights, net	10,573,147		—		25,873,910		12,555,496		3,400,235	9,651,582	3,605,416	—	10,294,336	27,344,273		—		103,298,395
Investment in associated companies	5,621,661		563,667		543		20,697		412	—	24,262	—	—	748,674		(3,847,209	)	3,132,707
Liabilities by segments	748,965,728		136,993,838		298,308,084		94,550,901		56,211,438	50,064,761	28,592,953	35,552,678	58,716,154	117,214,746		(441,820,311	)	1,183,350,970

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Recently Issued Accounting Standards

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Recently Issued Accounting Standards

23. Recently Issued Accounting Standards

New standards, amendments and interpretations not yet effective

The estimated impact and evaluation of the recently issued accounting standards not yet in effect as of December 31, 2018 are as follow:

IFRS 16, Leases

In January 2016, the IASB issued the new accounting standard, IFRS 16 Leases. The fundamental changes in this new standard affect the lessees’ recognition of leases in the financial statements. Generally, all leases have to be recognized based on the “right of use approach”.

IFRS 16 replaces IAS 17 Leases, IFRIC 4 Determining whether an Arrangement contains a Lease, SIC-15 Operating Leases- Incentives and SIC-27 Evaluating the Substance of Transactions Involving the Legal Form of a Lease. IFRS 16 sets out the principles for the recognition, measurement, presentation and disclosure of leases and requires lessees to account for all leases under a single on-balance sheet model similar to the accounting for finance leases under IAS 17. The standard includes two recognition exemptions for lessees – leases of ’low-value’ assets (e.g., personal computers) and short-term leases (i.e., leases with a lease term of 12 months or less). At the commencement date of a lease, a lessee will recognize a liability to make lease payments (i.e., the lease liability) and an asset representing the right to use the underlying asset during the lease term (i.e., the right-of-use asset). Lessees will be required to separately recognize the interest expense on the lease liability and the depreciation expense on the right-of-use asset.

Lessees will be also required to remeasure the lease liability upon the occurrence of certain events (e.g., a change in the lease term, a change in future lease payments resulting from a change in an index or rate used to determine those payments). The lessee will generally recognize the amount of the remeasurement of the lease liability as an adjustment to the right-of-use asset.

Lessor accounting under IFRS 16 is substantially unchanged from today’s accounting under IAS 17. Lessors will continue to classify all leases using the same classification principle as in IAS 17 and distinguish between two types of leases: operating and finance leases.

IFRS 16, which is effective for annual periods beginning on January 1, 2019, requires lessees and lessors to make more extensive disclosures than under IAS 17.

Transition to IFRS 16

The Company will adopt the IFRS 16 using the modified retrospectively method with the date of initial applications on January 1, 2019. Moreover, the Company will apply the new requirements regarding IFRS 16 to all contracts identified as leases under the current accounting standard and reassessed all services, in order to identify lease components or an implicit accounting lease within these contracts.

The Company will elect to use the exemptions applicable to the standard on lease contracts for which the lease terms ends within 12 months as of the date of initial application, and lease contracts for which the underlying asset is of low value. The Company has leases of certain office equipment (i.e., personal computers, printing and photocopying machines, mainly) that are considered low value assets.

The Company identified a significant number of lease assets such as towers, physical facilities (office buildings, stores and sites, mainly), circuits, among others. The implementation of IFRS 16 required a significant effort due to the fact of the need to make certain estimates, such as the leases term, based on the non-cancelable period and the periods covered by options to extend the lease. AMX extended the lease terms beyond the non-cancelable period only when it was reasonably certain to extend it. The reasonability of the extension is affected on several factors, such as regulation, business model, and geographical business strategies.

AMX expects that the changes in the implementation of IFRS 16 will have a significant impact on its financial statements from the date of adoption. The Company expects that the opening balances at the date of initial application will increase in right of use assets and lease liabilities between Ps.113,000,000 and Ps.132,000,000 without a material impact in equity.

Estimated initial impact are based on the assessment conducted to date and could have a difference because of the lease borrowing rate and the volume of contracts considered in the implementation process. The new accounting policies will not be final until the Company presents its first financial statements subsequent to the effective date of IFRS 16.

IFRS 17 Insurance Contracts

In May 2017, the IASB issued IFRS 17 Insurance Contracts (IFRS 17), a comprehensive new accounting standard for insurance contracts covering recognition and measurement, presentation and disclosure. Once effective, IFRS 17 will replace IFRS 4 Insurance Contracts (IFRS 4) that was issued in 2005. IFRS 17 applies to all types of insurance contracts (i.e., life, non-life, direct insurance and re-insurance), regardless of the type of entities that issue them, as well as to certain guarantees and financial instruments with discretionary participation features. A few scope exceptions will apply. The overall objective of IFRS 17 is to provide an accounting model for insurance contracts that is more useful and consistent for insurers. In contrast to the requirements in IFRS 4, which are largely based on grandfathering previous local accounting policies, IFRS 17 provides a comprehensive model for insurance contracts, covering all relevant accounting aspects. The core of IFRS 17 is the general model, supplemented by:

• A specific adaptation for contracts with direct participation features (the variable fee approach)

• A simplified approach (the premium allocation approach) mainly for short-duration contracts

IFRS 17 is effective for reporting periods beginning on or after 1 January 2021, with comparative figures required.

Early application is permitted, provided the entity also applies IFRS 9 and IFRS 15 on or before the date it first applies IFRS 17.

The company is evaluating the effects, however, it does not expect the adoption of this standard to have a significant impact.

IFRIC Interpretation 23 Uncertainty over Income Tax Treatment

The Interpretation addresses the accounting for income taxes when tax treatments involve uncertainty that affects the application of IAS 12 and does not apply to taxes or levies outside the scope of IAS 12, nor does it specifically include requirements relating to interest and penalties associated with uncertain tax treatments.

The Interpretation specifically addresses the following:

• Whether an entity considers uncertain tax treatments separately

• The assumptions an entity makes about the examination of tax treatments by taxation authorities

• How an entity determines taxable profit (tax loss), tax bases, unused tax losses, unused tax credits and tax rates

• How an entity considers changes in facts and circumstances

An entity has to determine whether to consider each uncertain tax treatment separately or together with one or more other uncertain tax treatments. The approach that better predicts the resolution of the uncertainty should be followed. The interpretation is effective for annual reporting periods beginning on or after 1 January 2019, but certain transition reliefs are available. The Company will apply the interpretation from its effective date. The Company will establish the processes and procedures to obtain the necessary information to apply the Interpretation in a timely manner.

The company estimates that the adoption of this standard will not have a significant impact on its consolidated financial statements.

Amendments to IFRS 9: Prepayment Features with Negative Compensation

Under IFRS 9, a debt instrument can be measured at amortized cost or at fair value through other comprehensive income, provided that the contractual cash flows are ‘solely payments of principal and interest on the principal amount outstanding’ (the SPPI criterion) and the instrument is held within the appropriate business model for that classification. The amendments to IFRS 9 clarify that a financial asset passes the SPPI criterion regardless of the event or circumstance that causes the early termination of the contract and irrespective of which party pays or receives reasonable compensation for the early termination of the contract.

The amendments should be applied retrospectively and are effective from 1 January 2019, with earlier application permitted. These amendments have no impact on the consolidated financial statements of the Company.

Amendments to IFRS 10 and IAS 28: Sale or Contribution of Assets between an Investor and its Associate or Joint Venture

The amendments address the conflict between IFRS 10 and IAS 28 in dealing with the loss of control of a subsidiary that is sold or contributed to an associate or joint venture. The amendments clarify that the gain or loss resulting from the sale or contribution of assets that constitute a business, as defined in IFRS 3, between an investor and its associate or joint venture, is recognized in full. Any gain or loss resulting from the sale or contribution of assets that do not constitute a business, however, is recognized only to the extent of unrelated investors’ interests in the associate or joint venture. The IASB has deferred the effective date of these amendments indefinitely, but an entity that early adopts the amendments must apply them prospectively. The Company will apply these amendments when they become effective.

Amendments to IAS 19: Plan Amendment, Curtailment or Settlement

The amendments to IAS 19 address the accounting when a plan amendment, curtailment or settlement occurs during a reporting period. The amendments specify that when a plan amendment, curtailment or settlement occurs during the annual reporting period, an entity is required to:

• Determine current service cost for the remainder of the period after the plan amendment, curtailment or settlement, using the actuarial assumptions used to remeasure the net defined benefit liability (asset) reflecting the benefits offered under the plan and the plan assets after that event.

• Determine net interest for the remainder of the period after the plan amendment, curtailment or settlement using: the net defined benefit liability (asset) reflecting the benefits offered under the plan and the plan assets after that event; and the discount rate used to remeasure that net defined benefit liability (asset).

The amendments also clarify that an entity first determines any past service cost, or a gain or loss on settlement, without considering the effect of the asset ceiling. This amount is recognized in profit or loss.

An entity then determines the effect of the asset ceiling after the plan amendment, curtailment or settlement. Any change in that effect, excluding amounts included in the net interest, is recognized in other comprehensive income.

The amendments apply to plan amendments, curtailments, or settlements occurring on or after the beginning of the first annual reporting period that begins on or after 1 January 2019, with early application permitted. These amendments will apply only to any future plan amendments, curtailments, or settlements of the Company.

Amendments to IAS 28: Long-term interests in associates and joint ventures

The amendments clarify that an entity applies IFRS 9 to long-term interests in an associate or joint venture to which the equity method is not applied but that, in substance, form part of the net investment in the associate or joint venture (long-term interests). This clarification is relevant because it implies that the expected credit loss model in IFRS 9 applies to such long-term interests.

The amendments also clarified that, in applying IFRS 9, an entity does not take account of any losses of the associate or joint venture, or any impairment losses on the net investment, recognized as adjustments to the net investment in the associate or joint venture that arise from applying IAS 28 Investments in Associates and Joint Ventures.

The amendments should be applied retrospectively and are effective from 1 January 2019, with early application permitted. Since the Company does not have such long-term interests in its associate and joint venture, the amendments will not have an impact on its consolidated financial statements.

Annual Improvements 2015-2017 Cycle (issued in December 2017)

These improvements include:

• IFRS 3 Business Combinations

The amendments clarify that, when an entity obtains control of a business that is a joint operation, it applies the requirements for a business combination achieved in stages, including remeasuring previously held interests in the assets and liabilities of the joint operation at fair value. In doing so, the acquirer remeasures its entire previously held interest in the joint operation.

An entity applies those amendments to business combinations for which the acquisition date is on or after the beginning of the first annual reporting period beginning on or after 1 January 2019, with early application permitted.

These amendments will apply on future business combinations of the Company.

• IFRS 11 Joint Arrangements

A party that participates in, but does not have joint control of, a joint operation might obtain joint control of the joint operation in which the activity of the joint operation constitutes a business as defined in IFRS 3. The amendments clarify that the previously held interests in that joint operation are not remeasured.

An entity applies those amendments to transactions in which it obtains joint control on or after the beginning of the first annual reporting period beginning on or after 1 January 2019, with early application permitted. These amendments are currently not applicable to the Company but may apply to future transactions.

• IAS 12 Income Taxes

The amendments clarify that the income tax consequences of dividends are linked more directly to past transactions or events that generated distributable profits than to distributions to owners. Therefore, an entity recognizes the income tax consequences of dividends in profit or loss, other comprehensive income or equity according to where the entity originally recognized those past transactions or events.

An entity applies those amendments for annual reporting periods beginning on or after 1 January 2019, with early application is permitted. When an entity first applies those amendments, it applies them to the income tax consequences of dividends recognized on or after the beginning of the earliest comparative period. Since the Company´s current practice is in line with these amendments, the Company does not expect any effect on its consolidated financial statements.

• IAS 23 Borrowing Costs

The amendments clarify that an entity treats as part of general borrowings any borrowing originally made to develop a qualifying asset when substantially all of the activities necessary to prepare that asset for its intended use or sale are complete.

An entity applies those amendments to borrowing costs incurred on or after the beginning of the annual reporting period in which the entity first applies those amendments. An entity applies those amendments for annual reporting periods beginning on or after 1 January 2019, with early application permitted. Since the Company´s current practice is in line with these amendments, the Company does not expect any effect on its consolidated financial statements.

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Subsequent Events

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Subsequent Events

24. Subsequent Events

(a) On January 24, 2019, the Company acquired from Telefónica S.A. and certain of its affiliates (“Telefónica”), 100% of Telefónica Móviles Guatemala, S.A. (“Telefónica Guatemala”), and has entered into an agreement to acquire 99.3% of Telefónica Móviles El Salvador, S.A. de C.V. (“Telefónica El Salvador”). The Telefónica Guatemala acquisition has been completed on this date. The completion of the acquisition of Telefónica El Salvador is subject to certain customary closing conditions, including regulatory approval. The purchase price paid for Telefónica Guatemala was Ps. 6,326,068 (US$333,000 ). The agreed upon purchase price for Telefónica El Salvador is Ps. 5,984,118 (US$315,000). The acquired companies provide mobile and fixed telecommunications services, including voice, data and Pay TV in El Salvador and Guatemala.

(b) On March 18, 2019, the Company announced that it has entered into an agreement to acquire from NII Holdings, Inc. and certain of its affiliates (“NII”) and AI Brazil Holdings B.V. 100% of Nextel Telecomunicações Ltda. (“Nextel Brazil”).

The completion of the acquisition is subject to certain customary closing conditions, including regulatory approval from Agência Nacional de Telecomunicações — Anatel and Conselho Administrativo de Defesa Econômica — CADE. The transaction is also subject to the approval at a stockholders meeting of NII shareholders holding a majority of the outstanding shares of NII. The agreed purchase price for Nextel Brazil is Ps. 17,487,578 (US$905,000) on a cash free / debt free basis.

Nextel Brazil provides nationwide mobile telecommunications services.

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Supplemental Guarantor Information

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Supplemental Guarantor Information

25. Supplemental Guarantor Information

Condensed Consolidating Financial Information

The following consolidating information presents condensed consolidating statements of financial position as of December 31, 2017 and 2018 and condensed consolidating statements of comprehensive income and cash flows for each of the three years in the period ended December 31, 2018 of the Company and Telcel (the “wholly-owned Guarantor Subsidiary”). The unconsolidated financial statements of América Móvil and Telcel reflect their investments in subsidiaries on the basis of the equity method. These unconsolidated entities are the Guarantors of most of América Móvil’s consolidated obligations. The guarantees of the Guarantor are full and unconditional.

The Company’s consolidating condensed financial information for the (i) Company; (ii) its wholly-owned guarantor subsidiary Telcel (on standalone basis), which is a wholly and unconditional guarantor under the Senior Notes; (iii) the combined non-guarantor subsidiaries; iv) eliminations and v) the Company’s consolidated financial statements are as follows:

Condensed consolidating statements of financial position

	As of December 31, 2017
	Parent		Wholly-owned Guarantor Subsidiary		Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Assets:
Cash and cash equivalents	Ps.	7,018,559	Ps.	3,553,352	Ps.	13,698,562		Ps.	—		Ps.	24,270,473
Equity investments at fair value through OCI and other short-term investments		10,303,535		—		48,817,141			—			59,120,676
Accounts receivable and derivative financial instruments		9,874,652		24,064,936		167,873,940			—			201,813,528
Related parties		208,240,067		957,704		503,895,549			(712,225,090	)		868,230
Inventories, net		264,649		16,700,837		21,844,079			—			38,809,565
Other current assets		17,805,747		922,245		(1,375,246	)		—			17,352,746
Property, plant and equipment, Net		1,996,721		24,287,904		650,058,573			—			676,343,198
Investments in associated companies		747,771,790		35,569,788		3,457,152			(783,063,558	)		3,735,172
Intangible assets and other non- current assets, net		4,104,268		73,557,904		386,236,092			—			463,898,264
Total assets	Ps.	1,007,379,988	Ps.	179,614,670	Ps.	1,794,505,842		Ps.	(1,495,288,648	)	Ps.	1,486,211,852
Liabilities:
Short-term debt and current portion of long-term debt	Ps.	34,345,398	Ps.	—	Ps.	17,400,443		Ps.	—		Ps.	51,745,841
Current liabilities		161,940,198		41,304,845		797,880,314			(639,534,701	)		361,590,656
Long-term debt		547,728,176		—		98,410,882			—			646,139,058
Other non-current liabilities		69,201,904		132,728,838		40,909,234			(76,737,196	)		166,102,780
Total liabilities	Ps.	813,215,676	Ps.	174,033,683	Ps.	954,600,873		Ps.	(716,271,897	)	Ps.	1,225,578,335
Equity attributable to equity holders of the parent		194,164,312		5,580,987		741,988,231			(747,569,218	)		194,164,312
Non-controlling interests		—		—		97,916,738			(31,447,533	)		66,469,205
Total equity		194,164,312		5,580,987		839,904,969			(779,016,751	)		260,633,517
Total liabilities and equity	Ps.	1,007,379,988	Ps.	179,614,670	Ps.	1,794,505,842		Ps.	(1,495,288,648	)	Ps.	1,486,211,852

Condensed consolidating statements of financial position

	As of December 31, 2018
	Parent		Wholly-owned Guarantor Subsidiary		Combined non-guarantor Subsidiaries		Eliminations			Consolidated Total
Assets:
Cash and cash equivalents	Ps.	8,335,101	Ps.	1,745,895	Ps.	11,578,966	Ps.	—		Ps.	21,659,962
Equity investments at fair value through OCI and other short-term investments		9,511,368		—		39,504,566		—			49,015,934
Accounts receivable and derivative financial instruments		31,462,176		35,671,582		154,380,710		—			221,514,468
Related parties		199,566,671		1,144,534		560,142,367		(759,589,967	)		1,263,605
Inventories, net		215,055		18,495,502		21,594,805		—			40,305,362
Other current assets		—		1,218,764		14,077,429		—			15,296,193
Property, plant and equipment, Net		1,340,358		23,192,546		615,467,816		—			640,000,720
Investments in associated companies		734,944,344		88,070,845		16,926,615		(836,809,097	)		3,132,707
Intangible assets and other non- current assets, net		4,113,902		26,176,381		406,744,158		—			437,034,441
Total assets	Ps.	989,488,975	Ps.	195,716,049	Ps.	1,840,417,432	Ps.	(1,596,399,064	)	Ps.	1,429,223,392
Liabilities:
Short-term debt and current portion of long-term debt	Ps.	52,827,411	Ps.	—	Ps.	43,403,223	Ps.	—		Ps.	96,230,634
Current liabilities		153,489,868		72,282,238		597,174,025		(452,085,876	)		370,860,255
Long-term debt		456,918,590		—		85,773,229		—			542,691,819
Other non-current liabilities		130,257,461		109,368,210		242,232,897		(308,290,306	)		173,568,262
Total liabilities	Ps.	793,493,330	Ps.	181,650,448	Ps.	968,583,374	Ps.	(760,376,182	)	Ps.	1,183,350,970
Equity attributable to equity holders of the parent		195,995,645		14,065,601		760,485,332		(774,550,933	)		195,995,645
Non-controlling interests		—		—		111,348,726		(61,471,949	)		49,876,777
Total equity		195,995,645		14,065,601		871,834,058		(836,022,882	)		245,872,422
Total liabilities and equity	Ps.	989,488,975	Ps.	195,716,049	Ps.	1,840,417,432	Ps.	(1,596,399,064	)	Ps.	1,429,223,392

Condensed consolidating statements of comprehensive income

For the year ended December 31, 2016

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Total revenues	Ps.	137,236,301		Ps.	173,714,225		Ps.	857,137,822		Ps.	(192,675,860	)	Ps.	975,412,488
Total cost and operating expenses		117,835,634			160,949,691			778,483,079			(191,466,226	)		865,802,178
Operating income		19,400,667			12,764,534			78,654,743			(1,209,634	)		109,610,310
Interest (expense) income, net		(12,331,095	)		97,314			(17,207,855	)		(227,781	)		(29,669,417	)
Foreign currency exchange (loss) gain, net		(46,625,392	)		(5,853,669	)		12,051,654			—			(40,427,407	)
Other financing cost, net		(10,475,673	)		(11,203,533	)		5,453,365			—			(16,225,841	)
Income tax		(7,712,179	)		1,139,631			17,971,404			—			11,398,856
Equity interest in net income of associated companies		50,968,741			(1,342,073	)		(6,677,059	)		(42,759,659	)		189,950
Net profit (loss) for year	Ps.	8,649,427		Ps.	(6,677,058	)	Ps.	54,303,444		Ps.	(44,197,074	)	Ps.	12,078,739
Distribution of the net profit (loss) to:
Equity owners of holding company		8,649,427			(6,677,058	)		50,049,280			(43,372,222	)		8,649,427
Non-controlling interest		—			—			4,254,164			(824,852	)		3,429,312
Net profit (loss)	Ps.	8,649,427		Ps.	(6,677,058	)	Ps.	54,303,444		Ps.	(44,197,074	)	Ps.	12,078,739
Other comprehensive income items:
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities		104,178,880			755,978			108,291,984			(105,728,134	)		107,498,708
Effect of fair value of derivatives, net of deferred taxes		48,496			—			30,206			(29,573	)		49,129
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect		14,771,770			(12,300	)		7,477,926			(7,463,997	)		14,773,399
Equity investments at fair value		(6,673,731	)		—			(6,673,731	)		6,673,731			(6,673,731	)
Total other comprehensive income items for the period	Ps.	112,325,415		Ps.	743,678		Ps.	109,126,385		Ps.	(106,547,973	)	Ps.	115,647,505
Total comprehensive income for the period	Ps.	120,974,842		Ps.	(5,933,380	)	Ps.	163,429,829		Ps.	(150,745,047	)	Ps.	127,726,244
Comprehensive income for the period attributable to:
Equity holders of the parent	Ps.	120,974,842		Ps.	(5,933,380	)	Ps.	150,900,984		Ps.	(144,967,604	)	Ps.	120,974,842
Non-controlling interests		—			—			12,528,845			(5,777,443	)		6,751,402
	Ps.	120,974,842		Ps.	(5,933,380	)	Ps.	163,429,829		Ps.	(150,745,047	)	Ps.	127,726,244

Condensed consolidating statements of comprehensive income

For the year ended December 31, 2017

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Total revenues	Ps.	160,057,511		Ps.	170,991,493		Ps.	887,951,615		Ps.	(197,367,084	)	Ps.	1,021,633,535
Total cost and operating expenses		123,548,341			163,152,868			832,429,198			(197,640,175	)		921,490,232
Operating income		36,509,170			7,838,625			55,522,417			273,091			100,143,303
Interest (expense) income, net		(16,779,235	)		(12,365,116	)		1,810,523			(41,305	)		(27,375,133	)
Foreign currency exchange (loss) gain, net		(15,223,111	)		1,320,667			83,493			—			(13,818,951	)
Other financing cost, net		6,775,455			—			(8,719,215	)		—			(1,943,760	)
Income tax		14,201,399			1,386,519			9,353,593			—			24,941,511
Equity interest in net income of associated companies		32,245,041			(8,977,146	)		(13,466,845	)		(9,709,665	)		91,385
Net profit (loss) for year	Ps.	29,325,921		Ps.	(13,569,489	)	Ps.	25,876,780		Ps.	(9,477,879	)	Ps.	32,155,333
Distribution of the net profit (loss) to:
Equity owners of holding company		29,325,921			(13,569,489	)		21,417,549			(7,848,060	)		29,325,921
Non-controlling interest		—			—			4,459,231			(1,629,819	)		2,829,412
Net profit (loss)	Ps.	29,325,921		Ps.	(13,569,489	)	Ps.	25,876,780		Ps.	(9,477,879	)	Ps.	32,155,333
Other comprehensive income items:
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities		(21,683,333	)		(1,897,936	)		(18,309,877	)		23,581,269			(18,309,877	)
Effect of fair value of derivatives, net of deferred taxes		12,292			—			12,292			(12,292	)		12,292
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect		(7,075,606	)		(8,439	)		(7,046,089	)		7,084,045			(7,046,089	)
Equity investments at fair value		622,424			—			622,424			(622,424	)		622,424
Total other comprehensive income items for the period	Ps.	(28,124,223	)	Ps.	(1,906,375	)	Ps.	(24,721,250	)	Ps.	30,030,598		Ps.	(24,721,250	)
Total comprehensive income for the period	Ps.	1,201,698		Ps.	(15,475,864	)	Ps.	1,155,530		Ps.	20,552,719		Ps.	7,434,083
Comprehensive income for the period attributable to:
Equity holders of the parent	Ps.	1,201,698		Ps.	(15,475,864	)	Ps.	(5,076,855	)	Ps.	20,552,719		Ps.	1,201,698
Non-controlling interests		—			—			6,232,385			—			6,232,385
	Ps.	1,201,698		Ps.	(15,475,864	)	Ps.	1,155,530		Ps.	20,552,719		Ps.	7,434,083

Condensed consolidating statements of comprehensive income

For the year ended December 31, 2018

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Total revenues	Ps.	170,887,145		Ps.	190,924,413		Ps.	890,427,121		Ps.	(214,030,998	)	Ps.	1,038,207,681
Total cost and operating expenses		129,039,749			183,542,058			799,085,884			(213,017,181	)		898,650,510
Operating income		41,847,396			7,382,355			91,341,237			(1,013,817	)		139,557,171
Interest (expense) income, net		(24,831,538	)		(11,033,069	)		14,757,906			(18,563	)		(21,125,264	)
Foreign currency exchange (loss) gain, net		11,805,283			626,304			(19,693,543	)		—			(7,261,956	)
Other financing cost, net		(4,443,892	)		—			(5,732,424	)		—			(10,176,316	)
Income tax		17,754,010			798,639			27,924,430			—			46,477,079
Equity interest in net income of associated companies		46,101,188			1,325,723			(2,497,059	)		(44,929,585	)		267
Net profit (loss) for year	Ps.	52,724,427		Ps.	(2,497,326	)	Ps.	50,251,687		Ps.	(45,961,965	)	Ps.	54,516,823
Distribution of the net profit (loss) to:
Equity owners of holding company		52,724,427			(2,497,326	)		46,641,696			(44,302,600	)		52,566,197
Non-controlling interest		—			—			3,609,991			(1,659,365	)		1,950,626
Net profit (loss)	Ps.	52,724,427		Ps.	(2,497,326	)	Ps.	50,251,687		Ps.	(45,961,965	)	Ps.	54,516,823
Other comprehensive income items:
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities		(61,223,458	)		(724,521	)		(64,314,032	)		61,947,979			(64,314,032	)
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect		652,722			(1,603,145	)		757,278			950,423			757,278
Equity investments at fair value		(3,765,688	)		—			(3,765,688	)		3,765,688			(3,765,688	)
Total other comprehensive income items for the period	Ps.	(64,336,424	)	Ps.	(2,327,666	)	Ps.	(67,322,442	)	Ps.	66,664,090		Ps.	(67,322,442	)
Total comprehensive income for the period	Ps.	(11,611,997	)	Ps.	(4,824,992	)	Ps.	(17,070,755	)	Ps.	20,702,125		Ps.	(12,805,619	)
Comprehensive income for the period attributable to:
Equity holders of the parent	Ps.	(11,611,997	)	Ps.	(4,824,992	)	Ps.	(16,035,363	)	Ps.	20,702,125		Ps.	(11,770,227	)
Non-controlling interests		—			—			(1,035,392	)		—			(1,035,392	)
	Ps.	(11,611,997	)	Ps.	(4,824,992	)	Ps.	(17,070,755	)	Ps.	20,702,125		Ps.	(12,805,619	)

Condensed consolidating statements of cash flows

For the year ended December 31, 2016

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Operating activities:
Profit before taxes	Ps.	937,247		Ps.	(5,537,427	)	Ps.	28,077,775		Ps.	—		Ps.	23,477,595
Non-cash items		(997,587	)		19,800,396			209,821,118			—			228,623,927
Changes in working capital:		74,520,320			9,130,768			(93,359,195	)		(6,595,361	)		(16,303,468	)
Net cash flows provided by operating activities	Ps.	74,459,980		Ps.	23,393,737		Ps.	144,539,698		Ps.	(6,595,361	)	Ps.	235,798,054
Investing activities:
Purchase of property, plant and equipment		—			(7,860,232	)		(130,846,925	)		—			(138,707,157	)
Acquisition of intangibles		—			(4,947,506	)		(11,369,232	)		—			(16,316,738	)
Dividends received from associates		21,950			—			5,988,938			(270,796	)		5,740,092
Proceeds from sale of plant, property and equipment		20,078			—			95,522			—			115,600
Acquisition of business, net of cash acquired		—			(2,796,254	)		(1,823,813	)		2,796,254			(1,823,813	)
Partial sale of shares of associate company		756,444			—			2,796,254			(3,552,698	)		—
Investment in associates companies		—			663,203			(666,690	)		—			(3,487	)
Net cash flows provided by (used in) investing activities	Ps.	798,472		Ps.	(14,940,789	)	Ps.	(135,825,946	)	Ps.	(1,027,240	)	Ps.	(150,995,503	)
Financing activities:
Bank loans, net		(39,598,698	)		—			(21,792,115	)		—			(61,390,813	)
Acquisition of no controlling interest		—			—			(2,280,278	)		—			(2,280,278	)
Interest paid		(24,826,139	)		(7,972,827	)		(5,922,267	)		6,595,361			(32,125,872	)
Paid-In capital		—			—			(756,444	)		756,444			—
Sale of shares of subsidiaries		—			—			6,323,336			—			6,323,336
Repurchase of shares and others		(7,092,385	)		—			71,138			—			(7,021,247	)
Payment of dividends		(13,437,168	)		—			(643,585	)		270,796			(13,809,957	)
Derivative financial instruments		—			—			(351,213	)		—			(351,213	)
Net cash flows (used in) financing activities	Ps.	(84,954,390	)	Ps.	(7,972,827	)	Ps.	(25,351,428	)	Ps.	7,622,601		Ps.	(110,656,044	)
Net (decrease) increase in cash and cash equivalents		(9,695,938	)		480,121			(16,637,676	)		—			(25,853,493	)
Adjustment to cash flow for exchange rate differences		—			—			3,911,844			—			3,911,844
Cash and cash equivalents at beginning of the period		13,803,584			1,468,036			29,888,412			—			45,160,032
Cash and cash equivalents at end of the period	Ps.	4,107,645		Ps.	1,948,159		Ps.	17,162,579		Ps.	—		Ps.	23,218,383

Condensed consolidating statements of cash flows

For the year ended December 31, 2017

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Operating activities:
Profit before taxes	Ps.	43,527,320		Ps.	(12,182,970	)	Ps.	35,230,373		Ps.	(9,477,879	)	Ps.	57,096,844
Non-cash items		(17,017,287	)		30,000,109			171,062,158			11,635,563			195,680,543
Changes in working capital:		(18,973,478	)		(9,486	)		(66,062,629	)		50,040,581			(35,005,012	)
Net cash flows provided by operating activities	Ps.	7,536,555		Ps.	17,807,653		Ps.	140,229,902		Ps.	52,198,265		Ps.	217,772,375
Investing activities:
Purchase of property, plant and equipment		16,526			(5,571,410	)		(113,630,253	)		—			(119,185,137	)
Acquisition of intangibles		—			(3,053,345	)		(14,485,196	)		—			(17,538,541	)
Dividends received from associates		21,465,687			970,000			2,385,559			(22,435,687	)		2,385,559
Proceeds from sale of plant, property and equipment		—			—			133,349			—			133,349
Acquisition of business, net of cash acquired		—			(3,381,505	)		(3,497,288	)		—			(6,878,793	)
Investment in associates companies		—			1,925,898			—			(1,925,898	)		—
Sale of associated company		—			—			340,040			—			340,040
Net cash flows provided by (used in) investing activities	Ps.	21,482,213		Ps.	(9,110,362	)	Ps.	(128,753,789	)	Ps.	(24,361,585	)	Ps.	(140,743,523	)
Financing activities:
Bank loans, net		13,548,138			—			16,382,838			(57,364,465	)		(27,433,489	)
Acquisition of no controlling interest		—			—			(11,930	)		—			(11,930	)
Interest paid		(24,009,216	)		(7,092,098	)		(7,187,225	)		7,092,098			(31,196,441	)
Repurchase of shares and others		(1,240,028	)		—			6,657			—			(1,233,371	)
Payment of dividends		(14,406,748	)		—			(24,120,329	)		22,435,687			(16,091,390	)
Derivative financial instruments		—			—			(71,474	)		—			(71,474	)
Net cash flows used in financing activities	Ps.	(26,107,854	)	Ps.	(7,092,098	)	Ps.	(15,001,463	)	Ps.	(27,836,680	)	Ps.	(76,038,095	)
Net (decrease) increase in cash and cash equivalents		2,910,914			1,605,193			(3,525,350	)		—			990,757
Adjustment to cash flow for exchange rate differences		—			—			61,333			—			61,333
Cash and cash equivalents at beginning of the period		4,107,645			1,948,159			17,162,579			—			23,218,383
Cash and cash equivalents at end of the period	Ps.	7,018,559		Ps.	3,553,352		Ps.	13,698,562		Ps.	—		Ps.	24,270,473

Condensed consolidating statements of cash flows

For the year ended December 31, 2018

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Operating activities:
Profit before taxes	Ps.	70,478,437		Ps.	(1,698,687	)	Ps.	78,176,117		Ps.	(45,961,965	)	Ps.	100,993,902
Non-cash items		(23,099,316	)		20,952,414			149,503,016			39,836,704			187,192,818
Changes in working capital:		(49,040,542	)		(35,329,228	)		(61,332,380	)		105,845,958			(39,856,192	)
Net cash flows provided by operating activities	Ps.	(1,661,421	)	Ps.	(16,075,501	)	Ps.	166,346,753		Ps.	99,720,697		Ps.	248,330,528
Investing activities:
Purchase of property, plant and equipment		(17,709	)		(4,031,228	)		(139,839,096	)		—			(143,888,033	)
Acquisition of intangibles		—			(2,993,373	)		(4,940,274	)		—			(7,933,647	)
Dividends received from associates		24,314,803			—			2,622,237			(24,314,803	)		2,622,237
Proceeds from sale of plant, property and equipment		—			—			178,532			—			178,532
Acquisition of business, net of cash acquired		—			—			(310,604	)		—			(310,604	)
Investment in associates companies		—			(5,092,881	)		—			5,092,881			—
Sale of associated company		—			—			548,484			—			548,484
Net cash flows provided by (used in) investing activities	Ps.	24,297,094		Ps.	(12,117,482	)	Ps.	(141,740,721	)	Ps.	(19,221,922	)	Ps.	(148,783,031	)
Financing activities:
Bank loans, net		24,784,341			—			19,592,788			(78,428,052	)		(34,050,923	)
Acquisition of no controlling interest		—			—			(115,821	)		—			(115,821	)
Interest paid		(24,802,363	)		26,385,526			(6,066,654	)		(26,385,526	)		(30,869,017	)
Repurchase of shares and others		(514,007	)		—			2,586			—			(511,421	)
Payment of dividends		(20,787,102	)		—			(25,897,494	)		24,314,803			(22,369,793	)
Redemption of hybrid bond		—			—			(13,440,120	)		—			(13,440,120	)
Net cash flows used in financing activities	Ps.	(21,319,131	)	Ps.	26,385,526		Ps.	(25,924,715	)	Ps.	(80,498,775	)	Ps.	(101,357,095	)
Net (decrease) increase in cash and cash equivalents		1,316,542			(1,807,457	)		(1,318,683	)		—			(1,809,598	)
Adjustment to cash flow for exchange rate differences		—			—			(800,913	)		—			(800,913	)
Cash and cash equivalents at beginning of the period		7,018,559			3,553,352			13,698,562			—			24,270,473
Cash and cash equivalents at end of the period	Ps.	8,335,101		Ps.	1,745,895		Ps.	11,578,966		Ps.	—		Ps.	21,659,962

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Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices (Policies)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Basis of preparation

a) Basis of preparation

The accompanying consolidated financial statements have been prepared in conformity with International Financial Reporting Standards, as issued by the International Accounting Standards Board (“IASB”) (hereafter referred to as IFRS).

The consolidated financial statements have been prepared on the historical cost basis, except for the derivative financial instruments, the trust assets of post-employment and other employee benefit plans and the investments in equity at fair value through OCI which are presented at their market value.

Effectively July 1, 2018, the Argentinian economy is considered to be hyperinflationary in accordance with the criteria in IAS 29 “Financial Reporting in Hyperinflationary Economies” (“IAS 29”). Accordingly, for the Argentina subsidiaries, we have included, adjustments for hyperinflation and reclassifications as is required by the standard for purposes of presentation of IFRS in the consolidated financial statements.

The preparation of these consolidated financial statements under IFRS requires the use of critical estimates and assumptions that affect the amounts reported for certain assets, liabilities, income and expenses. It also requires that management exercise judgment in the application of the Company’s accounting policies. Actual results could differ from these estimates and assumptions.

The Mexican peso is the functional currency of the Company’s Mexican operations and the consolidated reporting currency of the Company.

i) Changes in Accounting Policies and Disclosures

The Company applied IFRS 15 “Revenue from Contracts with Customers” (IFRS 15) and IFRS 9 “Financial Instruments” (IFRS 9) for the first time effective January 1, 2018. The nature and effect of the changes as a result of adoption of these new accounting standards are described below.

The accounting policies applied in the preparation of the consolidated financial statements for the year ended December 31, 2018 are consistent with those used in the preparation of the Company´s consolidated annual financial statements for the years ended December 31, 2017 and 2016, with the exception of the following new standards and amendments to existing standards issued by the IASB, which were mandatory for annual periods beginning on or after January 1, 2018:

a) IFRS 15 Revenue from contract with customer

In May 2014, the IASB issued the new standard IFRS 15. The new standard for revenue recognition aims at standardizing the multitude of regulations previously included in various standards, and may require more judgment and estimates than with the revenue recognition processes that were required under the previously existing revenue recognition standards

IFRS 15 supersedes IAS 11 Construction Contracts, IAS 18 Revenue and related Interpretations and it applies, with limited exceptions, to all revenue arising from contracts with customers. IFRS 15 establishes a five-step model to account for revenue arising from contracts with customers and requires that revenue be recognized at an amount that reflects the consideration to which an entity expects to be entitled in exchange for transferring goods or services to a customer.

IFRS 15 requires entities to exercise judgment, taking into consideration all of the relevant facts and circumstances when applying each step of the model to contracts with their customers. The standard also specifies the accounting for the incremental costs of obtaining a contract and the costs directly related to fulfilling a contract. In addition, the standard requires relevant disclosures.

The Company adopted IFRS 15 using the modified retrospective method of adoption with the date of initial application on January 1, 2018. Under this method, the standard can be applied either to all contracts at the date of initial application or only to contracts that are not completed at this date. The Company elected to apply the standard to all contracts as of January 1, 2018.

The cumulative effect of initially applying IFRS 15 was recognized at the date of initial application as an adjustment to the opening balance of retained earnings. Therefore, the comparative information was not restated and continues to be reported under IAS 11, IAS 18 and related Interpretations. The most significant changes in the implementation of IFRS 15 are the earlier recognition of revenue from the sale of goods, and the capitalization and deferral of the incremental contracts acquisition costs over the expected period of benefit.

The effect of adopting IFRS 15 as of January 1, 2018 was, as follows:

	Reference		Increase
Assets:
Subscribers, distributors, recoverable taxes, contract assets and other, net		(a), (b), (c)	Ps.	31,261,436
Liabilities:
Current liabilities		(c)	Ps.	562,651
Deferred income taxes		(d)		8,725,841
			Ps.	9,288,492
Equity:
Retained earnings		(a), (b), (c), (d)		21,454,504
Non-controlling interests				518,440
Total equity				21,972,944
Total liabilities and equity			Ps.	31,261,436

Set out below are, the impacts of adopting IFRS 15 on the Company´s consolidated financial statements for the year ended December 31, 2018:

	Reference		As reported			Figures without adoption of IFRS 15			Adjustments
Operating revenues:
Revenues services		(a), (b)	Ps.	863,647,642		Ps.	881,530,167		Ps.	(17,882,525	)
Sales of equipment		(a), (b)		174,560,039			158,721,765			15,838,274
				1,038,207,681			1,040,251,932			(2,044,251	)
Operating costs and expenses:
Cost of sales and services			Ps.	508,822,430		Ps.	509,100,174		Ps.	(277,744	)
Commercial, administrative and general and other expenses		(c)		234,115,500			240,010,631			(5,895,131	)
Depreciation and amortization				155,712,580			155,712,580			—
				898,650,510			904,823,385			(6,172,875	)
				139,557,171			135,428,547			4,128,624
Financial items, net				38,563,536			38,356,359			207,177
Equity interest in net result of associated companies				267			267			—
Income tax		(d)		46,477,079			45,496,698			980,381
Non-controlling interests				(1,950,626	)		(1,950,626	)		—
Net profit for the year			Ps.	52,566,197		Ps.	49,625,131		Ps.	2,941,066

	Reference		As reported		Balances without adoption of IFRS 15		Adjustments
Assets:
Current assets:
Cash and cash equivalents and equity investments at fair value			Ps.	70,675,896	Ps.	70,675,896	Ps.	—
Subscribers, distributors, recoverable taxes, contract assets and other, net		(a), (b), (c)		216,226,920		185,303,634		30,923,286
Other current assets, net				62,152,708		62,152,708		—
Total current assets				349,055,524		318,132,238		30,923,286
Non-current assets:
Property, plant and equipment, net				640,000,720		640,000,720		—
Intangibles and other assets, net				424,485,276		424,485,276		—
Subscribers, distributors, recoverable taxes, contract assets and other, net		(a), (b), (c)		15,681,872		10,244,609		5,437,263
Total assets			Ps.	1,429,223,392	Ps.	1,392,862,843	Ps.	36,360,549
Liabilities and equity:
Current liabilities:
Short-term debt and current portion of long-term debt			Ps.	96,230,634	Ps.	96,230,634	Ps.	—
Accounts payable and other liabilities				338,116,412		337,448,940		667,472
Deferred revenues				32,743,843		32,315,690		428,153
Total current liabilities				467,090,889		465,995,264		1,095,625
Non-current-liabilities:
Long-term debt				542,691,819		542,691,819		—
Deferred income taxes		(d)		24,573,441		15,382,500		9,190,941
Other liabilities				148,994,821		148,994,821		—
Total liabilities				1,183,350,970		1,173,064,404		10,286,566
Total equity		(d)		245,872,422		219,798,439		26,073,983
Total liabilities and equity			Ps.	1,429,223,392	Ps.	1,392,862,843	Ps.	36,360,549

IFRS 15 Revenues from contracts with customers

IFRS 15 establishes a comprehensive framework for determining when to recognize revenue and how much revenue to recognize. The principle core is that an entity should recognize revenue to depict the transfer of promised goods or services to the customer in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The most significant changes in the implementation of IFRS 15 are as follows:

a. The Company provides fixed and mobile services. These services are offered independently in contracts with customers or together with the sale of handsets (mobile) under the postpaid model. In accordance with IFRS 15, the transaction price should be assigned to the different performance obligations based on their relative standalone selling price.

The Company concluded that regarding the provided services, it has market observable information, to determine the standalone selling price of the services. On the other hand, in the case of the sale of bundled mobile phones sold (including service and handset) by the Company, the allocation of the sales is done based on their relative standalone selling price of each individual component related to the total bundled price. The result is that more equipment revenue is recognized at the moment of a sale and, therefore, less service revenue from the monthly fee are being recognized under the new standard.

The Company concluded as well that the provided services are satisfied over the time of the contract period, given that the customer simultaneously receives and consumes the benefits provided by the Company.

Such service bundles, voice and data, accomplish the criteria mentioned in IFRS 15 of being substantially similar and of having the same transfer pattern which is why the Company concluded that the revenue from these different services offered to its customers are considered as a single performance obligation with revenue being recognized over time, except for sales of equipment.

b. Under IFRS 15, for those contracts with customers in which generally the sale of equipment and other electronic equipment is a single performance obligation, the Company recognizes the revenue at the moment when it transfers control to the customer which generally occurs when such goods are delivered. The latter is consistent with the previous accounting policy.

c. The Company pays commissions to its distributors for obtaining new customers; such commissions were expensed as incurred under the previous accounting. Under IFRS 15, commissions are considered incremental contract acquisition costs that are capitalized and are amortized over the expected period of benefit, during the average duration of customer contracts.

d. In addition to the adjustments described above, other items such as deferred taxes and non-controlling interests were adjusted to retained earnings as necessary upon adoption of IFRS 15 as of January 1, 2018.

b) IFRS 9, Financial Instruments

IFRS 9 was issued in July 2014 and replaced IAS 39 Financial Instruments and relates to the classification and measurement of financial instruments, impairment; and hedge accounting.

The Company applied IFRS 9 prospectively, with an initial application date of January 1, 2018. The Company has not restated the comparative information, which continues to be reported under IAS 39.

The effect of adopting IFRS 9 as of January 1, 2018 was, as follows:

	Adjustments		January 1, 2018
Assets
Trade receivables		(a)	Ps.	(2,400,783	)
Deferred tax assets		(b)		544,628
Total assets			Ps.	(1,856,155	)
Equity
Retained earnings		(a), (b)	Ps.	(1,856,155	)
Total adjustment on equity			Ps.	(1,856,155	)

IFRS 9 sets out the requirements for recognizing and measuring financial assets and financial liabilities. This new standard includes:

a) Impairment

The adoption of IFRS 9 has fundamentally changed the Company´s accounting for impairment losses for financial assets by replacing IAS 39’s incurred loss approach with a forward-looking expected credit loss approach. IFRS 9 requires the Company to recognize an allowance for expected credit loss for all debt instruments not held at fair value through profit or loss and contract assets.

Upon adoption of IFRS 9 the Company recognized an impairment on the Company´s trade receivables at fair value Ps 2,400,783 as of January 1, 2018, which resulted in a decrease in Retained earnings. There were no impairment losses that impacted the carrying amount of debt instruments at fair value through OCI in the statements of financial position, which remains at fair value.

b) Other adjustments

In addition to the adjustments described above, other items such as deferred taxes and non-controlling interests were adjusted to retained earnings as necessary upon adoption of IFRS 9 as of January 1, 2018.

The new requirements of IFRS 9 regarding hedge accounting do not have an effect on the consolidated financial statements as hedge accounting is not applied. The Company continues to consider the hedges to be under IAS 39 as allowed by IFRS 9.

Compared to IAS 39, the application of IFRS 9 had an immaterial effect on the consolidated financial statements in 2018, including classification of financial assets and liabilities.

c) Impact of the application for hyperinflation in Argentina

In the recent years, the Argentina economy has shown high rates of inflation. Although inflation data has not been consistent in recent years and several indexes have coexisted, inflation in Argentina indicates that the three-year cumulative inflation rate recently exceeded 100%, which is the quantitative reference established by IAS 29. As a result, Argentina is considered a hyperinflationary economy in 2018 and the Company applies hyper-inflation accounting to its subsidiary whose functional currency is the Argentine peso for financial information for periods ending on or after July 1, 2018, however the calculation of the accumulative impact was measured as of January 1, 2019.

In order to restate for hyperinflation its financial statements, the subsidiary used the series of indices defined by resolution JG No. 539/18 issued by the “Federación Argentina de Consejos Profesionales de Ciencias Económicas” (FACPCE), based on the National Consumer Price Index (IPC) published by the Instituto Nacional de Estadística y Censos (INDEC) of the Argentine Republic and the Wholesale Internal Price Index (IPIM) published by FACPCE. The cumulative index December 31, 2018 is 184.255, while on an annual inflation for 2018 is 48%.

The main implications are as follows:

• Adjustment of the historical cost of non-monetary assets and liabilities and equity items from their date of acquisition, or the date of inclusion in the consolidated statements of financial position, to the end of the year, in order to reflect changes in the currency’s purchasing power caused by inflation.

• The gain on the net monetary position caused by the impact of inflation in the year is included in the consolidated statements of comprehensive income as part of the caption “Valuation of derivatives, interest cost from labor obligations and other financial items, net. Items in the income statements and in the statements of cash flows are adjusted by the inflation index since their origination, with a balancing entry, and a reconciling item in the statements of cash flows, respectively.

• All items in the financial statements of the Argentine company are translated at the closing exchange rate, which at December 31, 2018 was 0.5221 argentine pesos per mexican peso.

• Financial information for financial years prior to 2018 are not restated.

The main impact in the consolidated financial statements of the Company in 2018 of applying hyperinflationary accounting under IAS 29 are shown below:

	Impact of the application of hyperinflation adjustments in 2018
Impact in:
Operating revenues		Ps. 6,286,140
Operating loss		(1,423,252	)
Financial loss		(1,289,317	)
Gain on net monetary positions		4,429,145
Income tax		(770,928	)
Net profit for the year		945,647
Current assets		1,866,674
Non-current assets		19,796,073
Total liabilities		4,890,166
Total equity (i)		16,772,581

(i) This total includes the initial effect of hyperinflation of Ps. 15,826,934 and the net effect on results due to the hyperinflation of the year of Ps. 945,647.

ii) Basis of consolidation

The consolidated financial statements include the accounts of América Móvil, S.A.B. de C.V. and those subsidiaries over which the Company exercises control. The consolidated financial statements for the subsidiaries were prepared for the same period as the Company´s and applying consistent accounting policies. All of the subsidiary companies operate in the telecommunications sector or related.

Subsidiaries are entities over which the Company has control. Control is achieved when the Company has power over the investee, when it is exposed to, or has rights to, variable returns from its involvement with the investee, and has the ability to use its power over the investee to affect the amount of the investor’s returns. Subsidiaries are consolidated on a line by line basis from the date which control is achieved by the Company. The Company reassesses whether or not it controls an investee if facts and circumstances indicate that there are changes to one or more of the elements of control.

Changes in the Company’s ownership interests in a subsidiary that do not result in the Company losing control over the subsidiary are accounted for as equity transactions. The carrying amounts of the equity attributable to owners of the parent and non-controlling interests are adjusted to reflect the changes in their relative interests in the subsidiary. Any difference between the carrying amount of the non-controlling interests and the fair value of the consideration paid or received in the transaction is recognized directly in the equity attributable to the owners.

Subsidiaries are deconsolidated from the date which control ceases. When the Company ceases to have control over a subsidiary, it derecognizes the assets (including any goodwill) and liabilities of the subsidiary at their carrying amounts, derecognizes the carrying amount of non-controlling interests in the former subsidiary and recognizes the fair value of any consideration received from the transaction. Any retained interest in the former subsidiary is then remeasured to its fair value.

All intra-Company balances and transactions, and any unrealized gains and losses arising from intra-Company transactions, are eliminated in preparing the consolidated financial statements.

Non-controlling interests represent the portion of profits or losses and net assets not held by the Company. Non-controlling interests are presented separately in the consolidated statements of comprehensive income and in equity in the consolidated statements of financial position separately from Company’s own equity.

Associates:

An associate is an entity over which the Company has significant influence. Significant influence is the power to participate in the financial and operating policy decisions of the investee but does not have control or joint control over those decisions.

The Company’s investment in associates includes goodwill identified on acquisition, net of any accumulated impairment losses.

The investments in associated companies in which the Company exercises significant influence are accounted for using the equity method, whereby Company recognizes its share in the net profit (losses) and equity of the associate.

The results of operations of the subsidiaries and associates are included in the Company’s consolidated financial statements beginning as of the month following their acquisition and its share of other comprehensive income after acquisition is recognized directly in other comprehensive income.

The Company assesses at each reporting date whether there is objective evidence that investment in associates is impaired. If so, the Company calculates the amount of impairment as the difference between the recoverable amount of the associate and its carrying value.

The equity interest in the most significant subsidiaries at December 31, 2017 and 2018 is as follows:

Company name	Country		Equity interest at December 31
			2017			2018
Subsidiaries:
América Móvil B.V. a)		Netherlands		100.0	%		100.0	%
Compañía Dominicana de Teléfonos, S.A. (“Codetel”) b)		Dominican Republic		100.0	%		100.0	%
Sercotel, S.A. de C.V. a)		Mexico		100.0	%		100.0	%
Radiomóvil Dipsa, S.A. de C.V. and subsidiaries (“Telcel”) b)		Mexico		100.0	%		100.0	%
Puerto Rico Telephone Company, Inc. b)		Puerto Rico		100.0	%		100.0	%
Servicios de Comunicaciones de Honduras, S.A. de C.V. (“Sercom Honduras”) b)		Honduras		100.0	%		100.0	%
TracFone Wireless, Inc. (“TracFone”) b)		USA		100.0	%		100.0	%
Claro S.A. (Claro Brasil) b)		Brazil		97.7	%		98.2	%
Telecomunicaciones de Guatemala, S.A. (“Telgua”) b)		Guatemala		99.3	%		99.3	%
Empresa Nicaragüense de Telecomunicaciones, S.A. (“Enitel”) b)		Nicaragua		99.6	%		99.6	%
Compañía de Telecomunicaciones de El Salvador, S.A. de C.V. (“CTE”) b)		El Salvador		95.8	%		95.8	%
Comunicación Celular, S.A. (“Comcel”) b)		Colombia		99.4	%		99.4	%
Telmex Colombia, S.A. b)		Colombia		99.3	%		99.3	%
Consorcio Ecuatoriano de Telecomunicaciones, S.A. (“Conecel”) b)		Ecuador		100.0	%		100.0	%
AMX Argentina, S.A. b)		Argentina		100.0	%		100.0	%
AMX Paraguay, S.A. b)		Paraguay		100.0	%		100.0	%
AM Wireless Uruguay, S.A. b)		Uruguay		100.0	%		100.0	%
Claro Chile, S.A. b)		Chile		100.0	%		100.0	%
América Móvil Perú, S.A.C b)		Peru		100.0	%		100.0	%
Claro Panamá, S.A. b)		Panamá		100.0	%		100.0	%
Teléfonos de México, S.A.B. de C.V. b)		Mexico		98.8	%		98.8	%
Telekom Austria AG b)		Austria		51.0	%		51.0	%

a) Holding companies

b) Operating companies of mobile and fixed services

iii) Basis of translation of financial statements of foreign subsidiaries and associated companies

The operating revenues of foreign subsidiaries jointly represent approximately 72%, 74% and 73% of consolidated operating revenues of 2016, 2017 and 2018, respectively, and their total assets jointly represent approximately 81% and 80% of consolidated total assets at December 31, 2017 and 2018, respectively.

The financial statements of foreign subsidiaries have been prepared under or translated to IFRS in the respective local currency (which is their functional currency) and then translated into the Company´s reporting currency as follows:

• all monetary assets and liabilities were translated at the closing exchange rate of the period;

• all non-monetary assets and liabilities at the closing exchange rate of the period;

• equity accounts are translated at the exchange rate at the time the capital contributions were made and the profits were generated;

• revenues, costs and expenses are translated at the average exchange rate of the period, except for the operations of the subsidiaries in Argentina; whose economy is considered hyperinflationary since 2018;

• the resulting difference from the translation process is recognized in equity in the caption Cumulative translation adjustment;

• the consolidated statements of cash flows presented using the indirect method were translated using the weighted-average exchange rate for the applicable period (except for Argentina), and the resulting difference is shown in the consolidated statements of cash flows under the heading “Adjustment to cash flows due to exchange rate fluctuations, net”.

The basis of translation for the operations of the subsidiaries in Argentina are described in Note 2i, c)

The difference resulting from the translation process is recognized in equity in the caption “Effect of translation of foreign entities”. At December 31, 2017 and 2018, the cumulative translation adjustment was Ps. 7,866,158 and Ps. (53,357,300), respectively.

Revenue recognition

b)

The Company revenues are derived principally from providing the following telecommunications services and products: wireless voice, wireless data and value-added services, fixed voice, fixed data, broadband and IT services, Pay TV and over-the-top (“OTT”) services.

The wireless voices services are offered under a variety of plans. In addition, the Company often bundle wireless data telecommunications services together with voices services. Monthly rent in post- paid is billed based on the associated plan o package rates, corresponding to when the services are provided.

As part the wireless data services, the Company offer value-added services that include Internet access, messaging and other wireless entertainment and corporative services, Revenue from such services are recognized at the time they are provided, on the date the installation or when the services are downloaded. In addition, the Company offer other wireless services, including wireless security services, mobile payments solutions, machine-to-machine services, mobile banking, virtual private network (“VPN”) services, video calls and Personal Communication Services (“PCS”).

The fixed voices services include local, domestic and international long-distance and public telephone services, under a variety of plans, specifically tailored to our residential and corporate clients. Revenue from the local services are derived from the monthly rent for services and the long-distances revenues are recognized at the time the service is provided.

The Company offer data services, including data centers, data administration and hosting services to our residential and corporate clients under a variety of plans. These revenues are recognized at the time the service is provided.

The residential broadband access are typically bundled with voice services and are competitively priced as a function of the desired or available speed. As a complement to these services, the Company offer a number of products such as home networking and smart home services. In addition, The Company provide different IT solutions for small business and large corporations.

The Company offer Pay TV through cable and satellite TV subscriptions to both retail and corporate customers under a variety of plans. These services are offered through individual subscription plans as well as in bundled packages of services, along with broadband, fixed voice and wireless services. In addition, the Company sell video, audio and other media content that is delivered through the internet directly from the content provider to the viewer or end user. These revenues are recognized at the time the service is provided.

The Company sells to its customers bundles of different services (fixed line, mobile, broadband internet, streaming and pay TV, among others) which elements are evaluated to determine if it is necessary to separate the different identifiable components and apply the income recognition policy corresponding to each element.

Total package revenue is allocated among the identified elements based on their respective standalone selling prices.

Determining standalone selling prices for each identified element requires estimates that are complex due to the nature of the business. A change in estimates of standalone selling prices could affect the apportionment of revenue among the elements and, as a result, the timing of recognition of revenues.

Transaction prices are allocated to the performance obligations by reference to the relative stand-alone selling prices of the products and services. The stand-alone selling prices of products are based on the market prices of alternative providers whereas the stand-alone selling prices of services are available separately, as services are also offered on a stand-alone basis, i.e. without hardware.

Some subsidiaries have loyalty programs where the Company awards credits customer credit awards referred as “points”. The customer can redeem accrued “points” for awards such as devices, accessories or airtime. The Company provides all awards. The consideration allocated to the award credits is identified as a separate performance obligation; the corresponding liability of the award credits is measured at its fair value. The consideration allocated to award credits amount is recognized as a contract liability until the points are redeemed. Revenue is recognized upon redemption of products by the customer.

Cost of sales

c)

The cost of mobile equipment and computers is recognized at the time the client and distributor receives the device that is when the control is are transferred to the customer.

Cost of services

d)

The cost of services represents the costs incurred to properly deliver the services to the customers, it includes the network operating costs and licenses related costs and is accounted at the moment in which such services are provided.

Commissions to distributors

e)

The Company pays commissions to its distributors different than those that acquire customers. Such commissions are recognized in “commercial, administrative and general expenses” in the consolidated statements of comprehensive income at the time in which the distributor either reports an activation or reaches certain number of lines activated or obtained at a certain point of time.

Cash and cash equivalents

f)

Cash and cash equivalents represent bank deposits and liquid investments with maturities of less than three months. These amounts are stated at cost plus accrued interest, which is similar to their market value.

The Company also maintains restricted cash held as collateral to meet certain contractual obligations. Restricted cash is presented as part of “Other assets” within other non-current financial assets given that the restrictions are long-term in nature (See Note 9).

Equity investments at fair value through OCI and other short-term investments

g)

Equity investments at fair value through OCI and other short-term investments are primarily composed of equity investments and other short-term financial investments. Amounts are initially recorded at their estimated fair value. Fair value adjustments for equity investments are recorded through other comprehensive income, while fair value adjustments for other short-term investments are recorded in the Consolidated Statements of Comprehensive Income as they occur.

Inventories

h)

Inventories are initially recognized at historical cost and are valued using the average cost method without exceeding their net realizable value.

The estimate of the realizable value of inventories on-hand is based on their age and turnover.

Business combinations and goodwill

i)

Business combinations are accounted for using the acquisition method, which in accordance with IFRS 3, “Business acquisitions”, consists in general terms as follows:

(i) Identify the acquirer

(ii) Determine the acquisition date

(iii) Value the acquired identifiable assets and assumed liabilities

(iv) Recognize the goodwill or a bargain purchase gain

For acquired subsidiaries, goodwill represents the difference between the purchase price and the fair value of the net assets acquired at the acquisition date. The investment in acquired associates includes goodwill identified on acquisition, net of any impairment loss.

Goodwill is reviewed annually to determine its recoverability or more often if circumstances indicate that the carrying value of the goodwill might not be fully recoverable.

The possible loss of value in goodwill is determined by analyzing the recovery value of the cash generating unit (or the group thereof) to which the goodwill is associated at the time it was originated. If this recoverable amount is lower than the carrying value, an impairment loss is charged to the results of operations. The recoverable amount is determined based on the higher of fair value less cost of disposal or value in use.

For the years ended December 31, 2016, 2017 and 2018, no impairment losses were recognized for the goodwill shown in the Company’s consolidated statements of financial position.

Property, plant and equipment

j) Property, plant and equipment

i) Property, plant and equipment are recorded at acquisition cost, net of accumulated depreciation. Depreciation is computed on the cost of the assets using the straight line method, based on the estimated useful lives of the related assets, beginning the month after they become available for use.

Borrowing costs that are incurred for general financing for construction in progress for periods exceeding six months are capitalized as part of the cost of the asset. During 2016, 2017 and 2018 the borrowing costs that were capitalized amounted to Ps. 2,861,307, Ps. 2,875,034 and Ps. 2,020,288 respectively.

In addition to the purchase price and costs directly attributable to preparing an asset in terms of its physical location and condition for operating as intended by management, when required, the cost also includes the estimated costs of dismantling and removal of the asset and for restoration of the site where it is located (See Note 15c).

ii) The net book value of property, plant and equipment is removed from the consolidated statements of financial position at the time the asset is sold or when no future economic benefits are expected from its use or sale. Any gains or losses on the sale of property, plant and equipment represent the difference between net proceeds of the sale and the net book value of the item at the time of sale. These gains or losses are recognized as either other operating income or other operating expenses upon sale.

iii) The Company periodically assesses the residual values, useful lives and depreciation methods associated with its property, plant and equipment. If necessary, the effects of any changes in accounting estimates is recognized prospectively, at the closing of each period, in accordance with IAS 8, “Accounting Policies, Changes in Accounting Estimates and Errors”.

For property, plant and equipment made up of several components with different useful lives, the major individual components are depreciated over their individual useful lives. Maintenance costs and repairs are expensed as incurred.

Annual depreciation rates are as follows:

Network infrastructure	5	%-33%
Buildings and leasehold improvement	2	%-33%
Other assets	10	%-50%

iv) The carrying value of property, plant and equipment is reviewed if there are indicators of impairment in such assets. If an asset’s recovery value is less than the asset’s net carrying value, the difference is recognized as an impairment loss.

During the years ended December 31, 2016, 2017 and 2018, no impairment losses were recognized.

v) Spare parts for network operation is valued using the average cost method, without exceeding its net realizable value.

The valuation of inventory for network considered obsolete, defective or slow-moving, is reduced to their estimated net realizable value. The estimate of the recovery value of inventories is based on their age and turnover.

Intangibles

k)

i) Licenses

Licenses to operate wireless telecommunications networks granted by the governments of the countries in which the Company operates are recorded at acquisition cost or at fair value at their acquisition date, net of accumulated amortization. Certain licenses require payments to the governments, such payments are recognized in the cost of service and equipment.

The licenses that in accordance with government requirements are categorized as automatically renewable, for a nominal cost and with substantially consistent terms, are considered by the Company as intangible assets with an indefinite useful life. Accordingly, they are not amortized. Licenses are amortized when the Company does not have a basis to conclude that they are indefinite lived. Licenses are amortized using the straight-line method over a period ranging from 3 to 30 years, which represents the usage period of the assets.

The Company has conducted an internal analysis on the applicability of the International Financial Reporting Interpretation Committee (“IFRIC”) No. 12 (Service Concession Agreements) and has concluded that its concessions are outside the scope of IFRIC 12. To determine the applicability of IFRIC 12, the Company analyzes each concession or group of similar concessions in a given jurisdiction. As a threshold matter, the Company identifies those government concessions that provide for the development, financing, operation or maintenance of infrastructure used to render a public service, and that set out performance standards, mechanisms for adjusting prices and arrangements for arbitrating disputes.

With respect to those services, the Company evaluates whether the grantor controls or regulates (i) what services the operator must provide, (ii) to whom it must provide them and (iii) the applicable price (the “Services Criterion”). In evaluating whether the applicable government, as grantor, controls the price at which the Company provides its services, the Company looks at the terms of the concession agreement according to all applicable regulations. If the Company determines that the concession under analysis meets the Services Criterion, then the Company evaluates whether the grantor would hold a significant residual interest in the concession’s infrastructure at the end of the term of the arrangement.

ii) Trademarks

Trademarks are recorded at their fair value at the valuation date when acquired. The useful lives of trademarks are assessed as either definite or indefinite. Trademarks with finite useful lives are amortized using the straight-line method over a period ranging from 1 to 10 years. Trademarks with indefinite useful lives are not amortized, but are tested for impairment annually at the cash generating unit level. The assessment of indefinite life is reviewed annually to determine whether the indefinite life continues to be supportable, if not, the change in useful life from indefinite to definite is made on a prospective basis.

iii) Irrevocable rights of use

Irrevocable rights of use are recognized according to the amount paid for the right and are amortized over the period in which they are granted.

The carrying values of the Company’s licenses and trademarks are reviewed annually and whenever there are indicators of impairment in the value of such assets. When an asset’s recoverable amount, which is the higher of the asset’s fair value, less disposal costs and its value in use (the present value of future cash flows), is less than the asset’s carrying value, the difference is recognized as an impairment loss.

iv) Customer relationships

The value of customer relations is determined and valued at the time that a new subsidiary is acquired, as determined by the Company with the assistance of independent appraisers, and is amortized on a 5 year period.

During the years ended December 31, 2016, 2017 and 2018, no impairment losses were recognized for licenses, trademarks, irrevocable rights of use or customer relationships.

Impairment in the value of long-lived assets

l)

The Company assesses the existence of indicators of impairment in the carrying value of long-lived assets, investments in associates, goodwill and intangible assets according to IAS 36 “Impairment of assets”. When there are such indicators, or in the case of assets whose nature requires an annual impairment analysis (goodwill and intangible assets with indefinite useful lives), the Company estimates the recoverable amount of the asset, which is the higher of its fair value, less disposal costs, and its value in use. Value in use is determined by discounting estimated future cash flows, applying a pre-tax discount rate that reflects the time value of money and taking into consideration the specific risks associated with the asset. When the recoverable amount of an asset is below its carrying value, impairment is considered to exist. In this case, the carrying value of the asset is reduced to the asset’s recoverable amount, recognizing the loss in results of operations for the respective period. Depreciation and/or amortization expense of future periods is adjusted based on the new carrying value determined for the asset over the asset’s remaining useful life. Impairment is computed individually for each asset. Recoverable amount is determined for an individual asset, unless the asset does not generate cash inflows that are largely independent of those from other assets or group of assets.

In the estimation of impairments, the Company uses the strategic plans established for the separate cash-generating units to which the assets are assigned. Such strategic plans generally cover a period from 3 to 5 years. For longer periods, beginning in the fifth year, projections are based on such strategic plans while applying a constant or declining expected perpetual growth rate.

Key assumptions used in value in use calculations

The forecasts are made in real terms (net of inflation) and in the functional currency of the subsidiary as of December 31, 2018. Financial forecasts, premises and assumptions are similar to what any other market participant in similar conditions would consider.

Local synergies, that any other market participant would not have taken into consideration to prepare similar forecasted financial information, have not been included.

The assumptions used to develop the financial forecasts were validated for each of the cash generating units (“CGUs”), typically identified by country and by service (in the case of Mexico) taking into consideration the following:

• Current subscribers and expected growth.

• Type of subscribers (prepaid, postpaid, fixed line, multiple services)

• Market environment and penetration expectations

• New products and services

• Economic environment of each country

• Expenses for maintaining the current assets

• Investments in technology for expanding the current assets

• Market consolidation and synergies

The foregoing forecasts could differ from the results obtained through time; however, the Company prepares its estimates based on the current situation of each of the CGUs.

The recoverable amounts are based on value in use. The value in use is determined based on the method of discounted cash flows. The key assumptions used in projecting cash flows are:

• Margin on EBITDA is determined by dividing EBITDA (operating income plus depreciation and amortization) by total revenues.

• Margin on CAPEX is determined by dividing capital expenditures (“CAPEX”) by total revenues.

• Pre-tax weighted average cost of capital (“WACC”) is used to discount the projected cash flows.

As discount rate, the Company uses the WACC which was determined for each of the cash generating units and is described in the following paragraphs.

The estimated discount rates to perform the IAS 36 “Impairment of assets”, impairment test for each CGU consider market participants assumptions. Market participants were selected taking into consideration size, operations and characteristics of the business that were similar to those of Company.

The discount rates represent the current market assessment of the risks specific to each CGU, taking into consideration the time value of money and individual risks of the underlying assets that have not been incorporated in the cash flow estimates. The discount rate calculation is based on the specific circumstances of the Company and its operating segments. The WACC takes into account both debt and equity costs. The cost of equity is derived from the expected return on investment for each GCU. The cost of debt is based on the interest-bearing borrowings the Company is obliged to service. Segment-specific risk is incorporated by applying individual beta factors.

The beta factors are evaluated annually based on publicly available market data.

Market participant assumptions are important because, not only do they include industry data for growth rates, but also management assesses how the CGU’s position, relative to its competitors, might change over the forecasted period.

The most significant forward-looking estimates used for the 2017 and 2018 impairment evaluations are shown below:

	Average margin on EBITDA	Average margin on CAPEX	Average pre-tax discount rate (WACC)
2017:
Europe (7 countries)	25.59% - 52.46%	7.34% - 14.97%	9.06% - 19.04%
Brazil (fixed line, wireless and TV)	35.28%	22.13%	11.71%
Puerto Rico	23.31%	8.31%	4.42%
Dominican Republic	45.79%	15.55%	19.23%
Mexico (fixed line and wireless)	35.48%	8.72%	16.13%
Ecuador	37.83%	10.07%	23.57%
Peru	29.64%	16.75%	13.61%
El Salvador	40.36%	17.99%	25.14%
Chile	22.04%	12.45%	6.15%
Colombia	41.93%	19.88%	19.06%
Other countries	9.16% - 48.18%	0.43% - 23.43%	7.89% - 24.28%

	Average margin on EBIDTA		Average margin on CAPEX		Average pre-tax discount rate (WACC)las
2018:
Europe (7 countries)		22.13% - 41.51%		8.13% - 19.40%		8.36% - 22.08%
Brazil (fixed line, wireless and TV)		36.43%		21.88%		10.38%
Puerto Rico		23.86%		9.89%		4.81%
Dominican Republic		48.64%		18.43%		17.66%
Mexico (fixed line and wireless)		36.33%		7.93%		16.30%
Ecuador		39.83%		11.26%		24.45%
Peru		30.29%		19.95%		11.52%
El Salvador		45.36%		22.61%		18.01%
Chile		25.91%		14.99%		6.62%
Colombia		45.01%		17.14%		20.29%
Other countries		7.90% - 45.91%		0.61% - 23.96%		9.97% - 31.63%

Sensitivity to changes in assumptions:

The implications of the key assumptions for the recoverable amount are discussed below:

Margin on CAPEX- The Company performed a sensitivity analysis by increasing its CAPEX by 5% and maintaining all other assumptions the same. The sensitivity analysis would require the Company to adjust the amount of its long-lived assets in its CGUs with potential impairment of approximately Ps. 1,558,823

WACC- Additionally, should the Company increase by 50 base points in WACC per CGU and maintain all other assumptions the same, the carrying amount of the long-lived assets, would be impaired by approximately Ps. 1,135,854.

Leases

m)

The determination of whether an agreement is, or contains, a lease is based on the substance of the agreement and requires the Company to assess if performance of the agreement is dependent on the use of a specific asset and whether the agreement transfers the right of use of the asset to the Company.

Operating leases

Leases under which the lessor retains a significant portion of the risks and benefits inherent to the ownership of the leased asset are considered operating leases. Payments made under operating lease agreements are charged to results of operations on a straight-line basis over the rental period.

Finance leases

Lease agreements that substantially transfer all the risks and benefits of ownership of the leased assets to the Company are accounted for as finance leases. Accordingly, upon commencement of the lease, the asset, which is classified based on its nature, and its associated debt are recorded at the lower of the fair value of the leased asset or the present value of the lease payments. Finance lease payments are apportioned between the reduction of lease liability and the finance cost so that a constant interest rate is determined on the outstanding liability balance. Finance costs are charged to results of operations over the life of the agreement.

Financial assets and liabilities

n)

Financial assets

Initial recognition and measurement

Financial assets are classified, at initial recognition, as subsequently measured at amortized cost, fair value through other comprehensive income (OCI), and fair value through profit or loss.

The classification of financial assets at initial recognition depends on the financial asset’s contractual cash flow characteristics and the Company’s business model for managing them, with the exception of trade receivables that do not contain a significant financing component or for which the Company has applied the practical expedient, the Company initially measures a financial asset at its fair value plus, in the case of a financial asset not at fair value through profit or loss, transaction costs.

– Subsequent measurement

For purposes of subsequent measurement, financial assets are classified in four categories:

• Financial assets at amortized cost (debt instruments)

• Financial assets at fair value through OCI with recycling of cumulative gains and losses (debt instruments)

• Financial assets designated at fair value through OCI with no recycling of cumulative gains and losses upon derecognition (equity instruments)

• Financial assets at fair value through profit or loss

Financial assets at amortized cost (debt instruments)

The Company measures financial assets at amortized cost if both of the following conditions are met:

• The financial asset is held within a business model with the objective to hold financial assets in order to collect contractual cash flows, and

• The contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding

Financial assets at amortized cost are subsequently measured using the effective interest (EIR) method and are subject to impairment. Gains and losses are recognized in profit or loss when the asset is derecognized, modified or impaired.

The Company’s financial assets at amortized cost includes cash and cash equivalents, loans and receivables.

Financial assets at fair value through OCI with recycling of cumulative gains and losses (debt instruments)

The Company measures debt instruments at fair value through OCI if both of the following conditions are met:

• The financial asset is held within a business model with the objective of both holding to collect contractual cash flows and selling, and

• The contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding

For debt instruments at fair value through OCI, interest income, foreign exchange revaluation and impairment losses or reversals are recognized in the statements of profit or loss and computed in the same manner as for financial assets measured at amortized cost. The remaining fair value changes are recognized in OCI. Upon derecognition, the cumulative fair value change recognized in OCI is recycled to profit or loss.

Financial assets designated at fair value through OCI with no recycling of cumulative gains and losses upon derecognition (equity instruments)

Upon initial recognition, the Company can elect to classify irrevocably its equity investments as equity instruments designated at fair value through OCI when they meet the definition of equity under IAS 32 Financial Instruments: Presentation and are not held for trading. The classification is determined on an instrument by instrument basis.

Gains and losses on these financial assets are never recycled to profit or loss. Dividends are recognized as other income in the statements of profit or loss when the right of payment has been established, except when the Company benefits from such proceeds as a recovery of part of the cost of the financial asset, in which case, such gains are recorded in OCI. Equity instruments designated at fair value through OCI are not subject to impairment assessment.

Financial assets at fair value through profit or loss

Financial assets at fair value through profit or loss include financial assets held for trading, financial assets designated upon initial recognition at fair value through profit or loss, or financial assets mandatorily required to be measured at fair value. Financial assets are classified as held for trading if they are acquired for the purpose of selling or repurchasing in the near term. Derivatives, including separated embedded derivatives, are also classified as held for trading unless they are designated as effective hedging instruments. Financial assets with cash flows that are not solely payments of principal and interest are classified and measured at fair value through profit or loss, irrespective of the business model. Notwithstanding the criteria for debt instruments to be classified at amortized cost or at fair value through OCI, as described above, debt instruments may be designated at fair value through profit or loss on initial recognition if doing so eliminates, or significantly reduces, an accounting mismatch.

Financial assets at fair value through profit or loss are carried in the statements of financial position at fair value with net changes in fair value recognized in the consolidated statements of comprehensive income within “Valuation of derivatives, interest cost from labor obligations and other financial items”.

Derecognition of financial assets

A financial asset is primarily derecognized when:

• The rights to receive cash flows from the asset have expired, or

• The Company has transferred its rights to receive cash flows from the asset or has assumed an obligation to pay the received cash flows in full without material delay to a third party under a ‘pass-through’ arrangement; and either (a) the Company has transferred substantially all the risks and rewards of the asset, or (b) the Company has neither transferred nor retained substantially all the risks and rewards of the asset, but has transferred control of the asset

When the Company has transferred its rights to receive cash flows from an asset or has entered into a passthrough arrangement, it evaluates if, and to what extent, it has retained the risks and rewards of ownership. When it has neither transferred nor retained substantially all the risks and rewards of the asset, nor transferred control of the asset, the Company continues to recognize the transferred asset to the extent of its continuing involvement. In that case, the Company also recognizes an associated liability. The transferred asset and the associated liability are measured on a basis that reflects the rights and obligations that the Company has retained.

Impairment of financial assets

The Company recognizes an allowance for expected credit losses (ECLs) for all debt instruments not held at fair value through profit or loss. ECLs are based on the difference between the contractual cash flows due in accordance with the contract and all the cash flows that the Company expects to receive, discounted at an approximation of the original effective interest rate. The expected cash flows will include cash flows from the sale of collateral held or other credit enhancements that are integral to the contractual terms.

ECLs are recognized in two stages. For credit exposures for which there has not been a significant increase in credit risk since initial recognition, ECLs are provided for credit losses that result from default events that are possible within the next 12-months (a 12-month ECL). For those credit exposures for which there has been a significant increase in credit risk since initial recognition, a loss allowance is required for credit losses expected over the remaining life of the exposure, irrespective of the timing of the default (a lifetime ECL).

For some trade receivables and contract assets based on available information, the Company applies the simplified approach in calculating ECLs. Therefore, the Company does not track changes in credit risk, but instead recognizes a loss allowance based on lifetime ECLs at each reporting date. The Company has established a loss rate approach that is based on its historical credit loss experience, adjusted for forward-looking factors specific to the debtors and the economic environment.

Financial liabilities

Initial recognition

Financial liabilities are classified, at initial recognition, as financial liabilities at fair value through profit or loss, loans and borrowings, payables, or as derivatives designated as hedging instruments in an effective hedge, as appropriate.

All financial liabilities are recognized initially at fair value and, in the case of loans and borrowings and payables, net of directly attributable transaction costs.

The Company’s financial liabilities include trade and other payables, loans and borrowings including bank overdrafts, and derivative financial instruments.

— Subsequent measurement

The measurement of financial liabilities depends on their classification, as described below:

Financial liabilities at fair value through profit or loss financial liabilities at fair value through profit or loss include financial liabilities held for trading and financial liabilities designated upon initial recognition as at fair value through profit or loss. IFRS

Financial liabilities are classified as held for trading if they are incurred for the purpose of repurchasing in the near term. This category also includes derivative financial instruments entered into by the Company that are not designated as hedging instruments in hedge relationships as defined by IFRS 9. Separated embedded derivatives are also classified as held for trading unless they are designated as effective hedging instruments.

Gains or losses on liabilities held for trading are recognized in the statements of profit or loss.

Financial liabilities designated upon initial recognition at fair value through profit or loss are designated at the initial date of recognition, and only if the criteria in IFRS 9 are satisfied. The Company has not designated any financial liability as at fair value through profit or loss.

Loans and borrowings

After initial recognition, interest-bearing loans and borrowings are subsequently measured at amortized cost using the EIR method. Gains and losses are recognized in profit or loss when the liabilities are derecognized as well as through the EIR amortization process.

Amortized cost is calculated by taking into account any discount or premium on acquisition and fees or costs that are an integral part of the EIR. The EIR amortization is included as finance costs in the statements of profit or loss.

Derecognition of financial liabilities

A financial liability is derecognized when the obligation under the liability is discharged, cancelled or expires. When an existing financial liability is replaced by another from the same lender on substantially different terms, or the terms of an existing liability are substantially modified, such an exchange or modification is treated as the derecognition of the original liability and the recognition of a new liability. The difference in the respective carrying amounts is recognized in the statements of profit or loss.

Offsetting of financial instruments

Financial assets and financial liabilities are offset and the net amount is reported in the consolidated statements of financial position if there is a currently enforceable legal right to offset the recognized amounts and there is an intention to settle on a net basis, to realize the assets and settle the liabilities simultaneously.

Transactions in foreign currency

o)

Transactions in foreign currency are initially recorded at the prevailing exchange rate at the time of the related transactions. Foreign currency denominated assets and liabilities are subsequently translated at the prevailing exchange rate at the financial statements reporting date. Exchange differences determined from the transaction date to the time foreign currency denominated assets and liabilities are settled or translated at the financial statements reporting date are charged or credited to the results of operations.

In determining the spot exchange rate to use on initial recognition of the related asset, expense or income (or part of it) on the derecognition of a non-monetary asset or non-monetary liability relating to advance consideration, the date of the transaction is the date on which the Company initially recognizes the non-monetary asset or non-monetary liability arising from the advance consideration. If there are multiple payments or receipts in advance, the Company determines the transaction date for each payment or receipt of advance consideration.

The exchange rates used for the translation of foreign currencies against the Mexican peso are as follows:

		Average exchange rate						Closing exchange rate at December 31,
Country or Zone	Currency	2016		2017		2018		2017		2018
Argentina (1)	Argentine Peso (AR$)		1.2632		1.1489		0.7311		1.0610		0.5221
Brazil	Real (R$)		5.3868		5.9346		5.2937		5.9815		5.0797
Colombia	Colombian Peso (COP$)		0.0061		0.0064		0.0065		0.0066		0.0061
Guatemala	Quetzal		2.4548		2.5755		2.5591		2.6940		2.5440
U.S.A. (2)	US Dollar		18.6529		18.9400		19.2397		19.7867		19.6829
Uruguay	Uruguay Peso		0.6206		0.6606		0.6274		0.6869		0.6074
Nicaragua	Cordoba		0.6515		0.6307		0.6097		0.6428		0.6088
Honduras	Lempira		0.8109		0.8007		0.7994		0.8330		0.8031
Chile	Chilean Peso		0.0276		0.0292		0.0300		0.0322		0.0283
Paraguay	Guaraní		0.0033		0.0034		0.0034		0.0035		0.0033
Peru	Sol (PEN$)		5.5232		5.8054		5.8517		6.0976		5.8406
Dominican Republic	Dominican Peso		0.4048		0.3983		0.3876		0.4095		0.3898
Costa Rica	Colon		0.0338		0.0331		0.0332		0.0346		0.0322
European Union	Euro		20.6334		21.3649		22.7101		23.7539		22.5586
Bulgaria	Lev		10.5483		10.9223		11.6110		12.1406		11.5327
Belarus	New Belarusian Ruble		9.3929		9.8087		9.4451		9.9882		9.1319
Croatia	Croatian Kuna		2.7392		2.8619		3.0613		3.1954		3.0435
Macedonia	Macedonian Denar		0.3350		0.3471		0.3688		0.3861		0.3667
Serbia	Serbian Denar		0.1676		0.1762		0.1920		0.2009		0.1907

(1) Year-end rates are used for the translation of revenues and expenses if IAS 29 “Financial Reporting in Hyperinflationary Economies” is applied.

Financial reporting in hyperinflationary economies

Financial statements of Argentina subsidiaries are restated before translation to the reporting currency of the Company and before consolidation in order to reflect the same value of money for all items. Items recognized in the statements of financial position which are not measured at the applicable year-end measuring unit are restated based on the general price index. All non-monetary items measured at cost or amortized cost is restated for the changes in the general price index from the date of transaction or the last hyperinflationary calculation to the reporting date. Monetary items are not restated. All items of shareholders’ equity are restated for the changes in the general price index since their addition or the last hyperinflationary calculation until the end of the reporting period. All items of comprehensive income are restated for the change in a general price index from the date of initial recognition to the reporting date. Gains and losses resulting from the net-position of monetary items are reported in the consolidated statements of operations in financial result in exchange differences. In accordance with IFRS prior year financial statements were not restated.

(2) Includes U.S.A., Ecuador, El Salvador, Puerto Rico and Panama.

As of April 9, 2019, the exchange rate between the US dollar and the Mexican Peso was $18.9701.

Accounts payable, accrued liabilities and provisions

p)

Liabilities are recognized whenever (i) the Company has current obligations (legal or assumed) resulting from a past event, (ii) when it is probable the obligation will give rise to a future cash disbursement for its settlement, and (iii) the amount of the obligation can be reasonably estimated.

When the effect of the time value of money is significant, the amount of the liability is determined as the present value of the expected disbursements to settle the obligation. The discount rate is determined on a pre-tax basis and reflects current market conditions at the financial statements´ reporting date and, where appropriate, the risks specific to the liability. Where discounting is used, an increase in the liability is recognized as finance expense.

Contingent liabilities are recognized only when it is probable they will give rise to a future cash disbursement for their settlement.

Also, contingencies are only recognized when they will generate a loss.

Employee benefits

q)

The Company has defined benefit pension plans for its subsidiaries Puerto Rico Telephone Company, Teléfonos de Mexico, Claro Brasil, and Telekom Austria. Claro Brasil also has medical plans and defined contribution plans and Telekom Austria provides retirement benefits to its employees under a defined contribution plan. The Company recognizes the costs of these plans based upon independent actuarial computations and are determined using the projected unit credit method. The latest actuarial computations were prepared as of December 31, 2018.

Mexico

Mexican subsidiaries have the obligation to pay seniority premiums to personnel based on the Mexican Federal labor law which also establishes the obligation to make certain payments to personnel who cease to provide services under certain circumstances. Pensions (for Telmex) and seniority premiums are determined based on the salary of employees in their final year of service, the number of years worked at and their age at the moment of retirement.

The costs of pensions, seniority premiums and severance benefits, are recognized based on calculations by independent actuaries using the projected unit credit method using financial hypotheses, net of inflation.

Telmex has established an irrevocable trust fund and makes annual contributions to that fund.

Puerto Rico

In Puerto Rico, the Company has noncontributing pension plans for full-time employees, which are tax qualified as they meet Employee Retirement Income Security Act of 1974 requirements.

The pension benefit is composed of two elements:

(i) An employee receives an annuity at retirement if they meet the rule of 85 (age at retirement plus accumulated years of service). The annuity is calculated by applying a percentage times years of services to the last three years of salary.

(ii) The second element is a lump-sum benefit based on years of service ranging from 9 to 12 months of salary. Health care and life insurance benefits are also provided to retirees under a separate plan (post-retirement benefits).

Brazil

Claro Brasil provides a defined benefit plan and post-retirement medical assistance plan, and a defined contribution plan, through a pension fund that supplements the government retirement benefit for certain employees.

Under the defined benefit plan, the Company makes monthly contributions to the pension fund equal to 17.5% of the employee’s aggregate salary. In addition, the Company contributes a percentage of the aggregate salary base for funding the post-retirement medical assistance plan for the employees who remain in the defined benefit plan. Each employee makes contributions to the pension fund based on age and salary. All newly hired employees automatically adhere to the defined contribution plan and no further admittance to the defined benefit plan is allowed. For the defined contribution plan, see Note 17.

Austria

Telekom Austria provides retirement benefits to its employees under defined contribution and defined benefit plans.

The Company pays contributions to publicly or privately administered pension or severance insurance plans on mandatory or contractual basis. Once the contributions have been paid, the Company has no further payment obligations. The regular contributions are recognized as employee expenses in the year in which they are due.

All other employee benefit obligations provided in Austria are unfunded defined benefit plans for which the Company records provisions which are calculated using the projected unit credit method. The future benefit obligations are measured using actuarial methods on the basis of an appropriate assessment of the discount rate, rate of employee turnover, rate of compensation increase and rate of increase in pensions.

For severance and pensions, the subsidiary recognizes actuarial gains and losses in other comprehensive income. The re-measurement of defined benefit plans relates to actuarial gains and losses only as Telekom Austria holds no plan assets. Interest expense related to employee benefit obligations is reported in “Valuation of derivatives, interests cost from labor obligation and other financial items, net” in the statements of comprehensive income.

Other subsidiaries

For the rest of the Company’s subsidiaries, there are no defined benefit plans or compulsory defined contribution structures. However, certain subsidiaries make contributions to national pension, social security and severance plans in accordance with the percentages and rates established by the applicable social security and labor laws of each country. Such contributions are made to the entities designated by the countries legislation and are recorded as direct labor expenses in the consolidated statements of comprehensive income as they are incurred.

Remeasurements of defined benefit plans, comprising of actuarial gains and losses, the effect of the asset ceiling, excluding net interest and the return on plan assets (excluding net interest), are recognized immediately in the consolidated statements of financial position with a corresponding debit or credit to retained earnings through OCI in the period in which they occur. Re-measurements are not reclassified to profit or loss in subsequent periods.

Past service costs are recognized in profit or loss on the earlier of:

(i) The date of the plan amendment or curtailment, and

(ii) The date that the Company recognizes restructuring-related costs

Net interest on liability for defined benefits is calculated by applying the discount rate to the net defined benefit liability or asset and it is recognized in the “valuation of derivatives, interest cost from labor obligations and other financial items” in the consolidated statements of comprehensive income. The Company recognizes the changes in the net defined benefit obligation under “Cost of sales and services” and “Commercial, administrative and general expenses” in the consolidated statements of comprehensive income.

Paid absences

The Company recognizes a provision for the cost of paid absences, such as vacation time, based on the accrual method.

Employee profit sharing

r)

Employee profit sharing is paid by certain subsidiaries of the Company to its eligible employees. The Company has employee profit sharing in Mexico, Ecuador and Peru. In Mexico, employee profit sharing is computed at the rate of 10% on the individual subsidiaries taxable base adjusted for employee profit sharing purposes as provided by law.

Employee profit sharing is presented as an operating expense in the consolidated statements of comprehensive income.

Taxes

s)

Income taxes

Current income tax payable is presented as a short-term liability, net of prepayments made during the year.

Deferred income tax is determined using the liability method based on the temporary differences between the tax values of the assets and liabilities and their book values at the consolidated financial statements reporting date.

Deferred tax assets and liabilities are measured using the tax rates that are expected to be in effect in the period when the asset will materialize or the liability will be settled, based on the enacted tax rates (and tax legislation) that have been enacted or substantially enacted at the financial statements reporting date. The value of deferred tax assets is reviewed by the Company at each financial statements reporting date and is reduced to the extent that it is more likely that the Company will not have sufficient future tax profits to allow for the realization of all or a part of its deferred tax assets. Unrecognized deferred tax assets are revalued at each financial statements reporting date and are recognized when it is more likely that there will be sufficient future tax profits to allow for the realization of these assets.

Deferred taxes relating to items recognized in Other Comprehensive Income are recognized together with the concept that generated such deferred taxes. Deferred taxes consequence on unremitted earnings from subsidiaries and associates are considered as temporary differences, when the timing of the reversal of the temporary differences can be controlled and it is probable that the temporary differences will not reverse in the foreseeable future. Taxes withheld on remitted foreign earnings are creditable against Mexican taxes, thus to the extent that a remittance is to be made, the deferred tax would be limited to the incremental difference between the Mexican tax rate and the rate of the remitting country. As of December 31, 2017 and 2018, the Company has not provided for any deferred taxes related to unremitted foreign earnings.

The Company offsets tax assets and liabilities if it has a legally enforceable right to set off current tax assets and current tax liabilities and the deferred tax assets and deferred tax liabilities relate to income taxes levied by the same tax authority.

Sales tax

Revenues, expenses and assets are recognized net of the amount of sales tax, except:

• When the sales tax incurred on a purchase of assets or services is not recoverable from the taxation authority, in which case, the sales tax is recognized as part of the cost of acquisition of the asset or as part of the expense item, as applicable.

• Receivables and payables that are stated with the amount of sales tax included.

The net amount of sales tax recoverable from, or payable to, the tax authorities is included as part of the current receivables or payables in the consolidated statements of financial position unless they are due in more than a year in which case they are classified as non-current.

Advertising

t)

Advertising expenses are recognized as incurred. For the years ended December 31, 2016, 2017 and 2018, advertising expenses were Ps. 28,180,538, Ps. 28,718,563 and Ps. 26,255,952 , respectively, and are presented in the consolidated statements of comprehensive income in the caption “Commercial, administrative and general expenses”.

Earnings per share

u)

Basic and diluted earnings per share are determined by dividing net profit of the year by the weighted-average number of shares outstanding during the year. In determining the weighted average number of outstanding shares, shares repurchased by the Company have been excluded.

Financial risks

v)

The main risks associated with the Company’s financial instruments are: (i) liquidity risk, (ii) market risk (foreign currency exchange risk and interest rate risk) and (iii) credit risk and counterparty risk. The Board of Directors approves the policies submitted by management to mitigate these risks.

i) Liquidity risk

Liquidity risk is the risk that the Company may not meet its financial obligations associated with financial instruments when they are due. The Company’s financial obligations and commitments are included in Notes 14 and 16.

ii) Market risk

The Company is exposed to certain market risks derived from changes in interest rates and fluctuations in exchange rates of foreign currencies. The Company’s debt is denominated in foreign currencies, mainly in US dollars and euros, other than its functional currency. In order to reduce the risks related to fluctuations in the exchange rate of foreign currency, the Company uses derivative financial instruments such as cross-currency swaps and forwards to adjust exposures resulting from foreign exchange currency. The Company does not use derivatives to hedge the exchange risk arising from having operations in different countries.

Additionally, the Company occasionally uses interest rate swaps to adjust its exposure to the variability of the interest rates or to reduce their financing costs. The Company’s practices vary from time to time depending on judgments about the level of risk, expectations of change in the movements of interest rates and the costs of using derivatives. The Company may terminate or modify a derivative financial instrument at any time. See Note 7 for disclosure of the fair value of derivatives as of December 31, 2017 and 2018.

iii) Credit risk

Credit risk represents the loss that could be recognized in case the counterparties fail to comply with their contractual obligations.

The financial instruments that potentially represent concentrations of credit risk are cash and short-term deposits, trade accounts receivable and financial instruments related to debt and derivatives. The Company’s policy is designed in order to limit its exposure to any one financial institution; therefore, the Company’s financial instruments are contracted with several different financial institutions located in different geographic regions.

The credit risk in accounts receivable is diversified because the Company has a broad customer base that is geographically dispersed. The Company continuously evaluates the credit conditions of its customers and generally does not require collateral to guarantee collection of its accounts receivable. The Company monitors on a monthly basis its collection cycle to avoid deterioration of its results of operations.

A portion of the Company’s cash surplus is invested in short- term deposits with financial institutions with high credit ratings.

iv) Sensitivity analysis for market risks

The Company uses sensitivity analyses to measure the potential losses based on a theoretical increase of 100 basis points in interest rates and a 5% fluctuation in exchange rates:

Interest rate

In the event that the Company’s agreed-upon interest rates at December 31, 2018 increased/(decreased) by 100 basis points, the increase in net interest expense would increase/(decrease) by Ps. 32,136,984 and Ps. (31,773,439), respectively.

Exchange rate fluctuations

Should the Company’s debt at December 31, 2018 of Ps. 638,922,453, suffer a 5% increase/(decrease) in exchange rates, the debt would increase/(decrease) by Ps. 3,165,958 and Ps. (10,940,798), respectively.

Derivative financial instruments

w)

Derivative financial instruments are recognized in the consolidated statements of financial position at fair value. Valuations obtained by the Company are compared against those of the financial institutions with which the agreements are entered into, and it is the Company’s policy to compare such fair value to a valuation provided by an independent pricing provider in case of discrepancies. Changes in the fair value of derivatives that do not qualify as hedging instruments are recognized immediately in the line “Valuation of derivatives, interest cost from labor obligations and other financial items, net”.

The Company is exposed to interest rate and foreign currency risks, which tries to mitigate through a controlled risk management program that includes the use of derivative financial instruments. The Company principally uses to offset the risk of exchange rate and interest rate fluctuations. Additionally, for the years ended December 31, 2017 certain of the Company’s derivative financial instruments had been designated, and had qualified, as cash flow hedges. The effective portion of gains or losses on the cash flow derivatives is recognized in equity under the heading “Effect for fair value of derivatives”, and the ineffective portion is charged to results of operations of the period.

Current versus non-current classification

x)

The Company presents assets and liabilities in its consolidated statements of financial position based on current/non-current classification.

An asset is current when it is either:

(i) Expected to be realized or intended to be sold or consumed in the normal operating cycle.

(ii) Held primarily for the purpose of trading.

(iii) Expected to be realized within twelve months after the reporting period.

(iv) Cash and cash equivalents unless restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period.

A liability is current when:

• It is expected to be settled in the normal operating cycle.

• It is held primarily for the purpose of trading.

• It is due to be settled within twelve months after the reporting period.

• There is no unconditional right to defer the settlement of the liability for at least twelve months after the reporting period.

The Company classifies all other assets and liabilities, including deferred tax assets and liabilities, as non-current.

Presentation of consolidated statements of comprehensive income

y)

The  costs and expenses shown in the consolidated statements of comprehensive income are presented in combined manner (based on both their function and nature), which allows a better understanding of the components of the Company’s operating income. This classification allows a comparison to the telecommunications industry.

The Company presents operating income in its consolidated statements of comprehensive income since it is a key indicator of the Company’s performance. Operating income represents operating revenues less operating costs and expenses.

The employee benefits expense recognized for the years ended December 31, 2016, 2017 and 2018 of Ps. 46,759,415, Ps. 48,696,331 and Ps. 47,671,143, respectively is presented as “Cost of sales and services” and of Ps. 63,691,855, Ps. 66,920,537 and Ps. 67,936,876, respectively is presented in “Commercial, administrative and general expenses”.

Operating segments

z) Operating segments

Segment information is presented based on information used by management in its decision-making processes. Segment information is presented based on the geographic areas in which the Company operates.

The management of the Company is responsible for making decisions regarding the resources to be allocated to the Company’s different segments, as well as evaluating the performance of each segment. Intersegment revenues and costs, intercompany balances as well as investments in shares in consolidated entities are eliminated upon consolidation and reflected in the “eliminations” column in Note 22.

None of the segments records revenue from transactions with a single external customer amounting to 10% or more of the revenues.

Convenience translation

Aa)

At December 31, 2018, amounts in U.S. dollars have been included in the consolidated financial statements solely for the convenience of the reader and amounts this translation is not accordance with IFRS have been translated from Mexican pesos at December 31, 2018 at an exchange rate of Ps. 19.6829 per U.S. dollar, which was the exchange rate at that date. Such translation should not be construed as a representation that the Mexican peso can be converted to U.S. dollars at the exchange rate in effect on December 31, 2018 or any other exchange rate.

Significant accounting judgments, estimates and assumptions

Ab)

In preparing its consolidated financial statements, the Company makes estimates concerning a variety of matters. Some of these matters are highly uncertain, and its estimates involve judgments it makes based on the available information. In the discussion below, the Company has identified several of these matters for which its financial statements would be materially affected if either (1) the Company uses different estimates that it could have reasonably used or (2) in the future América Móvil changes its estimates in response to changes that are reasonably likely to occur.

The following discussion addresses only those estimates that the Company considers most important based on the degree of uncertainty and the likelihood of a material impact had it used a different estimate. There are many other areas in which the Company uses estimates about uncertain matters, but the reasonably likely effect of changed or different estimates is not material to the financial presentation for those other areas.

Estimated useful lives of plant, property and equipment

The Company currently depreciates most of its network infrastructure based on an estimated useful life determined upon the expected particular conditions of operation and maintenance in each of the countries in which it operates. The estimates are based on AMX’s historical experience with similar assets, anticipated technological changes and other factors, taking into account the practices of other telecommunications companies. The Company reviews estimated useful lives each year to determine, for each particular class of assets, whether they should be changed. The Company may shorten/extend the estimated useful life of an asset class in response to technological changes, changes in the market or other developments. This results in increased/decreased depreciation expense. See Notes 2j) and 10.

Impairment of Long-Lived Assets

The Company has large amounts of long-lived assets, including property, plant and equipment, intangible assets, investments in affiliates and goodwill on its consolidated statements of financial position. The Company is required to test long-lived assets for impairment when circumstances indicate a potential impairment or, in some cases, at least on an annual basis. The impairment analysis for long-lived assets requires the Company to estimate the recoverable amount of the asset, which is the higher of its fair value (minus any disposal costs) and its value in use. To estimate the fair value of a long-lived asset, the Company typically takes into account recent market transactions or, if no such transactions can be identified, the Company uses a valuation model that requires making certain assumptions and estimates. Similarly, to estimate the value in use of long-lived assets, the Company typically makes various assumptions about the future prospects for the business to which the asset relates, considers market factors specific to that business and estimates future cash flows to be generated by that business. Based on this impairment analysis, including all assumptions and estimates related thereto, as well as guidance provided by IFRS relating to the impairment of long-lived assets different assumptions and estimates could materially impact the Company’s reported financial results. More conservative assumptions of the anticipated future benefits from these businesses could result in impairment charges, which would decrease net income and result in lower asset values on the consolidated statements of financial position. Conversely, less conservative assumptions could result in smaller or no impairment charges, higher net income and higher asset values. The key assumptions used to determine the recoverable amount for the Company’s CGUs, are further explained in Notes 2l), 10 and 11.

Deferred Income Taxes

The Company is required to estimate its income taxes in each of the jurisdictions in which it operates. This process involves the jurisdiction-by-jurisdiction estimation of actual current tax exposure and the assessment of temporary differences resulting from the differing treatment of certain items, such as accruals and amortization, for tax and financial reporting purposes, as well as net operating loss carry-forwards and other tax credits. These items result in deferred tax assets and liabilities as discussed in Note 2 s). The analysis is based on estimates of taxable income in the jurisdictions in which the Company operates and the period on which the deferred tax assets and liabilities will be recovered or settled. If actual results differ from these estimates, or the Company adjusts these estimates in future periods, its financial position and results of operations may be materially affected.

In assessing the future realization of deferred tax assets, the Company considers future taxable income, ongoing planning strategies and future results in its operations. In the event that the estimates of projected future taxable income are lowered, or changes in current tax regulations are enacted that would impose restrictions on the timing or extent of the ability to utilize the tax benefits of net operating loss carry-forwards in the future, an adjustment to the recorded amount of deferred tax assets would be made, with a related charge to income. See Note 13.

Accruals

Accruals are recorded when, at the end of the period, the Company has a present obligation as a result of past events, whose settlement requires an outflow of resources that is considered probable and can be measured reliably. This obligation may be legal or constructive, arising from, but not limited to, regulation, contracts, common practice or public commitments, which have created a valid expectation for third parties that the Company will assume certain responsibilities. The amount recorded is the best estimation performed by the Company’s management in respect of the disbursement that will be required to settle the obligations, considering all the information available at the date of the financial statements, including the opinion of external experts, such as legal advisors or consultants. Accruals are adjusted to account for changes in circumstances for ongoing matters and the establishment of additional accruals for new matters.

If the Company is unable to reliably measure the obligation, no accrual is recorded and information is then presented in the notes to its consolidated financial statements. Because of the inherent uncertainties in these estimations, actual expenditures may be different from the originally estimated amount recognized. “See Note 15.”

The Company is subject to various claims and contingencies related to tax, labor and legal proceedings as described in Note 16c).

Labor Obligations

The Company recognizes liabilities on its consolidated statements of financial position and expenses in its statements of comprehensive income to reflect its obligations related to its post-retirement seniority premiums, pension and retirement plans in the countries in which it operates and offer defined contribution and benefit pension plans. The amounts the Company recognizes are determined on an actuarial basis that involves estimations and accounts for post-retirement and termination benefits.

The Company uses estimates in four specific areas that have a significant effect on these amounts: (i) the rate of return the Company assumes its pension plans will earn on its investments, (ii) the salaries increase rate that the Company assumes it will observe in future years, (iii) the discount rates that the Company uses to calculate the present value of its future obligations and (iv) the expected inflation rate. The assumptions applied are further disclosed in Note 17. These estimates are determined based on actuarial studies performed by independent experts using the projected unit-credit method.

Retrospective adjustment

ac)

Te following amounts in the consolidated statements of comprehensive income for the years ended December 31, 2016 and 2017, have been retrospectively reclassified to conform to the presentation for the year ended December 31, 2018.

In the Consolidated Statements of Comprehensive Income:

	As reported 2016		Retrospective reclassification			2016 As adjustments
Operating revenues:
Mobile voice services	Ps.	242,302,380	Ps.	(242,302,380	)	Ps.	—
Fixed voice services		95,299,154		(95,299,154	)		—
Mobile data services		256,936,895		(256,936,895	)		—
Fixed data services		126,278,206		(126,278,206	)		—
Pay television		78,268,778		(78,268,778	)		—
Other related services		32,799,952		(32,799,952	)		—
Revenues services		—		831,885,365			831,885,365
	Ps.	831,885,365	Ps.	—		Ps.	831,885,365

	As reported 2017		Retrospective reclassification			2017 As adjustments
Operating revenues:
Mobile voice services	Ps.	221,751,600	Ps.	(221,751,600	)	Ps.	—
Fixed voice services		89,856,743		(89,856,743	)		—
Mobile data services		308,526,994		(308,526,994	)		—
Fixed data services		139,277,613		(139,277,613	)		—
Pay television		86,882,606		(86,882,606	)		—
Other related services		32,115,767		(32,115,767	)		—
Revenues services		—		878,411,323			878,411,323
	Ps.	878,411,323	Ps.	—		Ps.	878,411,323

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Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices (Tables)

12 Months Ended

Dec. 31, 2018

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Schedule of Effect of Adoption of IFRS 15

The effect of adopting IFRS 15 as of January 1, 2018 was, as follows:

	Reference		Increase
Assets:
Subscribers, distributors, recoverable taxes, contract assets and other, net		(a), (b), (c)	Ps.	31,261,436
Liabilities:
Current liabilities		(c)	Ps.	562,651
Deferred income taxes		(d)		8,725,841
			Ps.	9,288,492
Equity:
Retained earnings		(a), (b), (c), (d)		21,454,504
Non-controlling interests				518,440
Total equity				21,972,944
Total liabilities and equity			Ps.	31,261,436

Schedule of Impact of Adoption IFRS 15 on Company's Financial Statements

Set out below are, the impacts of adopting IFRS 15 on the Company´s consolidated financial statements for the year ended December 31, 2018:

	Reference		As reported			Figures without adoption of IFRS 15			Adjustments
Operating revenues:
Revenues services		(a), (b)	Ps.	863,647,642		Ps.	881,530,167		Ps.	(17,882,525	)
Sales of equipment		(a), (b)		174,560,039			158,721,765			15,838,274
				1,038,207,681			1,040,251,932			(2,044,251	)
Operating costs and expenses:
Cost of sales and services			Ps.	508,822,430		Ps.	509,100,174		Ps.	(277,744	)
Commercial, administrative and general and other expenses		(c)		234,115,500			240,010,631			(5,895,131	)
Depreciation and amortization				155,712,580			155,712,580			—
				898,650,510			904,823,385			(6,172,875	)
				139,557,171			135,428,547			4,128,624
Financial items, net				38,563,536			38,356,359			207,177
Equity interest in net result of associated companies				267			267			—
Income tax		(d)		46,477,079			45,496,698			980,381
Non-controlling interests				(1,950,626	)		(1,950,626	)		—
Net profit for the year			Ps.	52,566,197		Ps.	49,625,131		Ps.	2,941,066

	Reference		As reported		Balances without adoption of IFRS 15		Adjustments
Assets:
Current assets:
Cash and cash equivalents and equity investments at fair value			Ps.	70,675,896	Ps.	70,675,896	Ps.	—
Subscribers, distributors, recoverable taxes, contract assets and other, net		(a), (b), (c)		216,226,920		185,303,634		30,923,286
Other current assets, net				62,152,708		62,152,708		—
Total current assets				349,055,524		318,132,238		30,923,286
Non-current assets:
Property, plant and equipment, net				640,000,720		640,000,720		—
Intangibles and other assets, net				424,485,276		424,485,276		—
Subscribers, distributors, recoverable taxes, contract assets and other, net		(a), (b), (c)		15,681,872		10,244,609		5,437,263
Total assets			Ps.	1,429,223,392	Ps.	1,392,862,843	Ps.	36,360,549
Liabilities and equity:
Current liabilities:
Short-term debt and current portion of long-term debt			Ps.	96,230,634	Ps.	96,230,634	Ps.	—
Accounts payable and other liabilities				338,116,412		337,448,940		667,472
Deferred revenues				32,743,843		32,315,690		428,153
Total current liabilities				467,090,889		465,995,264		1,095,625
Non-current-liabilities:
Long-term debt				542,691,819		542,691,819		—
Deferred income taxes		(d)		24,573,441		15,382,500		9,190,941
Other liabilities				148,994,821		148,994,821		—
Total liabilities				1,183,350,970		1,173,064,404		10,286,566
Total equity		(d)		245,872,422		219,798,439		26,073,983
Total liabilities and equity			Ps.	1,429,223,392	Ps.	1,392,862,843	Ps.	36,360,549

Schedule of Effect of Adoption of IFRS 9 in Retained Earnings and Other Components of Equity

The effect of adopting IFRS 9 as of January 1, 2018 was, as follows:

	Adjustments		January 1, 2018
Assets
Trade receivables		(a)	Ps.	(2,400,783	)
Deferred tax assets		(b)		544,628
Total assets			Ps.	(1,856,155	)
Equity
Retained earnings		(a), (b)	Ps.	(1,856,155	)
Total adjustment on equity			Ps.	(1,856,155	)

Schedule of Impact in Consolidated Financial Statements upon Application of Hyperinflation

The main impact in the consolidated financial statements of the Company in 2018 of applying hyperinflationary accounting under IAS 29 are shown below:

	Impact of the application of hyperinflation adjustments in 2018
Impact in:
Operating revenues		Ps. 6,286,140
Operating loss		(1,423,252	)
Financial loss		(1,289,317	)
Gain on net monetary positions		4,429,145
Income tax		(770,928	)
Net profit for the year		945,647
Current assets		1,866,674
Non-current assets		19,796,073
Total liabilities		4,890,166
Total equity (i)		16,772,581

(i) This total includes the initial effect of hyperinflation of Ps. 15,826,934 and the net effect on results due to the hyperinflation of the year of Ps. 945,647.

Summary of Equity Interest in Most Significant Subsidiaries

The equity interest in the most significant subsidiaries at December 31, 2017 and 2018 is as follows:

Company name	Country		Equity interest at December 31
			2017			2018
Subsidiaries:
América Móvil B.V. a)		Netherlands		100.0	%		100.0	%
Compañía Dominicana de Teléfonos, S.A. (“Codetel”) b)		Dominican Republic		100.0	%		100.0	%
Sercotel, S.A. de C.V. a)		Mexico		100.0	%		100.0	%
Radiomóvil Dipsa, S.A. de C.V. and subsidiaries (“Telcel”) b)		Mexico		100.0	%		100.0	%
Puerto Rico Telephone Company, Inc. b)		Puerto Rico		100.0	%		100.0	%
Servicios de Comunicaciones de Honduras, S.A. de C.V. (“Sercom Honduras”) b)		Honduras		100.0	%		100.0	%
TracFone Wireless, Inc. (“TracFone”) b)		USA		100.0	%		100.0	%
Claro S.A. (Claro Brasil) b)		Brazil		97.7	%		98.2	%
Telecomunicaciones de Guatemala, S.A. (“Telgua”) b)		Guatemala		99.3	%		99.3	%
Empresa Nicaragüense de Telecomunicaciones, S.A. (“Enitel”) b)		Nicaragua		99.6	%		99.6	%
Compañía de Telecomunicaciones de El Salvador, S.A. de C.V. (“CTE”) b)		El Salvador		95.8	%		95.8	%
Comunicación Celular, S.A. (“Comcel”) b)		Colombia		99.4	%		99.4	%
Telmex Colombia, S.A. b)		Colombia		99.3	%		99.3	%
Consorcio Ecuatoriano de Telecomunicaciones, S.A. (“Conecel”) b)		Ecuador		100.0	%		100.0	%
AMX Argentina, S.A. b)		Argentina		100.0	%		100.0	%
AMX Paraguay, S.A. b)		Paraguay		100.0	%		100.0	%
AM Wireless Uruguay, S.A. b)		Uruguay		100.0	%		100.0	%
Claro Chile, S.A. b)		Chile		100.0	%		100.0	%
América Móvil Perú, S.A.C b)		Peru		100.0	%		100.0	%
Claro Panamá, S.A. b)		Panamá		100.0	%		100.0	%
Teléfonos de México, S.A.B. de C.V. b)		Mexico		98.8	%		98.8	%
Telekom Austria AG b)		Austria		51.0	%		51.0	%

a) Holding companies

b) Operating companies of mobile and fixed services

Summary of Annual Depreciation Rates

Annual depreciation rates are as follows:

Network infrastructure	5	%-33%
Buildings and leasehold improvement	2	%-33%
Other assets	10	%-50%

Summary of Most Significant Forward Looking Estimates Used for Impairment Evaluations

The most significant forward-looking estimates used for the 2017 and 2018 impairment evaluations are shown below:

	Average margin on EBITDA	Average margin on CAPEX	Average pre-tax discount rate (WACC)
2017:
Europe (7 countries)	25.59% - 52.46%	7.34% - 14.97%	9.06% - 19.04%
Brazil (fixed line, wireless and TV)	35.28%	22.13%	11.71%
Puerto Rico	23.31%	8.31%	4.42%
Dominican Republic	45.79%	15.55%	19.23%
Mexico (fixed line and wireless)	35.48%	8.72%	16.13%
Ecuador	37.83%	10.07%	23.57%
Peru	29.64%	16.75%	13.61%
El Salvador	40.36%	17.99%	25.14%
Chile	22.04%	12.45%	6.15%
Colombia	41.93%	19.88%	19.06%
Other countries	9.16% - 48.18%	0.43% - 23.43%	7.89% - 24.28%

	Average margin on EBIDTA		Average margin on CAPEX		Average pre-tax discount rate (WACC)las
2018:
Europe (7 countries)		22.13% - 41.51%		8.13% - 19.40%		8.36% - 22.08%
Brazil (fixed line, wireless and TV)		36.43%		21.88%		10.38%
Puerto Rico		23.86%		9.89%		4.81%
Dominican Republic		48.64%		18.43%		17.66%
Mexico (fixed line and wireless)		36.33%		7.93%		16.30%
Ecuador		39.83%		11.26%		24.45%
Peru		30.29%		19.95%		11.52%
El Salvador		45.36%		22.61%		18.01%
Chile		25.91%		14.99%		6.62%
Colombia		45.01%		17.14%		20.29%
Other countries		7.90% - 45.91%		0.61% - 23.96%		9.97% - 31.63%

Summary of Exchange Rates Used forTranslation of Foreign Currencies

The exchange rates used for the translation of foreign currencies against the Mexican peso are as follows:

		Average exchange rate						Closing exchange rate at December 31,
Country or Zone	Currency	2016		2017		2018		2017		2018
Argentina (1)	Argentine Peso (AR$)		1.2632		1.1489		0.7311		1.0610		0.5221
Brazil	Real (R$)		5.3868		5.9346		5.2937		5.9815		5.0797
Colombia	Colombian Peso (COP$)		0.0061		0.0064		0.0065		0.0066		0.0061
Guatemala	Quetzal		2.4548		2.5755		2.5591		2.6940		2.5440
U.S.A. (2)	US Dollar		18.6529		18.9400		19.2397		19.7867		19.6829
Uruguay	Uruguay Peso		0.6206		0.6606		0.6274		0.6869		0.6074
Nicaragua	Cordoba		0.6515		0.6307		0.6097		0.6428		0.6088
Honduras	Lempira		0.8109		0.8007		0.7994		0.8330		0.8031
Chile	Chilean Peso		0.0276		0.0292		0.0300		0.0322		0.0283
Paraguay	Guaraní		0.0033		0.0034		0.0034		0.0035		0.0033
Peru	Sol (PEN$)		5.5232		5.8054		5.8517		6.0976		5.8406
Dominican Republic	Dominican Peso		0.4048		0.3983		0.3876		0.4095		0.3898
Costa Rica	Colon		0.0338		0.0331		0.0332		0.0346		0.0322
European Union	Euro		20.6334		21.3649		22.7101		23.7539		22.5586
Bulgaria	Lev		10.5483		10.9223		11.6110		12.1406		11.5327
Belarus	New Belarusian Ruble		9.3929		9.8087		9.4451		9.9882		9.1319
Croatia	Croatian Kuna		2.7392		2.8619		3.0613		3.1954		3.0435
Macedonia	Macedonian Denar		0.3350		0.3471		0.3688		0.3861		0.3667
Serbia	Serbian Denar		0.1676		0.1762		0.1920		0.2009		0.1907

(1) Year-end rates are used for the translation of revenues and expenses if IAS 29 “Financial Reporting in Hyperinflationary Economies” is applied.

Financial reporting in hyperinflationary economies

Financial statements of Argentina subsidiaries are restated before translation to the reporting currency of the Company and before consolidation in order to reflect the same value of money for all items. Items recognized in the statements of financial position which are not measured at the applicable year-end measuring unit are restated based on the general price index. All non-monetary items measured at cost or amortized cost is restated for the changes in the general price index from the date of transaction or the last hyperinflationary calculation to the reporting date. Monetary items are not restated. All items of shareholders’ equity are restated for the changes in the general price index since their addition or the last hyperinflationary calculation until the end of the reporting period. All items of comprehensive income are restated for the change in a general price index from the date of initial recognition to the reporting date. Gains and losses resulting from the net-position of monetary items are reported in the consolidated statements of operations in financial result in exchange differences. In accordance with IFRS prior year financial statements were not restated.

(2) Includes U.S.A., Ecuador, El Salvador, Puerto Rico and Panama.

Summary of Retrospective Reclassification of Financial Statements

Thefollowing amounts in the consolidated statements of comprehensive income for the years ended December 31, 2016 and 2017, have been retrospectively reclassified to conform to the presentation for the year ended December 31, 2018.

In the Consolidated Statements of Comprehensive Income:

	As reported 2016		Retrospective reclassification			2016 As adjustments
Operating revenues:
Mobile voice services	Ps.	242,302,380	Ps.	(242,302,380	)	Ps.	—
Fixed voice services		95,299,154		(95,299,154	)		—
Mobile data services		256,936,895		(256,936,895	)		—
Fixed data services		126,278,206		(126,278,206	)		—
Pay television		78,268,778		(78,268,778	)		—
Other related services		32,799,952		(32,799,952	)		—
Revenues services		—		831,885,365			831,885,365
	Ps.	831,885,365	Ps.	—		Ps.	831,885,365

	As reported 2017		Retrospective reclassification			2017 As adjustments
Operating revenues:
Mobile voice services	Ps.	221,751,600	Ps.	(221,751,600	)	Ps.	—
Fixed voice services		89,856,743		(89,856,743	)		—
Mobile data services		308,526,994		(308,526,994	)		—
Fixed data services		139,277,613		(139,277,613	)		—
Pay television		86,882,606		(86,882,606	)		—
Other related services		32,115,767		(32,115,767	)		—
Revenues services		—		878,411,323			878,411,323
	Ps.	878,411,323	Ps.	—		Ps.	878,411,323

XML

Accounts receivable from subscribers, distributors, recoverable taxes contractual assets and other, net (Tables)

12 Months Ended

Dec. 31, 2018

Statement [LineItems]

Summary of Analysis of Accounts Receivable by Component

a) An analysis of accounts receivable by component at December 31, 2017 and 2018 is as follows:

	At December 31,
	2017			2018
Subscribers and distributors	Ps.	178,722,706		Ps.	173,053,226
Telecommunications carriers for network interconnection and other services		8,671,416			5,543,263
Recoverable taxes (i)		40,477,188			46,706,298
Sundry debtors		14,736,340			12,685,281
Contractual assets (Note 2i, a)		—			34,718,749
Impairment of trade receivables		(39,044,925	)		(40,798,025	)
Total net	Ps.	203,562,725		Ps.	231,908,792
Non-current subscribers, distributors and contractual assets		9,786,581			15,681,872
Total current subscribers, distributors and contractual assets	Ps.	193,776,144		Ps.	216,226,920

(i) In accordance with the favorable resolution obtained from the authorities, in 2018 the subsidiary Claro Brasil recognized a benefit for the exclusion of the Tax on the Circulation of Goods and the Provision of Services (Imposto sobre a Circulação de Mercadorias e Prestação de Serviços, or “ICMS “) in the calculation bases of the Social Integration Program (Social Integration Program, or” PIS “) and the Contribution for the Financing of Social Security (Contribution to or Financing of Social Security, or” COFINS “) in the amount total of Ps. 12,295,869, that includes interest of Ps. 6,127,656. The asset was recognized based on the certainty of obtaining the economic benefit.

Schedule of Changes in Allowance for Expected Credit Losses

b) Changes in the allowance for expected credit losses is as follows:

	For the years ended December 31,
	2016			2017			2018
Balance at beginning of year	Ps.	(27,495,158	)	Ps.	(37,351,677	)	Ps.	(39,044,925	)
Increases recorded in expenses		(16,987,769	)		(20,766,362	)		(19,535,707	)
Adjustment on initial application of IFRS 9 (Note 2i, b)		—			—			(2,400,783	)
Write-offs		12,587,567			17,713,992			15,497,254
Translation effect		(5,456,317	)		1,359,122			4,686,136
Balance at end of year	Ps.	(37,351,677	)	Ps.	(39,044,925	)	Ps.	(40,798,025	)

Summary of Analysis of Contract Assets and Liabilities

e) An analysis of contract assets and liabilities at December 31, 2018 is as follows:

	2018
Contract Assets:
Balance at the beginning of the year	Ps.	29,640,953
Additions		32,029,279
Disposals		(25,243,487	)
Translation effect		(1,707,996	)
Balance at the end of the year	Ps.	34,718,749
Non-current contract assets	Ps.	5,437,263
Current portion contracts assets	Ps.	29,281,486

Receivable from subscribers and distributors [member]

Statement [LineItems]

Summary of Aging of Accounts Receivable

c) The following table shows the aging of accounts receivable at December 31, 2017 and 2018, for subscribers and distributors:

Past due

Total

Unbilled services provided

a-30 days

31-60 days

61-90 days

Greater than 90 days

December 31, 2017

Ps. 178,722,706

Ps. 78,384,174

Ps. 46,758,825

Ps. 6,780,671

Ps. 4,375,188

Ps. 42,423,848

December 31, 2018

Ps. 173,053,226

Ps. 62,623,654

Ps. 46,816,302

Ps. 6,315,277

Ps. 4,168,952

Ps. 53,129,041

Summary of Accounts Receivable from Subscribers and Distributors Included in the Allowance for Doubtful Accounts

d) The following table shows the accounts receivable from subscribers and distributors included in the impairments of trade receivables, as of December 31, 2017 and 2018:

	Total		1-90 days		Greater than 90 days
December 31, 2017		Ps. 39,044,925		Ps. 3,807,945		Ps. 35,236,980
December 31, 2018		Ps. 40,798,025		Ps. 4,079,803		Ps. 36,718,222

XML

Related Parties (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Summary of Analysis of the Balances with Related Parties

a) The following is an analysis of the balances with related parties as of December 31, 2017 and 2018. All of the companies were considered affiliates of América Móvil since the Company’s principal shareholders are either direct or indirect shareholders in the related parties.

	2017		2018
Accounts receivable:
Sears Roebuck de México, S.A. de C.V.	Ps.	211,491	Ps.	264,976
Sanborns Hermanos, S.A.		91,233		312,706
Patrimonial Inbursa, S.A.		246,874		214,180
Carso Infraestructura y Construcción, S.A. de C.V. and Subsidiaries		89,585		179,852
Grupo Condumex, S.A. de C.V. and Subsidiaries		47,269		35,007
Operadora de Sites Mexicanos, S.A. de C.V.		14,252		16,634
Other		167,526		240,250
Total	Ps.	868,230	Ps.	1,263,605
	2017		2018
Accounts payable:
Carso Infraestructura y Construcción, S.A. de C.V. and Subsidiaries	Ps.	947,761	Ps.	1,403,414
Grupo Condumex, S.A. de C.V. and Subsidiaries		812,427		784,678
Grupo Financiero Inbursa, S.A.B. de C.V.		38,847		235,745
Fianzas Guardiana Inbursa, S.A. de C.V.		276,633		227,014
PC Industrial, S.A. de C.V. and Subsidiaries		136,859		83,502
Enesa, S.A. de C.V. and Subsidiaries		50,609		22,630
Other		277,276		217,230
Total	Ps.	2,540,412	Ps.	2,974,213

Summary of Transactions with Related Parties

b) For the years ended December 31, 2016, 2017 and 2018, the Company conducted the following transactions with related parties:

	2016		2017		2018
Investments and expenses:
Construction services, purchases of materials, inventories and property, plant and equipment (i)	Ps.	9,917,280	Ps.	11,030,944	Ps.	7,211,960
Rent of towers		4,748,503		5,326,366		6,168,592
Insurance premiums, fees paid for administrative and operating services, brokerage services and others (ii)		4,118,469		4,135,578		4,134,380
Other services		1,899,818		2,802,667		1,864,017
	Ps.	20,684,070	Ps.	23,295,555	Ps.	19,378,949
Revenues:
Revenues services	Ps.	411,076	Ps.	416,047	Ps.	679,220
Sales of equipment		2,679,591		2,313,840		1,296,204
	Ps.	3,090,667	Ps.	2,729,887	Ps.	1,975,424

i) In 2018, this amount includes Ps.5,622,791 (Ps. 9,829,991 in 2017 and Ps. 9,547,530 in 2016) for network construction services and construction materials purchased from subsidiaries of Grupo Carso, S.A.B. de C.V. (Grupo Carso).

ii) In 2018, this amount includes Ps. 778,191 (Ps. 789,253 in 2017 and Ps. 812,247 in 2016) for network maintenance services performed by Grupo Carso subsidiaries; Ps. 13,784 in 2018 (Ps. 15,695 in 2017, and Ps. 705,074 in 2016) for software services provided by an associate; Ps. 2,541,703 in 2018 (Ps. 3,330,038 in 2017 and Ps. 2,406,058 in 2016) for insurance premiums with Seguros Inbursa S.A. and Fianzas Guardiana Inbursa, S.A., which, in turn, places most of such insurance with reinsurers.

XML

Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Schedule of Derivative Financial Instruments Contracted

An analysis of the derivative financial instruments contracted by the Company at December 31, 2017 and 2018 is as follows:

	At December 31,
	2017				2018
Instrument	Notional amount in millions		Fair Value		Notional amount in millions		Fair Value
Assets:
Swaps US Dollar-Mexican peso	US$	2,800		Ps.4,766,102	US$	3,490		Ps. 2,058,831
Swaps Euro-Mexican peso	€	—		—		—		—
Swaps Yen-US Dollar	¥	13,000		521,270	¥	13,000		581,948
Forwards US Dollar-Mexican peso	US$	1,744		1,600,666		—		—
Forwards US Dollar-Brazilian real	US$	100		44,280	US$	150		126,287
Swaps Swiss Franc-US Dollar	CHF	475		178,710		—		—
Swaps Euro-Brazilian real	€	450		359,671	€	300		1,080,552
Interest rate swap		Ps.200		916		—		—
Forwards Brazilian Real-US Dollar		—		—	BRL $	2,823		1,107,630
Forwards Euro-Brazilian real	€	400		330,427	€	150		123,005
Forwards US Dollar-Swiss franc	CHF	75		121,981		—		—
Forwards Euro-US Dollar	€	204		113,361	€	710		209,295
Total Assets				Ps. 8,037,384				Ps. 5,287,548

	At December 31,
	2017				2018
Instrument	Notional amount in millions		Fair Value		Notional amount in millions		Fair Value
Liabilities:
Swaps US Dollar-Euro	US$	2,092	Ps.	(8,340,970)	US$	2,025	Ps.	(5,114,863)
Swaps Pound sterling-Euro	£	740		(3,376,091)	£	740		(4,027,312)
Swap Pound sterling-US Dollar	£	2,010		(1,676,636)	£	2,010		(5,836,607)
Forwards US Dollar-Mexican Peso		—		—	US$	977		(772,704)
Forwards Euro-US Dollar		—		—	€	950		(333,586)
Call spread option	€	750		(48,422)		—		—
Put option	€	374		(482,645)	€	374		(988,669)
Call spread option	€	3,000		(434,696)	€	3,000		(33,838)
Total Liabilities			Ps.	(14,359,460)			Ps.	(17,107,579)
Non-current liability			Ps.	(3,756,921)			Ps.	(3,567,863)
Total current liability			Ps.	(10,602,539)			Ps.	(13,539,716)

Summary of Maturities of Notional Amount of Derivatives

The maturities of the notional amount of the derivatives are as follows:

Instrument	Notional amount in millions		2019		2020		2021		2022		2023 Thereafter
Assets
Swaps US Dollar-Mexican peso	US$			—		—		—		1,600		1,890
Swaps Yen-US Dollar	¥			—		—		—		—		13,000
Swaps Euro-Brazilian real	€			300		—		—		—		—
Forwards Brazilian Real-US Dollar		BRL		1,680		—		1,143		—		—
Forwards Euro-Brazilian Real	€			150		—		—		—		—
Forwards US Dollar-Brazilian Real	US$			150		—		—		—		—
Forwards Euro-US Dollar	€			710		—		—		—		—
Liabilities
Swaps US Dollar-Euro	US$			25		—		—		—		2,000
Swaps Pound sterling-Euro	£			—		—		—		—		740
Swap Pound sterling-US Dollar	£			—		550		—		—		1,460
Forwards US Dollar-Mexican Peso	US$			977		—		—		—		—
Forwards Euro-US Dollar	€			950		—		—		—		—
Put option	€			—		—		—		—		374
Call spread option	€			—		3,000		—		—		—

XML

Inventories, net (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Summary of Analysis of Inventories

An analysis of inventories at December 31, 2017 and 2018 is as follows:

	2017			2018
Mobile phones, accessories, computers, TVs, cards and other materials		Ps. 42,262,511			Ps. 43,723,492
Less: Reserve for obsolete and slow-moving inventories		(3,452,946	)		(3,418,130	)
Total		Ps. 38,809,565			Ps. 40,305,362

XML

Other assets, net (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Summary of Analysis of Other Assets

An analysis of other assets at December 31, 2017 and 2018 is as follows:

	2017		2018
Current portion:
Advances to suppliers (different from PP&E and inventories)		Ps. 9,536,654		Ps. 12,931,247
Prepaid insurance		683,091		949,590
Costs of mobile equipment and computers associated with deferred revenues		6,182,010		599,628
Other		950,991		815,728
		Ps. 17,352,746		Ps.15,296,193
Non-current portion:
Recoverable taxes		Ps. 12,249,372		Ps. 11,514,455
Prepayments for the use of fiber optics		4,361,668		3,985,216
Prepaid expenses and judicial deposits (1)		25,926,436		26,961,930
Total		Ps. 42,537,476		Ps. 42,461,601

XML

Property, Plant and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2018

Statement [LineItems]

Schedule of Property, Plant and Equipment, Net

a) An analysis of property, plant and equipment, net at December 31, 2016, 2017 and 2018 is as follows:

	At December 31, 2015			Additions		Retirements			Business combinations		Translation effect of Foreign Subsidiaries		Depreciation for the year			At December 31, 2016
Cost
Network in operation and equipment	Ps.	641,384,702		Ps.	101,794,197	Ps.	(8,963,076	)	Ps.	1,873,445	Ps.	235,186,745	Ps.	—		Ps.	971,276,013
Land and buildings		54,794,386			2,900,511		(2,845,298	)		3,839		7,281,973		—			62,135,411
Other assets		106,468,602			24,368,918		(10,717,096	)		69,937		24,736,655		—			144,927,016
Construction in process and advances plant suppliers (1)		38,850,776			70,517,319		(70,911,593	)		11,255		11,252,127		—			49,719,884
Spare parts for operation of the network		20,342,389			34,010,751		(27,641,919	)		5,520		1,566,307		—			28,283,048
Total		861,840,855			233,591,696		(121,078,982	)		1,963,996		280,023,807		—			1,256,341,372
Accumulated depreciation
Network in operation and equipment		236,731,728			—		(1,968,376	)		—		153,147,349		107,976,385			495,887,086
Buildings		4,567,588			—		(975,284	)		—		3,709,952		3,179,066			10,481,322
Other assets		47,057,084			—		(25,099,710	)		—		10,396,438		16,105,885			48,459,697
Spare parts for operation of the network		(44,423	)		—		(54,280	)		—		20,896		401,008			323,201
Total	Ps.	288,311,977		Ps.	—	Ps.	(28,097,650	)	Ps.	—	Ps.	167,274,635	Ps.	127,662,344		Ps.	555,151,306
Net Cost	Ps.	573,528,878		Ps.	233,591,696	Ps.	(92,981,332	)	Ps.	1,963,996	Ps.	112,749,172	Ps.	(127,662,344	)	Ps.	701,190,066

	At December 31, 2016		Additions		Retirements			Business combinations		Effect of translation of foreign subsidiaries			Depreciation for the year			At December 31, 2017
Cost
Network in operation and equipment		Ps. 971,276,013		Ps.  78,272,882		Ps. (21,657,715	)	Ps.	599,306		Ps.(38,824,540	)		Ps.            —			Ps.  989,665,946
Land and buildings		62,135,411		2,858,996		(415,219	)		27,686		(2,022,685	)		—			62,584,189
Other assets		144,927,016		19,287,525		(8,112,571	)		80,734		(5,866,897	)		—			150,315,807
Construction in process and advances plant suppliers (1)		49,719,884		66,383,381		(41,279,573	)		34,705		(737,023	)		—			74,121,374
Spare parts for operation of the network		28,283,048		27,013,148		(27,979,816	)		3,576		(728,358	)		—			26,591,598
Total		1,256,341,372		193,815,932		(99,444,894	)		746,007		(48,179,503	)		—			1,303,278,914
Accumulated depreciation
Network in operation and equipment		495,887,086		—		(21,214,724	)		—		(32,860,339	)		110,533,486			552,345,509
Buildings		10,481,322		—		(1,568,542	)		—		(940,054	)		2,682,559			10,655,285
Other assets		48,459,697		—		(4,572,509	)		—		(2,251,958	)		21,724,299			63,359,529
Spare parts for operation of the network		323,201		—		(9,205	)		—		(4,339	)		265,736			575,393
Total		Ps. 555,151,306		Ps.              —		Ps. (27,364,980	)	Ps.	—		Ps.(36,056,690	)		Ps. 135,206,080			Ps. 626,935,716
Net Cost		Ps. 701,190,066		Ps. 193,815,932		Ps. (72,079,914	)	Ps.	746,007		Ps. (12,122,813	)		Ps. (135,206,080	)		Ps. 676,343,198

	At December 31, 2017		Additions		Retirements			Business combinations		Effect of translation of foreign subsidiaries and hyperinflation adjustment			Depreciation for the year			At December 31, 2018
Cost
Network in operation and equipment		Ps. 989,665,946		Ps.   68,900,443		Ps.  (1,610,246	)		Ps. 128,246		Ps. (87,888,453	)		—			Ps. 969,195,936
Land and buildings		62,584,189		4,429,433		(3,987,671	)		8,874		(5,904,499	)		—			57,130,326
Other assets		150,315,807		25,268,252		(13,377,798	)		2,578		(12,399,702	)		—			149,809,137
Construction in process and advances plant suppliers (1)		74,121,374		92,285,397		(76,978,798	)		1,379		(8,336,823	)		—			81,092,529
Spare parts for operation of the network		26,591,598		49,380,349		(44,626,488	)		1,939		(2,902,869	)		—			28,444,529
Total		1,303,278,914		240,263,874		(140,581,001	)		143,016		(117,432,346	)		—			1,285,672,457
Accumulated depreciation
Network in operation and equipment		552,345,509		—		(28,712,096	)		—		(67,907,227	)		104,279,361			560,005,547
Buildings		10,655,285		—		(2,311,442	)		—		(2,157,996	)		2,625,102			8,810,949
Other assets		63,359,529		—		(2,418,837	)		—		(6,579,983	)		22,172,785			76,533,494
Spare parts for operation of the network		575,393		—		(160,696	)		—		(131,429	)		38,479			321,747
Total		Ps. 626,935,716		Ps.                 —		Ps.  (33,603,071	)		Ps.        —		Ps. (76,776,635	)		Ps.   129,115,727			Ps. 645,671,737
Net Cost		Ps. 676,343,198		Ps.240,263,874		Ps. (106,977,930	)		Ps. 143,016		Ps. (40,655,711	)		Ps. (129,115,727	)		Ps. 640,000,720

⁽¹⁾ Construction in progress includes fixed and mobile network facilities as well as satellite developments and fiber optic which is in the process of being installed.

Schedule of Relevant Information Related to Computation of Capitalized Borrowing Costs

d) Relevant information related to the computation of the capitalized borrowing costs is as follows:

	Year ended December 31,
	2016		2017		2018
Amount invested in the acquisition of qualifying assets		Ps. 52,974,400		Ps. 49,642,370		Ps. 45,456,630
Capitalized interest		2,861,307		2,875,034		2,020,288
Capitalization rate		5.4%		5.8%		4.4%

Property, plant and equipment under capital leases [member]

Statement [LineItems]

Schedule of Property, Plant and Equipment, Net

b) At December 31, 2017 and 2018, property, plant and equipment include the following assets under capital leases:

	2017			2018
Assets under capital leases		Ps.  8,116,532			Ps.7,770,681
Accumulated depreciation		(3,475,014	)		(3,530,241	)
		Ps.  4,641,518			Ps.  4,240,440

XML

Intangible assets, net and goodwill (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Summary of Analysis of Intangible Assets

An analysis of intangible assets at December 31, 2016, 2017 and 2018 is as follows:

	For the year ended December 31, 2016
	Balance at beginning of year			Acquisitions			Acquisitions in business combinations			Disposals and other			Amortization of the year			Effect of translation of foreign subsidiaries			Balance at end of year
Licenses and rights of use	Ps.	175,295,775		Ps.	9,129,949		Ps.	360,144		Ps.	1,269,478		Ps.	—		Ps.	56,684,016		Ps.	242,739,362
Accumulated amortization		(84,846,524	)		—			—			—			(10,255,271	)		(31,606,303	)		(126,708,098	)
Net		90,449,251			9,129,949			360,144			1,269,478			(10,255,271	)		25,077,713			116,031,264
Trademarks		22,824,013			—			101,655			(13,820	)		—			4,877,302			27,789,150
Accumulated amortization		(11,523,707	)		—			—			—			(330,576	)		(3,367,974	)		(15,222,257	)
Net		11,300,306			—			101,655			(13,820	)		(330,576	)		1,509,328			12,566,893
Customer relationships		18,394,407			—			1,904,503			—			—			5,946,598			26,245,508
Accumulated amortization		(3,962,875	)		—			—			—			(3,231,518	)		(5,240,681	)		(12,435,074	)
Net		14,431,532			—			1,904,503			—			(3,231,518	)		705,917			13,810,434
Software licenses		8,782,768			3,854,066			26,871			(829,680	)		—			1,040,771			12,874,796
Accumulated amortization		(2,424,598	)		(41,185	)		(8,367	)		829,680			(3,469,461	)		(9,809	)		(5,123,740	)
Net		6,358,170			3,812,881			18,504			—			(3,469,461	)		1,030,962			7,751,056
Content rights		2,634,527			2,242,556			—			(217,057	)		—			216,272			4,876,298
Accumulated amortization		(428,746	)		—			—			(1,612	)		(2,236,141	)		—			(2,666,499	)
Net		2,205,781			2,242,556			—			(218,669	)		(2,236,141	)		216,272			2,209,799
Total of intangibles, net	Ps.	124,745,040		Ps.	15,185,386		Ps.	2,384,806		Ps.	1,036,989		Ps.	(19,522,967	)	Ps.	28,540,192		Ps.	152,369,446
Goodwill (Note 12)	Ps.	137,113,716		Ps.	—		Ps.	3,953,023		Ps.	(356,832	)	Ps.	—		Ps.	11,922,728		Ps.	152,632,635

	For the year ended December 31, 2017
	Balance at beginning of year			Acquisitions		Acquisitions in business combinations		Disposals and other			Amortization of the year			Effect of translation of foreign subsidiaries			Balance at end of year
Licenses and rights of use	Ps.	242,739,362		Ps.	12,347,051	Ps.	53,923	Ps.	(1,037,458	)	Ps.	—		Ps.	(6,689,054	)	Ps.	247,413,824
Accumulated amortization		(126,708,098	)		—		—		244,564			(11,879,489	)		4,233,585			(134,109,438	)
Net		116,031,264			12,347,051		53,923		(792,894	)		(11,879,489	)		(2,455,469	)		113,304,386
Trademarks		27,789,150			127,823		82,868		(29,804	)		—			809,175			28,779,212
Accumulated amortization		(15,222,257	)		—		—		34,464			(3,179,461	)		(474,151	)		(18,841,405	)
Net		12,566,893			127,823		82,868		4,660			(3,179,461	)		335,024			9,937,807
Customer relationships		26,245,508			—		512,667		(882,338	)		—			1,109,877			26,985,714
Accumulated amortization		(12,435,074	)		—		—		882,338			(3,769,777	)		(806,982	)		(16,129,495	)
Net		13,810,434			—		512,667		—			(3,769,777	)		302,895			10,856,219
Software licenses		12,874,796			3,351,200		—		(1,698,118	)		—			527,720			15,055,598
Accumulated amortization		(5,123,740	)		—		—		1,212,669			(3,699,363	)		(204,727	)		(7,815,161	)
Net		7,751,056			3,351,200		—		(485,449	)		(3,699,363	)		322,993			7,240,437
Content rights		4,876,298			2,099,084		—		(63,137	)		—			(194,803	)		6,717,442
Accumulated amortization		(2,666,499	)		—		—		(195,658	)		(1,820,092	)		165,584			(4,516,665	)
Net		2,209,799			2,099,084		—		(258,795	)		(1,820,092	)		(29,219	)		2,200,777
Total of intangibles, net	Ps.	152,369,446		Ps.	17,925,158	Ps.	649,458	Ps.	(1,532,478	)	Ps.	(24,348,182	)	Ps.	(1,523,776	)	Ps.	143,539,626
Goodwill (Note 12)	Ps.	152,632,635		Ps.	—	Ps.	951,348	Ps.	(134,525	)	Ps.	—		Ps.	(1,986,226	)	Ps.	151,463,232

	For the year ended December 31, 2018
	Balance at beginning of year			Acquisitions		Acquisitions in business combinations		Disposals and other			Amortization of the year			Effect of translation of foreign subsidiaries and Hyperinflation adjustment			Balance at end of year
Licenses and rights of use	Ps.	247,413,824		Ps.	4,227,244		—	Ps.	1,508,274			—		Ps.	(19,670,368	)	Ps.	233,478,974
Accumulated amortization		(134,109,438	)		—		—		(1,005,877	)		(11,347,089	)		16,281,825			(130,180,579	)
Net		113,304,386			4,227,244				502,397			(11,347,089	)		(3,388,543	)		103,298,395
Trademarks		28,779,212			159,958		6,631		—						(738,635	)		28,207,166
Accumulated amortization		(18,841,405	)		—		—		—			(4,973,602	)		275,046			(23,539,961	)
Net		9,937,807			159,958		6,631		—			(4,973,602	)		(463,589	)		4,667,205
Customer relationships		26,985,714			74,637		15,556		—						(1,532,839	)		25,543,068
Accumulated amortization		(16,129,495	)						—			(3,754,312	)		1,122,270			(18,761,537	)
Net		10,856,219			74,637		15,556		—			(3,754,312	)		(410,569	)		6,781,531
Software licenses		15,055,598			2,004,550		3,006		(905,610	)		—			(1,848,286	)		14,309,258
Accumulated amortization		(7,815,161	)		—				2,677,848			(3,491,629	)		924,139			(7,704,803	)
Net		7,240,437			2,004,550		3,006		1,772,238			(3,491,629	)		(924,147	)		6,604,455
Content rights		6,717,442			850,779		—		—			—			(18,512	)		7,549,709
Accumulated amortization		(4,516,665	)		—		—		—			(2,231,978	)		(14,949	)		(6,763,592	)
Net		2,200,777			850,779		—		—			(2,231,978	)		(33,461	)		786,117
Total of intangibles, net	Ps.	143,539,626		Ps.	7,317,168	Ps.	25,193	Ps.	2,274,635		Ps.	(25,798,610	)	Ps.	(5,220,309	)	Ps.	122,137,703
Goodwill	Ps.	151,463,232		Ps.	1,455	Ps.	333,284	Ps.	(1,094,861	)		—		Ps.	(5,136,613	)	Ps.	145,566,497

Summary of Aggregate Carrying Amount of Goodwill

The aggregate carrying amount of goodwill is allocated as follows:

	2017		2018
Europe (7 countries)		Ps. 53,143,542		Ps. 53,066,729
Brazil (Fixed, wireless and TV)		24,708,740		21,388,124
Puerto Rico		17,463,394		17,463,394
Dominican Republic		14,186,723		14,186,723
Colombia		13,981,033		12,770,381
México		9,852,912		9,856,601
Peru		3,958,110		3,086,981
Chile		2,834,134		2,576,214
El Salvador		2,510,577		2,510,577
Ecuador		2,155,385		2,155,385
Other countries		6,668,682		6,505,388
		Ps. 151,463,232		Ps. 145,566,497

XML

Business combinations, acquisitions, sale and non-controlling interest (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Summary of Selected Financial Data From Statements of Financial Position

Selected financial data from the statements of financial position

	December 31,
	2017		2018
Assets:
Current assets	Ps.	29,128,486	Ps.	29,854,542
Non-current assets		150,225,260		131,407,408
Total assets	Ps.	179,353,746	Ps.	161,261,950
Liabilities and equity:
Current liabilities	Ps.	30,192,384	Ps.	36,822,034
Non-current liabilities		89,048,150		80,023,800
Total liabilities		119,240,534		116,845,834
Equity attributable to equity holders of the parent		25,808,318		22,621,625
Non-controlling interest (1)		34,304,894		21,794,491
Total equity	Ps.	60,113,212	Ps.	44,416,116
Total liabilities and equity	Ps.	179,353,746	Ps.	161,261,950

(1) In 2017 this amount includes Ps. 14,942,886 for the subordinated perpetual fixed rate bond (see Note 19).

Summary of Statements of Comprehensive Income

Summarized statements of comprehensive income

	For the year ended December 31,
	2016		2017		2018
Operating revenues	Ps.	85,185,177	Ps.	93,644,173	Ps.	100,716,444
Operating costs and expenses		81,590,233		86,920,692		95,984,880
Operating income	Ps.	3,594,944	Ps.	6,723,481	Ps.	4,731,564
Net income	Ps.	7,065,770	Ps.	5,656,132	Ps.	3,809,694
Total comprehensive income	Ps.	8,450,837	Ps.	7,737,797	Ps.	5,047,838
Net income attributable to:
Equity holders of the parent	Ps.	3,241,556	Ps.	2,884,627	Ps.	1,942,944
Non-controlling interest		3,824,214		2,771,505		1,866,750
	Ps.	7,065,770	Ps.	5,656,132	Ps.	3,809,694
Comprehensive income attributable to:
Equity holders of the parent	Ps.	4,311,801	Ps.	3,978,263	Ps.	2,574,397
Non-controlling interest		4,139,036		3,759,534		2,473,441
	Ps.	8,450,837	Ps.	7,737,797	Ps.	5,047,838

XML

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Summary of Composition of Income Tax Expense

The composition of income tax expense for the years ended December 31, 2016, 2017 and 2018 is as follows:

	2016			2017			2018
In Mexico:
Current year income tax	Ps.	14,316,005		Ps.	16,568,274		Ps.	28,572,414
Deferred income tax		(12,086,232	)		2,582,287			(2,688,727	)
Foreign:
Current year income tax		15,367,903			13,524,729			19,898,728
Deferred income tax		(6,198,820	)		(7,733,779	)		694,664
	Ps.	11,398,856		Ps.	24,941,511		Ps.	46,477,079

Summary of Deferred Tax Related to Items Recognized in OCI

Deferred tax related to items recognized in OCI during the year:

	For the years ended December 31,
	2016			2017			2018
Remeasurement of defined benefit plans	Ps.	(7,734,732	)	Ps.	3,032,403		Ps.	408,735
Effect of financial instruments acquired for hedging purposes		(21,046	)		(5,337	)
Equity investments at fair value		2,858,452			(266,753	)		1,613,667
Other		136,879			—			(8,922	)
Deferred tax benefit (expense) recognized in OCI	Ps.	(4,760,447	)	Ps.	2,760,313		Ps.	2,013,480

Summary of Reconciliation of Statutory Income Tax Rate in Mexico to Consolidated Effective Income Tax Rate Recognized

A reconciliation of the statutory income tax rate in Mexico to the consolidated effective income tax rate recognized by the Company is as follows:

	Year ended December 31,
	2016			2017			2018
Statutory income tax rate in Mexico		30.0%			30.0%			30.0%
Impact of non-deductible and non-taxable items:
Tax inflation effects		15.9%			17.8%			7.3%
Derivatives		8.0%			1.0%			0.4%
Employee benefits		4.4%			2.2%			1.3%
Other		9.8%			2.6%			6.3%
Effective tax rate on Mexican operations		68.1%			53.6%			45.3%
Use of unrecognized tax credits in Brazil		(0.6%	)		(0.4%	)		—
Equity interest in net loss of associated companies		(0.2%	)		—			—
Dividends received from associates		(7.9%	)		(1.2%	)		(0.8%	)
Foreign subsidiaries and other non-deductible items, net		(10.8%	)		(8.3%	)		1.5%
Effective tax rate		48.6%			43.7%			46.0%

Summary of Analysis of Temporary Differences Giving Rise to Net Deferred Tax Liability

An analysis of temporary differences giving rise to the net deferred tax liability is as follows:

	Consolidated statements of financial position						Consolidated statements of comprehensive income
	2017			2018			2016			2017			2018
Provisions		Ps.26,268,666			Ps.20,781,421			Ps.1,622,132			Ps.1,579,604			Ps.1,841,705
Deferred revenues		7,461,802			6,866,120			(12,128	)		(965,010	)		3,632,051
Tax losses carry forward		38,332,408			27,881,491			12,706,245			(323,506	)		(5,833,660	)
Property, plant and equipment (1)		(9,929,129	)		(11,756,590	)		2,445,783			1,974,753			453,493
Inventories		2,003,049			2,106,976			(229,571	)		519,046			81,270
Licenses and rights of use (1)		(2,455,877	)		(3,896,788	)		54,182			348,201			961,402
Employee benefits		33,253,071			33,673,874			3,616,952			1,225,310			1,128,209
Other		9,639,995			10,956,823			(1,918,543	)		793,094			(270,407	)
Net deferred tax assets		Ps.104,573,985			Ps.86,613,327
Deferred tax expense in net profit for the year								Ps.18,285,052			Ps.5,151,492			Ps.1,994,063

(1) As of December 31, 2018, the balance included the effects of hyperinflation.

Summary of Reconciliation of Deferred Tax Assets and Liabilities, Net

Reconciliation of deferred tax assets and liabilities, net:

	2016			2017			2018
Opening balance as of January 1,	Ps.	69,817,147		Ps.	98,589,818		Ps.	104,573,985
Deferred tax benefit		18,285,052			5,151,492			1,994,063
Translation effect		15,273,228			(1,687,276	)		(8,854,010	)
Deferred tax benefit (expense) recognized in OCI		(4,760,447	)		2,760,313			2,013,480
Deferred taxes acquired in business combinations		(25,162	)		(240,362	)		(25,827	)
Hyperinflationary effect in Argentina		—			—			(4,907,151	)
Effect of adoption of IFRS 9 (Note 2ai)		—			—			544,628
Effect of adoption of IFRS 15 (Note 2ai)		—			—			(8,725,841	)
Closing balance as of December 31,	Ps.	98,589,818		Ps.	104,573,985		Ps.	86,613,327
Presented in the consolidated statements of financial position as follows:
Deferred income tax assets	Ps.	112,651,699		Ps.	116,571,349		Ps.	111,186,768
Deferred income tax liabilities		(14,061,881	)		(11,997,364	)		(24,573,441	)
	Ps.	98,589,818		Ps.	104,573,985		Ps.	86,613,327

Summary of Combined Income before Taxes and Combined Provision for Taxes

The combined income before taxes and the combined provision for taxes of such subsidiaries in 2016, 2017 and 2018 are as follows:

	2016		2017		2018
Combined income before taxes	Ps.	45,697,258	Ps.	38,286,046	Ps.	66,314,883
Combined tax provision differences  not deducible-not cumulative in  the foreign subsidiaries	Ps.	9,169,083	Ps.	5,790,950	Ps.	20,593,392

Available Tax Loss Carryforwards Recorded in Deferred Tax Assets

At December 31, 2018, the available tax loss carryforwards recorded in deferred tax assets are as follows on a country by country basis:

Country	Balance of available tax loss carryforwards at December 31, 2018		Tax loss carryforward benefit
Brazil		Ps. 59,695,441		Ps. 20,296,450
Austria		20,128,833		5,032,208
Mexico		6,043,603		1,813,081
Colombia		2,239,486		739,030
Nicaragua		2,403		722
Total		Ps. 88,109,766		Ps. 27,881,491

XML

Debt (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Summary of Short- and Long-Term Debt

The Company’s short- and long-term debt consists of the following:

At December 31, 2017					(Thousands of Mexican pesos)
Currency	Loan	Interest rate	Maturity		Total
Senior Notes
U.S. dollars
	Fixed-rate Senior notes (i)	5.000%		2019	Ps.	14,840,025
	Fixed-rate Senior notes (i)	5.500%		2019		7,467,145
	Fixed-rate Senior notes (i)	5.000%		2020		42,043,077
	Fixed-rate Senior notes (i)	3.125%		2022		31,658,720
	Fixed-rate Senior notes (i)	6.375%		2035		19,417,282
	Fixed-rate Senior notes (i)	6.125%		2037		7,305,744
	Fixed-rate Senior notes (i)	6.125%		2040		39,573,400
	Fixed-rate Senior notes (i)	4.375%		2042		22,754,705
	Subtotal U.S. dollars				Ps.	185,060,098
Mexican pesos
	Domestic Senior notes (i)	8.110%		2018	Ps.	1,750,000
	Domestic Senior notes (i)	8.270%		2018		1,160,110
	Domestic Senior notes (i)	8.600%		2020		7,000,000
	Domestic Senior notes (i)	0.000%		2025		4,409,873
	Domestic Senior notes (i)	8.360%		2037		5,000,000
	Fixed-rate Senior notes (i)	6.000%		2019		10,000,000
	Fixed-rate Senior notes (i)	6.450%		2022		22,500,000
	Fixed-rate Senior notes (i)	7.125%		2024		11,000,000
	Fixed-rate Senior notes (i)	8.460%		2036		7,871,700
	Subtotal Mexican pesos				Ps.	70,691,683
Euros
	Fixed-rate Senior notes (i)	1.000%		2018	Ps.	14,252,360
	Fixed-rate Senior notes (i)	4.125%		2019		23,753,933
	Exchangeable Bonds (i)	0.000%		2020		67,504,878
	Fixed-rate Senior notes (i)	3.000%		2021		23,753,933
	Fixed-rate Senior notes (i)	3.125%		2021		18,727,775
	Fixed-rate Senior notes (i)	4.000%		2022		19,333,685
	Fixed-rate Senior notes (i)	4.750%		2022		17,815,450
	Fixed-rate Senior notes (i)	3.500%		2023		7,594,262
	Fixed-rate Senior notes (i)	3.259%		2023		17,815,450
	Fixed-rate Senior notes (i)	1.500%		2024		20,190,843
	Fixed-rate Senior notes (i)	1.500%		2026		17,815,450
	Fixed-rate Senior notes (i)	2.125%		2028		15,440,057
	Subtotal Euros				Ps.	263,998,076
Pounds sterling
	Fixed-rate Senior notes (i)	5.000%		2026	Ps.	13,368,884
	Fixed-rate Senior notes (i)	5.750%		2030		17,379,549
	Fixed-rate Senior notes (i)	4.948%		2033		8,021,330
	Fixed-rate Senior notes (i)	4.375%		2041		20,053,326
	Subtotal Pounds sterling				Ps.	58,823,089
Swiss francs
	Fixed-rate Senior notes (i)	1.125%		2018	Ps.	11,169,748
	Subtotal Swiss francs				Ps.	11,169,748
Brazilian reais
	Debenture (i)	102.900% of CDI		2020	Ps.	8,972,204
	Promissory Note (i)	102.400% of CDI		2019		5,981,469
	Debenture (i)	103.900% of CDI		2019		5,981,469
	Subtotal Brazilian reais				Ps.	20,935,142
Other currencies
Japanese yen
	Fixed-rate Senior notes (i)	2.950%		2039	Ps.	2,282,608
	Subtotal Japanese yen				Ps.	2,282,608
Chilean pesos
	Fixed-rate Senior notes (i)	3.961%		2035	Ps.	4,312,424
	Subtotal Chilean pesos				Ps.	4,312,424
	Subtotal other currencies				Ps.	6,595,032
Hybrid Notes
Euros
	Euro NC5 Series A Capital Securities (iii)	5.125%		2073	Ps.	21,378,540
	Euro NC10 Series B Capital Securities (iii)	6.375%		2073		13,064,663
	Subtotal Euros				Ps.	34,443,203
Pounds sterling
	GBP NC7 Capital Securities (iii)	6.375%		2073	Ps.	14,705,772
	Subtotal Pounds sterling				Ps.	14,705,772
	Subtotal Hybrid Notes				Ps.	49,148,975
Lines of Credit and others
U.S. dollars
	Lines of credit (ii)	L + 0.200% and 1.500% - 7.250%		2018 - 2019	Ps.	14,474,350
Mexican pesos
	Lines of credit (ii)	TIIE + 0.040% - TIIE + 0.175%		2018 - 2019	Ps.	12,500,000
Brazilian reais
	Lines of credit (ii)	107% of CDI - TJLP + 3.500% & 3.000% - 9.500%		2018 -2027	Ps.	4,389,260
Chilean pesos
	Financial Leases	8.700% - 8.970%		2018 - 2027	Ps.	99,446
	Subtotal Lines of Credit and others				Ps.	31,463,056
	Total debt				Ps.	697,884,899
	Less: Short-term debt and current portion of long-term debt				Ps.	51,745,841
	Long-term debt				Ps.	646,139,058

At December 31, 2018					(Thousands of Mexican pesos)
Currency	Loan	Interest rate	Maturity		Total
Senior Notes
U.S. dollars
	Fixed-rate Senior notes (i)	5.000%		2019	Ps.	14,762,175
	Fixed-rate Senior notes (i)	5.500%		2019		7,427,972
	Fixed-rate Senior notes (i)	5.000%		2020		41,822,521
	Fixed-rate Senior notes (i)	3.125%		2022		31,492,640
	Fixed-rate Senior notes (i)	6.375%		2035		19,315,420
	Fixed-rate Senior notes (i)	6.125%		2037		7,267,419
	Fixed-rate Senior notes (i)	6.125%		2040		39,365,800
	Fixed-rate Senior notes (i)	4.375%		2042		22,635,335
	Subtotal U.S. dollars				Ps.	184,089,282
Mexican pesos
	Fixed-rate Senior notes (i)	6.000%		2019	Ps.	10,000,000
	Domestic Senior notes (i)	8.600%		2020		7,000,000
	Fixed-rate Senior notes (i)	6.450%		2022		22,500,000
	Fixed-rate Senior notes (i)	7.125%		2024		11,000,000
	Domestic Senior notes (i)	0.000%		2025		4,629,425
	Fixed-rate Senior notes (i)	8.460%		2036		7,871,700
	Domestic Senior notes (i)	8.360%		2037		5,000,000
	Subtotal Mexican pesos				Ps.	68,001,125
Euros
	Fixed-rate Senior notes (i)	4.125%		2019	Ps.	22,558,572
	Exchangeable Bonds (i)	0.000%		2020		64,107,851
	Fixed-rate Senior notes (i)	3.000%		2021		22,558,572
	Fixed-rate Senior notes (i)	3.125%		2021		17,568,739
	Fixed-rate Senior notes (i)	4.000%		2022		18,028,031
	Fixed-rate Senior notes (i)	4.750%		2022		16,918,929
	Fixed-rate Senior notes (i)	3.500%		2023		7,132,481
	Fixed-rate Senior notes (i)	3.259%		2023		16,918,929
	Fixed-rate Senior notes (i)	1.500%		2024		19,174,786
	Fixed-rate Senior notes (i)	1.500%		2026		16,918,929
	Fixed-rate Senior notes (i)	2.125%		2028		14,663,072
	Subtotal Euros				Ps.	236,548,891
Pounds sterling
	Fixed-rate Senior notes (i)	5.000%		2026	Ps.	12,550,801
	Fixed-rate Senior notes (i)	5.750%		2030		16,316,042
	Fixed-rate Senior notes (i)	4.948%		2033		7,530,481
	Fixed-rate Senior notes (i)	4.375%		2041		18,826,202
	Subtotal Pounds sterling				Ps.	55,223,526
Brazilian reais
	Debenture (i)	103.900% of CDI		2019	Ps.	5,079,720
	Promissory notes (i)	102.400% of CDI		2019		5,079,720
	Promissory notes (i)	103.205% of CDI		2019		1,828,699
	Debenture (i)	102.900% of CDI		2020		7,619,580
	Debenture (i)	104.000% of CDI		2021		5,587,692
	Debenture (i)	104.250% of CDI		2021		7,695,776
	Subtotal Brazilian reais				Ps.	32,891,187
Other currencies
Japanese yen
	Fixed-rate Senior notes (i)	2.950%		2039	Ps.	2,334,864
	Subtotal Japanese yen				Ps.	2,334,864
Chilean pesos
	Fixed-rate Senior notes (i)	3.961%		2035	Ps.	3,904,707
	Subtotal Chilean pesos				Ps.	3,904,707
	Subtotal other currencies				Ps.	6,239,571
Hybrid Notes
Euros
	Euro NC10 Series B Capital Securities (iii)	6.375%		2073	Ps.	12,407,214
	Subtotal Euros				Ps.	12,407,214
Pounds sterling
	GBP NC7 Capital Securities (iii)	6.375%		2073	Ps.	13,805,881
	Subtotal Pounds sterling				Ps.	13,805,881
	Subtotal Hybrid Notes					26,213,095
Lines of Credit and others
U.S. dollars
	Lines of credit (ii)	L + 0.200% and 1.500% - 8.950%		2019 - 2021	Ps.	11,698,885
Mexican pesos
	Lines of credit (ii)	TIIE + 0.175%		2019	Ps.	4,500,000
Euros
	Lines of credit (ii)	-0.100% - 0.000%		2019	Ps.	5,526,850
Brazilian reais
	Lines of credit (ii)	5.000% - 6.000%		2019 - 2027	Ps.	27,009
Peruvian Soles
	Lines of credit (ii)	4.700% - 12.100%		2019	Ps.	7,898,595
Chilean pesos
	Financial Leases	8.700% - 8.970%		2019 - 2027	Ps.	64,437
	Subtotal Lines of Credit and others				Ps.	29,715,776
	Total debt				Ps.	638,922,453
	Less: Short-term debt and current portion of long-term debt				Ps.	96,230,634
	Long-term debt				Ps.	542,691,819

Summary of Short Term Debt Maturities

An analysis of the Company’s short-term debt maturities as of December 31, 2017, and December 31, 2018, is as follows:

	2017		2018
Obligations and Senior Notes		Ps.    28,994,496		Ps.      67,365,810
Lines of credit		22,714,383		28,852,364
Financial Leases		36,962		12,460
Total		Ps.    51,745,841		Ps.      96,230,634
Weighted average interest rate		4.0%		5.20%

Summary of Long Term Debt Maturities

The Company’s long-term debt maturities as of December 31, 2018 are as follows:

Years	Amount
2020	Ps.	121,184,630
2021		54,189,122
2022		88,027,828
2023 and thereafter		279,290,239
Total	Ps.	542,691,819

Summary of Senior Notes Outstanding

The outstanding Senior Notes at December 31, 2017, and December 31, 2018, are as follows:

Currency*	2017		2018
U.S. dollars		Ps. 185,060,098		Ps.    184,089,282
Mexican pesos		70,691,683		68,001,125
Euros**		263,998,076		236,548,891
Pounds sterling**		58,823,089		55,223,526
Swiss francs		11,169,748		—
Brazilian reais		20,935,142		32,891,187
Japanese yens		2,282,608		2,334,864
Chilean pesos		4,312,424		3,904,707

* Thousands of Mexican pesos

** Includes secured and unsecured senior notes.

XML

Accounts payable, accrued liabilities and asset retirement obligations (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Components Accounts Payable and Accrued Liabilities

The components of the caption accounts payable and accrued liabilities are as follows:

	At December 31,
	2017		2018
Suppliers		Ps. 106,483,848		Ps. 118,406,380
Sundry creditors		91,842,929		91,087,197
Interest payable		8,930,561		8,535,519
Guarantee deposits from customers		1,460,286		1,421,336
Dividends payable		3,955,783		2,506,835
Total		Ps. 212,673,407		Ps. 221,957,267

Summary of Balance of Accrued Liabilities

The balance of accrued liabilities at December 31, 2017 and 2018 are as follows:

	At December 31,
	2017		2018
Current liabilities
Direct employee benefits payable		Ps. 16,673,627		Ps. 16,152,118
Contingencies		51,079,131		40,281,573
Total		Ps. 67,752,758		Ps. 56,433,691

Summary of Movements in Contingent Liabilities

The movements in contingencies for the years ended December 31, 2017 and 2018 are as follows:

Balance at December 31, 2016

Business combination

Effect of translation

Increase of the year

Applications

Balance at December 31, 2017

Payments

Reversals

Contingencies

Ps. 50,766,070

Ps. 115,971

Ps. (648,685)

Ps. 10,510,473

Ps. (7,618,520)

Ps. (2,046,178)

Ps. 51,079,131

Balance at December 31, 2017

Business combination

Effect of translation

Increase of the year

Applications

Balance at December 31, 2018

Payments

Reversals

Contingencies

Ps. 51,079,131

Ps. 7,812

Ps. (5,729,826)

Ps. 15,683,252

Ps. (6,203,329)

Ps. (14,555,467)

Ps. 40,281,573

Summary of Movements in Asset Retirement Obligations

The movements in the asset retirement obligations for the years ended December 31, 2017 and 2018 are as follows:

Balance at    December 31,   2016

Effect of      translation

Increase of     the year

Applications

Balance at      December 31,     2017

Payments

Reversals

Asset retirement obligations

Ps. 16,288,631

Ps. (119,928)

Ps. 3,160,320

Ps. (126,088)

Ps. (957,806)

Ps. 18,245,129

Balance at  December 31,  2017

Effect of  translation

Increase of  the year

Applications

Balance at  December 31,  2018

Payments

Reversals

Asset retirement obligations

Ps. 18,245,129

Ps. (2,020,853)

Ps. 1,062,745

Ps. (151,364)

Ps. (1,164,056)

Ps. 15,971,601

XML

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Schedule of Non-Cancelable Commitments under Finance and Operating Leases

The Company has the following non-cancelable commitments under finance leases:

Year ended December 31,
2019	Ps.	22,920
2020		13,365
2021		12,068
2022		10,751
2023		9,399
2024 and thereafter		34,011
Total	Ps.	102,514
Less: amounts representing finance charges		23,837
Present value of net minimum lease payments		78,677
Less current portion		14,240
Long-term obligations	Ps.	64,437

An analysis of non-cancellable operating leases is as follows:

Year ended December 31,
2019	Ps.	24,034,366
2020		22,104,366
2021		15,522,020
2022		14,250,332
2023		12,046,800
2024 and thereafter		49,991,937
Total	Ps.	137,949,821

Purchase Commitments

As of December 31, 2018, the total amounts equivalent to the contract period are detailed below:

Year ended December 31,
2019	Ps.	88,233,626
2020		68,170,083
2021		55,358,156
2022		13,322,961
Total	Ps.	225,084,826

XML

Employee Benefits (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Analysis of the Net Liability and Net Period Cost for Employee Benefit

An analysis of the net liability and net period cost for employee benefits is as follows:

	At December 31,
	2017		2018
Liability:
Mexico	Ps.	84,821,197	Ps.	85,517,190
Puerto Rico		13,962,128		13,986,596
Europe		14,833,840		12,705,926
Brazil		6,276,780		5,666,694
Ecuador		403,194		448,608
Total		Ps. 120,297,139	Ps.	118,325,014

	For the year ended December 31,
	2016		2017		2018
Net period cost (benefit)
Mexico	Ps.	12,281,154	Ps.	11,586,065	Ps.	12,046,208
Puerto Rico		1,058,131		776,238		686,067
Europe		226,447		385,689		619,039
Brazil		633,159		735,855		579,432
Ecuador		41,380		152,335		58,354
Total	Ps.	14,240,271	Ps.	13,636,182	Ps.	13,989,100

Summary of Defined Benefit Obligation (DBO) and Plan Assets for the Pension and Other Benefit Obligation Plans

The defined benefit obligation (DBO) and plan assets for the pension and other benefit obligation plans, by country, are as follows:

	At December 31
	2017								2018
	DBO		Plan Assets		Effect of asset celling		Net employee benefit liability		DBO		Plan Assets		Effect of asset celling		Net employee benefit liability
Mexico	Ps.	266,304,948	Ps.	(182,539,376)	Ps.	—	Ps.	83,765,572	Ps.	247,997,060	Ps.	(163,404,418)	Ps.	—	Ps.	84,592,642
Puerto Rico		38,711,695		( 24,749,567)		—		13,962,128		35,220,889		( 21,234,293)		—		13,986,596
Brazil		19,369,664		( 20,399,661)		6,519,560		5,489,563		18,795,315		( 19,032,411)		5,087,543		4,850,447
Europe		4,554,912		—		—		4,554,912		4,477,042		—		—		4,477,042
Total	Ps.	328,941,219	Ps.	(227,688,604)	Ps.	6,519,560	Ps.	107,772,175	Ps.	306,490,306	Ps.	(203,671,122)	Ps.	5,087,543	Ps.	107,906,727

Summary of the Actuarial Results Generated for the Pension and Retirement Plans as well as the Medical Services

Below is a summary of the actuarial results generated for the pension and retirement plans as well as the medical services in Puerto Rico and Brazil; the pension plans and seniority premiums related to Telmex; the pension plan, the service awards plan and severance in Austria corresponding to the years ended December 31, 2016, 2017 and 2018:

	At December 31, 2016
	DBO			Plan Assets			Effect of asset celling			Net employee benefit
Balance at the beginning of the year	Ps.	314,049,729		Ps.	(212,234,440	)	Ps.	4,823,147		Ps.	106,638,436
Current service cost		4,606,856									4,606,856
Interest cost on projected benefit obligation		27,275,363									27,275,363
Expected return on plan assets					(18,972,042	)					(18,972,042	)
Changes in the asset ceiling during the period and others								875,192			875,192
Past service costs and other					165,851						165,851
Actuarial gain for changes in experience		(28,867	)								(28,867	)
Actuarial loss from changes in financial assumptions		7,784									7,784
Net period cost	Ps.	31,861,136		Ps.	(18,806,191	)	Ps.	875,192		Ps.	13,930,137
Actuarial gain for changes in experience		(20,976,837	)								(20,976,837	)
Actuarial loss from changes in demographic assumptions		397,985									397,985
Actuarial loss from changes in financial assumptions		1,718,189									1,718,189
Changes in the asset ceiling during the period and others								(754,535	)		(754,535	)
Return on plan assets greater than discount rate					(4,724,041	)					(4,724,041	)
Recognized in other comprehensive income	Ps.	(18,860,663	)	Ps.	(4,724,041	)	Ps.	(754,535	)	Ps.	(24,339,239	)
Contributions made by plan participants		255,760			(255,760	)					—
Contributions to the pension plan made by the Company					(2,756,519	)					(2,756,519	)
Benefits paid		(25,694,301	)		25,517,599						(176,702	)
Payments to employees		(525,612	)								(525,612	)
Effect of translation		12,196,546			(9,086,269	)		2,139,414			5,249,691
Others	Ps.	(13,767,607	)	Ps.	13,419,051		Ps.	2,139,414		Ps.	1,790,858
Balance at the end of the year		313,282,595			(222,345,621	)		7,083,218			98,020,192
Less short-term portion		(152,448	)								(152,448	)
Non-current obligation	Ps.	313,130,147		Ps.	(222,345,621)		Ps.	7,083,218		Ps.	97,867,744

	At December 31, 2017
	DBO			Plan Assets			Effect of asset celling			Net employee benefit liability
Balance at the beginning of the year	Ps.	313,282,595		Ps.	(222,345,621	)	Ps.	7,083,218		Ps.	98,020,192
Current service cost		4,285,693									4,285,693
Interest cost on projected benefit obligation		28,922,385									28,922,385
Expected return on plan assets					(20,916,104	)					(20,916,104	)
Changes in the asset ceiling during the period and others								716,330			716,330
Past service costs and other					53,032						53,032
Actuarial gain for changes in experience		(35,145	)								(35,145	)
Actuarial gain from changes in demographic assumptions		(85	)								(85	)
Actuarial gain from changes in financial assumptions		(4,294	)								(4,294	)
Net period cost	Ps.	33,168,554		Ps.	(20,863,072	)	Ps.	716,330		Ps.	13,021,812
Actuarial loss for changes in experience		11,671,860									11,671,860
Actuarial gain from changes in demographic assumptions		(381,172	)								(381,172	)
Actuarial loss from changes in financial assumptions		2,438,078									2,438,078
Changes in the asset ceiling during the period and others								(856,188	)		(856,188	)
Return on plan assets greater than discount rate					(2,483,430	)					(2,483,430	)
Recognized in other comprehensive income	Ps.	13,728,766		Ps.	(2,483,430	)	Ps.	(856,188	)	Ps.	10,389,148
Contributions made by plan participants		198,713			(198,713	)					—
Contributions to the pension plan made by the Company					(2,697,621	)					(2,697,621	)
Benefits paid		(18,841,754	)		18,841,754						—
Payments to employees		(9,843,743	)								(9,843,743	)
Effect of translation		(2,579,506	)		2,058,099			(423,800	)		(945,207	)
Others	Ps.	(31,066,290	)	Ps.	18,003,519		Ps.	(423,800	)	Ps.	(13,486,571	)
Balance at the end of the year		329,113,625			(227,688,604	)		6,519,560			107,944,581
Less short-term portion		(172,406	)								(172,406	)
Non-current obligation	Ps.	328,941,219		Ps.	(227,688,604)		Ps.	6,519,560		Ps.	107,772,175

	At December 31, 2018
	DBO			Plan Assests			Effect of asset celling			Net employee benefit liability
Balance at the beginning of the year	Ps.	329,113,625		Ps.	(227,688,604	)	Ps.	6,519,560		Ps.	107,944,581
Current service cost		3,322,813									3,322,813
Interest cost on projected benefit obligation		30,185,257									30,185,257
Expected return on plan assets					(20,804,104	)					(20,804,104	)
Changes in the asset ceiling during the period and others								587,373			587,373
Past service costs and other					157,765						157,765
Actuarial gain for changes in experience		(7,222	)								(7,222	)
Actuarial loss from changes in demographic assumptions		134,625									134,625
Actuarial gain from changes in financial assumptions		(24,890	)								(24,890	)
Net period cost	Ps.	33,610,583		Ps.	(20,646,339	)	Ps.	587,373		Ps.	13,551,617
Actuarial gain for changes in experience		(21,283,470	)								(21,283,470	)
Actuarial loss from changes in demographic assumptions		68,482									68,482
Actuarial gain from changes in financial assumptions		(1,246,539	)								(1,246,539	)
Changes in the asset ceiling during the period and others								(1,055,409	)		(1,055,409	)
Return on plan assets greater than discount rate					23,503,296						23,503,296
Recognized in other comprehensive income	Ps.	(22,461,527	)	Ps.	23,503,296		Ps.	(1,055,409	)	Ps.	(13,640	)
Contributions made by plan participants		173,722			(173,722	)					—
Contributions to the pension plan made by the Company					(1,565,792	)					(1,565,792	)
Benefits paid		(19,546,541	)		19,546,541						—
Payments to employees		(10,651,938	)								(10,651,938	)
Effect of translation		(3,535,477	)		3,353,498			(963,981	)		(1,145,960	)
Others	Ps.	(33,560,234	)	Ps.	21,160,525		Ps.	(963,981	)	Ps.	(13,363,690	)
Balance at the end of the year		306,702,447			(203,671,122	)		5,087,543			108,118,868
Less short-term portion		(212,141	)								(212,141	)
Non-current obligation	Ps.	306,490,306		Ps.	(203,671,122	)	Ps.	5,087,543		Ps.	107,906,727

Schedule of Plan Assets Invested

Plan assets are invested in:

	At December 31
	2017						2018
	Puerto Rico		Brazil		Mexico		Puerto Rico		Brazil		Mexico
Equity instruments		37%		6%		61%		37%		—		39%
Debt instruments		61%		88%		39%		60%		94%		61%
Others		2%		6%		—		3%		6%		—
		100%		100%		100%		100%		100%		100%

Summary of Assumptions Used in Determining the Net Period Cost

The assumptions used in determining the net period cost were as follows:

	2016											2017									2018
	Puerto Rico			Brazil			Mexico			Europe		Puerto Rico		Brazil			Mexico		Europe		Puerto Rico		Brazil			Mexico		Europe
Discount rate and long- term rate return		4.16	%		10.84	%		10.70	%		1.0%, 1.5% & 1.75%		3.61%		10.18	%		10.70%		1.0%,    1.5% & 2.00%		4.45%		9.10	%		11.81%		1.25%,    1.75% & 2.00%
Rate of future salary increases		3.50	%		4.85	%		4.50	%		3.0.%,      3.9% &   4.4%		2.75%		4.50	%		4.50%		3.0.%,    3.5% & 4.4%		2.75%		4.00	%		3.55%		3.0.%,    3.5% & 4.4%
Percentage of increase in health care costs for the coming year		4.20	%		11.35	%							3.57%		11.00	%						3.87%		10.50	%
Year to which this level will be maintained		N/A			2017								N/A		2028							N/A		2029
Rate of increase of pensions								3.83	%		1.60%							3.83%		1.60%							3.47%		1.60%
Employee turnover rate*											0.0%-1.88%									0.0%-1.72%									0.0%-1.51%

* Depending on years of service

Summary of Increase (Decrease) Would Have Resulted in the DBO Pension and Other Benefits

The increase (decrease) would have resulted in the DBO pension and other benefits at December 31, 2018 are as follows:

	-100 points			+100 points
Discount rate	Ps.	37,185,664		Ps.	(38,604,684	)
Health care cost trend rate	Ps.	(651,697	)	Ps.	761,278

Summary of Long-Term Direct Employee Benefits

Long- term direct employee benefits

Balance at December 31, 2016

Applications

Balance at December 31, 2017

Effect of translation

Increase of the year

Payments

Reversals

Long-term direct employee benefits

Ps.

11,251,499

Ps.

795,581

Ps.

771,274

Ps.

(2,077,632

)

Ps.

(582,686

)

Ps.

10,158,036

Balance at December 31, 2017

Applications

Balance at December 31, 2018

Effect of translation

Increase of the year

Payments

Reversals

Long-term direct employee benefits

Ps.

10,158,036

Ps.

(493,795

)

Ps.

1,750,831

Ps.

(2,079,880

)

Ps.

(1,223,414

)

Ps.

8,111,778

 

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Financial Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Summary of Categorization of the Financial Instruments, Excluding Cash and Cash Equivalents

Set out below is the categorization of the financial instruments, excluding cash and cash equivalents, held by the Company as of December 31, 2017 and 2018:

	December 31, 2017
	Loans and Receivables		Fair value through profit or loss		Fair value through OCI
Financial Assets:
Equity investments at fair value through OCI and other short term investments	Ps.	12,438,019	Ps.	—	Ps.	46,682,657
Accounts receivable from subscribers, distributors, contractual assets and other		163,085,537		—		—
Related parties		868,230		—		—
Derivative financial instruments		—		8,037,384		—
Total	Ps.	176,391,786	Ps.	8,037,384	Ps.	46,682,657
Financial Liabilities:
Debt	Ps.	697,884,899	Ps.	—	Ps.	—
Accounts payable		212,673,407		—		—
Related parties		2,540,412		—		—
Derivative financial instruments		—		14,359,460		—
Total	Ps.	913,098,718	Ps.	14,359,460	Ps.	—

Summary of Fair Value for the Financial Assets (Excluding Cash and Cash Equivalents) and Financial Liabilities

The fair value for the financial assets (excluding cash and cash equivalents) and financial liabilities shown in the consolidated statements of financial position at December 31, 2017 and 2018 is as follows:

	Measurement of fair value at December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Equity investments at fair value through OCI and other short-term investments	Ps.	46,682,657	Ps.	12,438,019	Ps.	—	Ps.	59,120,676
Derivative financial instruments		—		8,037,384		—		8,037,384
Pension plan assets		218,518,358		9,039,270		130,976		227,688,604
Total	Ps.	265,201,015	Ps.	29,514,673	Ps.	130,976	Ps.	294,846,664
Liabilities:
Debt	Ps.	691,769,785	Ps.	63,147,153	Ps.	—	Ps.	754,916,938
Derivative financial instruments		—		14,359,460		—		14,359,460
Total	Ps.	691,769,785	Ps.	77,506,613	Ps.	—	Ps.	769,276,398

	Measurement of fair value at December 31, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Equity investments at fair value through OCI and other short-term investments	Ps.	39,028,083	Ps.	9,987,851	Ps.	—	Ps.	49,015,934
Derivative financial instruments		—		5,287,548		—		5,287,548
Pension plan assets		186,557,731		17,096,344		17,047		203,671,122
Total	Ps.	225,585,814	Ps.	32,371,743	Ps.	17,047	Ps.	257,974,604
Liabilities:
Debt	Ps.	594,713,342	Ps.	99,723,251	Ps.	—	Ps.	694,436,593
Derivative financial instruments				17,107,579		—		17,107,579
Total	Ps.	594,713,342	Ps.	116,830,830	Ps.	—	Ps.	711,544,172

Summary of Changes in Liabilities Arising From Financing Activities

Changes in liabilities arising from financing activities

	At January 1, 2017		Cash flow			Foreign currency exchange and other			At December 31, 2017
Total liabilities from financing activities	Ps.	707,801,403	Ps.	(27,433,489	)	Ps.	17,516,985		Ps.	697,884,899
	At January 1, 2018		Cash flow			Foreign currency exchange and other			At December 31, 2018
Total liabilities from financing activities	Ps.	697,884,899	Ps.	(34,050,923	)	Ps.	(24,911,523	)	Ps.	638,922,453

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Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Summary of Computation of The Basic and Diluted Earnings

The following table shows the computation of the basic and diluted earnings per share:

	For the years ended December 31,
	2016		2017		2018
Net profit for the period attributable to equity holders of the parent	Ps.	8,649,427	Ps.	29,325,921	Ps.	52,566,197
Weighted average shares (in millions)		65,693		65,909		66,055
Earnings per share attributable to equity holders of the parent		0.13		0.44		0.79

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Components of other comprehensive (loss) income (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Summary of Movement on the Components of the Other Comprehensive (Loss) Income

The movement on the components of the other comprehensive (loss) income for the years ended December 31, 2016, 2017 and 2018 is as follows:

	For the years ended December 31,
	2016			2017			2018
Controlling interest:
Valuation of the derivative financial instruments, net of deferred taxes	Ps.	48,496		Ps.	12,292		Ps.	—
Unrealized (loss) gain on equity investments at fair value, net of deferred taxes		(6,673,731	)		622,424			(3,765,688	)
Translation effect of foreign entities		104,178,880			(21,683,333	)		(61,223,458	)
Remeasurement of defined benefit plan, net of deferred taxes		14,771,770			(7,075,606	)		652,722
Non-controlling interest of the items above		3,322,090			3,402,973			(2,986,018	)
Other comprehensive (loss) income	Ps.	115,647,505		Ps.	(24,721,250	)	Ps.	(67,322,442	)

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Valuation of derivatives, interest cost from labor obligations and other financial items, net (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Schedule of Valuation of Derivatives and Other Financial Items

For the years ended December 31, 2016, 2017 and 2018, valuation of derivatives and other financial items are as follows:

	For the years ended December 31,
	2016			2017			2018
Controlling interest:
(Loss) gain in valuation of derivatives, net	Ps.	(9,622,233	)	Ps.	8,192,567		Ps.	(4,686,407	)
Capitalized interest expense (Note 10 d)		2,861,307			2,875,034			2,020,288
Commissions		(2,034,972	)		(1,263,701	)		(1,901,473	)
Interest cost of labor obligations (Note 17)		(9,178,513	)		(8,722,611	)		(9,968,526	)
Interest expense on taxes		(245,922	)		(1,503,981	)		(555,921	)
Dividend received (Note 4)		5,740,092			2,385,559			2,605,333
Gain on net monetary positions (Note 2i, c)		—			—			4,429,145
Other financial cost		(3,745,600	)		(3,906,627	)		(2,118,755	)
Total	Ps.	(16,225,841	)	Ps.	(1,943,760	)	Ps.	(10,176,316	)

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Segments (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Summary of Operating Segments

	Mexico		Telmex		Brazil			Southern Cone			Colombia			Andean		Central America		U.S.A.		Caribbean		Europe			Eliminations			Consolidated total
At December 31 2016 (in Ps.):
External revenues		187,127,903		93,343,612		193,796,237			71,553,356			67,330,768			55,825,972		42,131,666		140,856,365		36,467,781		86,978,828			—			975,412,488
Intersegment revenues		16,438,858		8,872,248		3,560,388			776,719			257,767			304,834		289,465		—		30,210		—			(30,530,489	)		—
Total revenues		203,566,761		102,215,860		197,356,625			72,330,075			67,588,535			56,130,806		42,421,131		140,856,365		36,497,991		86,978,828			(30,530,489	)		975,412,488
Depreciation and amortization		16,451,496		17,150,013		47,170,935			9,739,634			11,283,749			7,764,474		10,474,681		1,073,623		5,225,498		22,525,050			(333,232	)		148,525,921
Operating income		48,219,505		12,275,892		6,325,323			8,317,053			11,209,959			6,086,638		3,830,974		1,220,601		6,143,183		5,388,595			592,587			109,610,310
Interest income		28,659,372		303,915		3,747,684			2,649,539			104,304			944,945		462,779		239,797		691,132		286,784			(33,897,656	)		4,192,595
Interest expense		32,004,944		1,135,552		22,970,335			5,049,457			1,079,989			1,147,380		411,597		—		143,322		2,953,033			(33,033,597	)		33,862,012
Income tax		2,502,242		921,803		(4,294,040	)		2,021,090			4,456,750			1,768,066		3,291,776		767,295		2,542,080		(2,578,206	)		—			11,398,856
Equity interest in net income  (loss) of associated companies		67,472		116,368		(270	)		(23,319	)		—			—		171		—		—		29,528			—			189,950
Net profit (loss) attributable to equity holders of the parent		378,150		902,282		(10,357,493	)		3,765,015			4,022,633			3,621,863		538,890		987,790		3,318,960		7,065,769			(5,594,432	)		8,649,427
Assets by segment		1,070,598,204		161,133,722		461,831,754			140,617,162			103,361,235			113,839,981		80,832,029		42,812,349		93,941,695		227,288,156			(981,214,013	)		1,515,042,274
Plant, property and equipment, net		64,893,242		112,220,236		203,270,555			67,023,143			59,690,886			37,716,772		41,808,573		1,949,166		33,854,428		78,763,065			—			701,190,066
Goodwill		27,186,328		213,926		26,106,622			3,006,448			14,659,891			5,948,335		5,652,268		3,464,217		14,186,723		52,207,877			—			152,632,635
Trademarks, net		615,318		307,881		366,727			—			194			—		—		788,228		284,665		10,203,880			—			12,566,893
Licenses and rights, net		5,887,092		42,867		41,496,209			8,760,860			4,603,793			12,882,210		3,993,120		—		7,694,798		30,670,315			—			116,031,264
Investment in associated companies		7,605,220		2,218,824		699			81,284			470			—		17,390		—		—		1,072,778			(7,393,181	)		3,603,484
Liabilities by segments		798,044,609		117,663,161		349,915,118			124,149,687			40,811,337			52,949,608		38,095,161		41,369,767		44,790,656		121,928,202			(485,698,799	)		1,244,018,507
At December 31, 2017 (in Ps.):
External revenues		190,022,612		89,731,238		210,536,673			81,092,885			72,435,460			56,393,595		44,094,835		148,589,487		35,092,578		93,644,172			—			1,021,633,535
Intersegment revenues		16,748,428		8,753,525		4,785,601			1,250,983			304,555			177,856		187,086		44		122,656		—			(32,330,734	)		—
Total revenues		206,771,040		98,484,763		215,322,274			82,343,868			72,740,015			56,571,451		44,281,921		148,589,531		35,215,234		93,644,172			(32,330,734	)		1,021,633,535
Depreciation and amortization		17,030,251		18,902,238		51,486,652			10,639,591			12,373,790			8,328,705		9,668,439		1,594,727		5,349,757		25,222,962			(422,170	)		160,174,942
Operating income (loss)		50,666,028		7,921,524		11,601,369			11,676,427			(4,704,165	)		5,650,477		5,252,401		2,915,123		4,752,168		4,523,857			(111,906	)		100,143,303
Interest income		30,083,437		619,748		3,792,242			2,884,613			211,521			1,793,974		1,064,992		394,196		1,111,980		307,021			(39,338,076	)		2,925,648
Interest expense		32,185,868		1,028,593		23,578,083			4,637,989			1,955,688			1,573,929		485,684		—		377,727		2,035,716			(37,558,496	)		30,300,781
Income tax		18,142,482		387,145		(2,991,377	)		3,535,302			(1,874,594	)		1,806,085		2,025,618		1,803,555		3,529,253		(1,417,358	)		(4,600	)		24,941,511
Equity interest in net income (loss) of associated companies		99,044		16,564		(232	)		(9,801	)		—			—		—		—		—		(14,190	)		—			91,385
Net profit (loss) attributable to equity holders of the parent		26,321,442		184,387		(6,617,381	)		4,421,938			(6,209,530	)		1,595,382		3,713,301		1,793,875		1,262,073		5,656,132			(2,795,698	)		29,325,921
Assets by segment		1,033,036,406		170,402,561		428,281,963			133,136,177			108,362,023			113,478,626		81,529,691		40,761,830		88,672,466		203,858,243			(915,308,134	)		1,486,211,852
Plant, property and equipment, net		59,137,555		109,713,770		187,459,628			69,006,093			57,060,931			35,930,966		39,050,481		1,693,642		32,173,524		85,116,608			—			676,343,198
Goodwill		27,102,384		213,926		24,708,739			3,073,444			13,981,033			6,113,495		5,597,990		3,341,956		14,186,723		53,143,542			—			151,463,232
Trademarks, net		406,723		274,786		246,557			—			—			—		—		631,024		262,641		8,116,076			—			9,937,807
Licenses and rights, net		11,457,720		13,175		35,662,305			8,885,086			4,197,498			11,295,202		3,376,106		—		7,276,039		31,141,255			—			113,304,386
Investment in associated companies		469,662		546,872		640			63,110			451			—		16,999		—		—		806,950			1,830,488			3,735,172
Liabilities by segments		794,598,013		133,428,178		322,620,030			119,123,646			54,756,152			48,656,628		35,501,900		38,249,957		43,978,410		119,240,533			(484,575,112	)		1,225,578,335

At December 31, 2018 (in Ps.):
External revenues	207,610,244		86,339,289		188,712,666		89,149,978		75,460,428	55,633,192	44,883,585	153,266,315	36,435,541	100,716,443		—		1,038,207,681
Intersegment revenues	16,946,543		9,741,908		4,593,760		13,200,358		344,517	154,082	149,445	—	204,294	—		(45,334,907	)	—
Total revenues	224,556,787		96,081,197		193,306,426		102,350,336		75,804,945	55,787,274	45,033,030	153,266,315	36,639,835	100,716,443		(45,334,907	)	1,038,207,681
Depreciation and amortization	17,619,342		18,358,248		42,857,751		13,526,361		13,464,867	8,516,960	8,940,655	1,545,395	5,036,831	26,838,972		(992,802	)	155,712,580
Operating income (loss)	57,450,599		8,085,764		23,494,903		16,975,797		14,388,552	5,003,915	4,867,763	2,665,270	5,811,846	4,731,562		(3,918,800	)	139,557,171
Interest income	26,578,280		420,380		11,303,888		2,251,474		1,013,839	1,666,879	1,566,086	559,548	1,458,874	122,133		(36,295,212	)	10,646,169
Interest expense	32,526,258		1,153,913		20,377,191		4,338,941		2,913,881	1,719,663	509,081	—	561,867	1,973,431		(34,302,793	)	31,771,433
Income tax	28,842,505		643,377		4,026,444		1,390,039		2,251,877	2,498,666	2,533,600	810,898	2,774,204	707,093		(1,624	)	46,477,079
Equity interest in net income (loss) of associated companies	(5,962	)	44,965		(152	)	(20,871	)	—	—	—	—	—	(17,713	)	—		267
Net profit (loss) attributable to equity holders of the parent	23,185,029		(2,201,572	)	3,530,653		6,065,703		9,165,801	1,730,933	2,821,733	2,820,505	3,644,697	3,809,694		(2,006,979	)	52,566,197
Assets by segment	970,564,314		174,461,398		390,791,480		127,946,573		111,975,598	96,347,779	81,640,157	38,814,907	102,531,547	186,135,358		(851,985,719	)	1,429,223,392
Plant, property and equipment, net	56,056,634		103,737,293		173,197,708		62,988,635		51,422,548	35,800,477	37,146,601	1,356,237	38,011,242	80,421,642		(138,297	)	640,000,720
Goodwill	27,104,632		215,381		21,388,124		2,796,759		12,770,380	5,242,365	5,466,871	3,328,533	14,186,723	53,066,729		—		145,566,497
Trademarks, net	227,774		243,556		124,910		—		—	—	—	507,033	249,984	3,313,948		—		4,667,205
Licenses and rights, net	10,573,147		—		25,873,910		12,555,496		3,400,235	9,651,582	3,605,416	—	10,294,336	27,344,273		—		103,298,395
Investment in associated companies	5,621,661		563,667		543		20,697		412	—	24,262	—	—	748,674		(3,847,209	)	3,132,707
Liabilities by segments	748,965,728		136,993,838		298,308,084		94,550,901		56,211,438	50,064,761	28,592,953	35,552,678	58,716,154	117,214,746		(441,820,311	)	1,183,350,970

XML

Supplemental Guarantor Information (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Schedule of Consolidating Condensed Financial Information

The Company’s consolidating condensed financial information for the (i) Company; (ii) its wholly-owned guarantor subsidiary Telcel (on standalone basis), which is a wholly and unconditional guarantor under the Senior Notes; (iii) the combined non-guarantor subsidiaries; iv) eliminations and v) the Company’s consolidated financial statements are as follows:

Condensed consolidating statements of financial position

	As of December 31, 2017
	Parent		Wholly-owned Guarantor Subsidiary		Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Assets:
Cash and cash equivalents	Ps.	7,018,559	Ps.	3,553,352	Ps.	13,698,562		Ps.	—		Ps.	24,270,473
Equity investments at fair value through OCI and other short-term investments		10,303,535		—		48,817,141			—			59,120,676
Accounts receivable and derivative financial instruments		9,874,652		24,064,936		167,873,940			—			201,813,528
Related parties		208,240,067		957,704		503,895,549			(712,225,090	)		868,230
Inventories, net		264,649		16,700,837		21,844,079			—			38,809,565
Other current assets		17,805,747		922,245		(1,375,246	)		—			17,352,746
Property, plant and equipment, Net		1,996,721		24,287,904		650,058,573			—			676,343,198
Investments in associated companies		747,771,790		35,569,788		3,457,152			(783,063,558	)		3,735,172
Intangible assets and other non- current assets, net		4,104,268		73,557,904		386,236,092			—			463,898,264
Total assets	Ps.	1,007,379,988	Ps.	179,614,670	Ps.	1,794,505,842		Ps.	(1,495,288,648	)	Ps.	1,486,211,852
Liabilities:
Short-term debt and current portion of long-term debt	Ps.	34,345,398	Ps.	—	Ps.	17,400,443		Ps.	—		Ps.	51,745,841
Current liabilities		161,940,198		41,304,845		797,880,314			(639,534,701	)		361,590,656
Long-term debt		547,728,176		—		98,410,882			—			646,139,058
Other non-current liabilities		69,201,904		132,728,838		40,909,234			(76,737,196	)		166,102,780
Total liabilities	Ps.	813,215,676	Ps.	174,033,683	Ps.	954,600,873		Ps.	(716,271,897	)	Ps.	1,225,578,335
Equity attributable to equity holders of the parent		194,164,312		5,580,987		741,988,231			(747,569,218	)		194,164,312
Non-controlling interests		—		—		97,916,738			(31,447,533	)		66,469,205
Total equity		194,164,312		5,580,987		839,904,969			(779,016,751	)		260,633,517
Total liabilities and equity	Ps.	1,007,379,988	Ps.	179,614,670	Ps.	1,794,505,842		Ps.	(1,495,288,648	)	Ps.	1,486,211,852

Condensed consolidating statements of financial position

	As of December 31, 2018
	Parent		Wholly-owned Guarantor Subsidiary		Combined non-guarantor Subsidiaries		Eliminations			Consolidated Total
Assets:
Cash and cash equivalents	Ps.	8,335,101	Ps.	1,745,895	Ps.	11,578,966	Ps.	—		Ps.	21,659,962
Equity investments at fair value through OCI and other short-term investments		9,511,368		—		39,504,566		—			49,015,934
Accounts receivable and derivative financial instruments		31,462,176		35,671,582		154,380,710		—			221,514,468
Related parties		199,566,671		1,144,534		560,142,367		(759,589,967	)		1,263,605
Inventories, net		215,055		18,495,502		21,594,805		—			40,305,362
Other current assets		—		1,218,764		14,077,429		—			15,296,193
Property, plant and equipment, Net		1,340,358		23,192,546		615,467,816		—			640,000,720
Investments in associated companies		734,944,344		88,070,845		16,926,615		(836,809,097	)		3,132,707
Intangible assets and other non- current assets, net		4,113,902		26,176,381		406,744,158		—			437,034,441
Total assets	Ps.	989,488,975	Ps.	195,716,049	Ps.	1,840,417,432	Ps.	(1,596,399,064	)	Ps.	1,429,223,392
Liabilities:
Short-term debt and current portion of long-term debt	Ps.	52,827,411	Ps.	—	Ps.	43,403,223	Ps.	—		Ps.	96,230,634
Current liabilities		153,489,868		72,282,238		597,174,025		(452,085,876	)		370,860,255
Long-term debt		456,918,590		—		85,773,229		—			542,691,819
Other non-current liabilities		130,257,461		109,368,210		242,232,897		(308,290,306	)		173,568,262
Total liabilities	Ps.	793,493,330	Ps.	181,650,448	Ps.	968,583,374	Ps.	(760,376,182	)	Ps.	1,183,350,970
Equity attributable to equity holders of the parent		195,995,645		14,065,601		760,485,332		(774,550,933	)		195,995,645
Non-controlling interests		—		—		111,348,726		(61,471,949	)		49,876,777
Total equity		195,995,645		14,065,601		871,834,058		(836,022,882	)		245,872,422
Total liabilities and equity	Ps.	989,488,975	Ps.	195,716,049	Ps.	1,840,417,432	Ps.	(1,596,399,064	)	Ps.	1,429,223,392

Condensed consolidating statements of comprehensive income

For the year ended December 31, 2016

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Total revenues	Ps.	137,236,301		Ps.	173,714,225		Ps.	857,137,822		Ps.	(192,675,860	)	Ps.	975,412,488
Total cost and operating expenses		117,835,634			160,949,691			778,483,079			(191,466,226	)		865,802,178
Operating income		19,400,667			12,764,534			78,654,743			(1,209,634	)		109,610,310
Interest (expense) income, net		(12,331,095	)		97,314			(17,207,855	)		(227,781	)		(29,669,417	)
Foreign currency exchange (loss) gain, net		(46,625,392	)		(5,853,669	)		12,051,654			—			(40,427,407	)
Other financing cost, net		(10,475,673	)		(11,203,533	)		5,453,365			—			(16,225,841	)
Income tax		(7,712,179	)		1,139,631			17,971,404			—			11,398,856
Equity interest in net income of associated companies		50,968,741			(1,342,073	)		(6,677,059	)		(42,759,659	)		189,950
Net profit (loss) for year	Ps.	8,649,427		Ps.	(6,677,058	)	Ps.	54,303,444		Ps.	(44,197,074	)	Ps.	12,078,739
Distribution of the net profit (loss) to:
Equity owners of holding company		8,649,427			(6,677,058	)		50,049,280			(43,372,222	)		8,649,427
Non-controlling interest		—			—			4,254,164			(824,852	)		3,429,312
Net profit (loss)	Ps.	8,649,427		Ps.	(6,677,058	)	Ps.	54,303,444		Ps.	(44,197,074	)	Ps.	12,078,739
Other comprehensive income items:
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities		104,178,880			755,978			108,291,984			(105,728,134	)		107,498,708
Effect of fair value of derivatives, net of deferred taxes		48,496			—			30,206			(29,573	)		49,129
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect		14,771,770			(12,300	)		7,477,926			(7,463,997	)		14,773,399
Equity investments at fair value		(6,673,731	)		—			(6,673,731	)		6,673,731			(6,673,731	)
Total other comprehensive income items for the period	Ps.	112,325,415		Ps.	743,678		Ps.	109,126,385		Ps.	(106,547,973	)	Ps.	115,647,505
Total comprehensive income for the period	Ps.	120,974,842		Ps.	(5,933,380	)	Ps.	163,429,829		Ps.	(150,745,047	)	Ps.	127,726,244
Comprehensive income for the period attributable to:
Equity holders of the parent	Ps.	120,974,842		Ps.	(5,933,380	)	Ps.	150,900,984		Ps.	(144,967,604	)	Ps.	120,974,842
Non-controlling interests		—			—			12,528,845			(5,777,443	)		6,751,402
	Ps.	120,974,842		Ps.	(5,933,380	)	Ps.	163,429,829		Ps.	(150,745,047	)	Ps.	127,726,244

Condensed consolidating statements of comprehensive income

For the year ended December 31, 2017

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Total revenues	Ps.	160,057,511		Ps.	170,991,493		Ps.	887,951,615		Ps.	(197,367,084	)	Ps.	1,021,633,535
Total cost and operating expenses		123,548,341			163,152,868			832,429,198			(197,640,175	)		921,490,232
Operating income		36,509,170			7,838,625			55,522,417			273,091			100,143,303
Interest (expense) income, net		(16,779,235	)		(12,365,116	)		1,810,523			(41,305	)		(27,375,133	)
Foreign currency exchange (loss) gain, net		(15,223,111	)		1,320,667			83,493			—			(13,818,951	)
Other financing cost, net		6,775,455			—			(8,719,215	)		—			(1,943,760	)
Income tax		14,201,399			1,386,519			9,353,593			—			24,941,511
Equity interest in net income of associated companies		32,245,041			(8,977,146	)		(13,466,845	)		(9,709,665	)		91,385
Net profit (loss) for year	Ps.	29,325,921		Ps.	(13,569,489	)	Ps.	25,876,780		Ps.	(9,477,879	)	Ps.	32,155,333
Distribution of the net profit (loss) to:
Equity owners of holding company		29,325,921			(13,569,489	)		21,417,549			(7,848,060	)		29,325,921
Non-controlling interest		—			—			4,459,231			(1,629,819	)		2,829,412
Net profit (loss)	Ps.	29,325,921		Ps.	(13,569,489	)	Ps.	25,876,780		Ps.	(9,477,879	)	Ps.	32,155,333
Other comprehensive income items:
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities		(21,683,333	)		(1,897,936	)		(18,309,877	)		23,581,269			(18,309,877	)
Effect of fair value of derivatives, net of deferred taxes		12,292			—			12,292			(12,292	)		12,292
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect		(7,075,606	)		(8,439	)		(7,046,089	)		7,084,045			(7,046,089	)
Equity investments at fair value		622,424			—			622,424			(622,424	)		622,424
Total other comprehensive income items for the period	Ps.	(28,124,223	)	Ps.	(1,906,375	)	Ps.	(24,721,250	)	Ps.	30,030,598		Ps.	(24,721,250	)
Total comprehensive income for the period	Ps.	1,201,698		Ps.	(15,475,864	)	Ps.	1,155,530		Ps.	20,552,719		Ps.	7,434,083
Comprehensive income for the period attributable to:
Equity holders of the parent	Ps.	1,201,698		Ps.	(15,475,864	)	Ps.	(5,076,855	)	Ps.	20,552,719		Ps.	1,201,698
Non-controlling interests		—			—			6,232,385			—			6,232,385
	Ps.	1,201,698		Ps.	(15,475,864	)	Ps.	1,155,530		Ps.	20,552,719		Ps.	7,434,083

Condensed consolidating statements of comprehensive income

For the year ended December 31, 2018

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Total revenues	Ps.	170,887,145		Ps.	190,924,413		Ps.	890,427,121		Ps.	(214,030,998	)	Ps.	1,038,207,681
Total cost and operating expenses		129,039,749			183,542,058			799,085,884			(213,017,181	)		898,650,510
Operating income		41,847,396			7,382,355			91,341,237			(1,013,817	)		139,557,171
Interest (expense) income, net		(24,831,538	)		(11,033,069	)		14,757,906			(18,563	)		(21,125,264	)
Foreign currency exchange (loss) gain, net		11,805,283			626,304			(19,693,543	)		—			(7,261,956	)
Other financing cost, net		(4,443,892	)		—			(5,732,424	)		—			(10,176,316	)
Income tax		17,754,010			798,639			27,924,430			—			46,477,079
Equity interest in net income of associated companies		46,101,188			1,325,723			(2,497,059	)		(44,929,585	)		267
Net profit (loss) for year	Ps.	52,724,427		Ps.	(2,497,326	)	Ps.	50,251,687		Ps.	(45,961,965	)	Ps.	54,516,823
Distribution of the net profit (loss) to:
Equity owners of holding company		52,724,427			(2,497,326	)		46,641,696			(44,302,600	)		52,566,197
Non-controlling interest		—			—			3,609,991			(1,659,365	)		1,950,626
Net profit (loss)	Ps.	52,724,427		Ps.	(2,497,326	)	Ps.	50,251,687		Ps.	(45,961,965	)	Ps.	54,516,823
Other comprehensive income items:
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities		(61,223,458	)		(724,521	)		(64,314,032	)		61,947,979			(64,314,032	)
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect		652,722			(1,603,145	)		757,278			950,423			757,278
Equity investments at fair value		(3,765,688	)		—			(3,765,688	)		3,765,688			(3,765,688	)
Total other comprehensive income items for the period	Ps.	(64,336,424	)	Ps.	(2,327,666	)	Ps.	(67,322,442	)	Ps.	66,664,090		Ps.	(67,322,442	)
Total comprehensive income for the period	Ps.	(11,611,997	)	Ps.	(4,824,992	)	Ps.	(17,070,755	)	Ps.	20,702,125		Ps.	(12,805,619	)
Comprehensive income for the period attributable to:
Equity holders of the parent	Ps.	(11,611,997	)	Ps.	(4,824,992	)	Ps.	(16,035,363	)	Ps.	20,702,125		Ps.	(11,770,227	)
Non-controlling interests		—			—			(1,035,392	)		—			(1,035,392	)
	Ps.	(11,611,997	)	Ps.	(4,824,992	)	Ps.	(17,070,755	)	Ps.	20,702,125		Ps.	(12,805,619	)

Condensed consolidating statements of cash flows

For the year ended December 31, 2016

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Operating activities:
Profit before taxes	Ps.	937,247		Ps.	(5,537,427	)	Ps.	28,077,775		Ps.	—		Ps.	23,477,595
Non-cash items		(997,587	)		19,800,396			209,821,118			—			228,623,927
Changes in working capital:		74,520,320			9,130,768			(93,359,195	)		(6,595,361	)		(16,303,468	)
Net cash flows provided by operating activities	Ps.	74,459,980		Ps.	23,393,737		Ps.	144,539,698		Ps.	(6,595,361	)	Ps.	235,798,054
Investing activities:
Purchase of property, plant and equipment		—			(7,860,232	)		(130,846,925	)		—			(138,707,157	)
Acquisition of intangibles		—			(4,947,506	)		(11,369,232	)		—			(16,316,738	)
Dividends received from associates		21,950			—			5,988,938			(270,796	)		5,740,092
Proceeds from sale of plant, property and equipment		20,078			—			95,522			—			115,600
Acquisition of business, net of cash acquired		—			(2,796,254	)		(1,823,813	)		2,796,254			(1,823,813	)
Partial sale of shares of associate company		756,444			—			2,796,254			(3,552,698	)		—
Investment in associates companies		—			663,203			(666,690	)		—			(3,487	)
Net cash flows provided by (used in) investing activities	Ps.	798,472		Ps.	(14,940,789	)	Ps.	(135,825,946	)	Ps.	(1,027,240	)	Ps.	(150,995,503	)
Financing activities:
Bank loans, net		(39,598,698	)		—			(21,792,115	)		—			(61,390,813	)
Acquisition of no controlling interest		—			—			(2,280,278	)		—			(2,280,278	)
Interest paid		(24,826,139	)		(7,972,827	)		(5,922,267	)		6,595,361			(32,125,872	)
Paid-In capital		—			—			(756,444	)		756,444			—
Sale of shares of subsidiaries		—			—			6,323,336			—			6,323,336
Repurchase of shares and others		(7,092,385	)		—			71,138			—			(7,021,247	)
Payment of dividends		(13,437,168	)		—			(643,585	)		270,796			(13,809,957	)
Derivative financial instruments		—			—			(351,213	)		—			(351,213	)
Net cash flows (used in) financing activities	Ps.	(84,954,390	)	Ps.	(7,972,827	)	Ps.	(25,351,428	)	Ps.	7,622,601		Ps.	(110,656,044	)
Net (decrease) increase in cash and cash equivalents		(9,695,938	)		480,121			(16,637,676	)		—			(25,853,493	)
Adjustment to cash flow for exchange rate differences		—			—			3,911,844			—			3,911,844
Cash and cash equivalents at beginning of the period		13,803,584			1,468,036			29,888,412			—			45,160,032
Cash and cash equivalents at end of the period	Ps.	4,107,645		Ps.	1,948,159		Ps.	17,162,579		Ps.	—		Ps.	23,218,383

Condensed consolidating statements of cash flows

For the year ended December 31, 2017

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Operating activities:
Profit before taxes	Ps.	43,527,320		Ps.	(12,182,970	)	Ps.	35,230,373		Ps.	(9,477,879	)	Ps.	57,096,844
Non-cash items		(17,017,287	)		30,000,109			171,062,158			11,635,563			195,680,543
Changes in working capital:		(18,973,478	)		(9,486	)		(66,062,629	)		50,040,581			(35,005,012	)
Net cash flows provided by operating activities	Ps.	7,536,555		Ps.	17,807,653		Ps.	140,229,902		Ps.	52,198,265		Ps.	217,772,375
Investing activities:
Purchase of property, plant and equipment		16,526			(5,571,410	)		(113,630,253	)		—			(119,185,137	)
Acquisition of intangibles		—			(3,053,345	)		(14,485,196	)		—			(17,538,541	)
Dividends received from associates		21,465,687			970,000			2,385,559			(22,435,687	)		2,385,559
Proceeds from sale of plant, property and equipment		—			—			133,349			—			133,349
Acquisition of business, net of cash acquired		—			(3,381,505	)		(3,497,288	)		—			(6,878,793	)
Investment in associates companies		—			1,925,898			—			(1,925,898	)		—
Sale of associated company		—			—			340,040			—			340,040
Net cash flows provided by (used in) investing activities	Ps.	21,482,213		Ps.	(9,110,362	)	Ps.	(128,753,789	)	Ps.	(24,361,585	)	Ps.	(140,743,523	)
Financing activities:
Bank loans, net		13,548,138			—			16,382,838			(57,364,465	)		(27,433,489	)
Acquisition of no controlling interest		—			—			(11,930	)		—			(11,930	)
Interest paid		(24,009,216	)		(7,092,098	)		(7,187,225	)		7,092,098			(31,196,441	)
Repurchase of shares and others		(1,240,028	)		—			6,657			—			(1,233,371	)
Payment of dividends		(14,406,748	)		—			(24,120,329	)		22,435,687			(16,091,390	)
Derivative financial instruments		—			—			(71,474	)		—			(71,474	)
Net cash flows used in financing activities	Ps.	(26,107,854	)	Ps.	(7,092,098	)	Ps.	(15,001,463	)	Ps.	(27,836,680	)	Ps.	(76,038,095	)
Net (decrease) increase in cash and cash equivalents		2,910,914			1,605,193			(3,525,350	)		—			990,757
Adjustment to cash flow for exchange rate differences		—			—			61,333			—			61,333
Cash and cash equivalents at beginning of the period		4,107,645			1,948,159			17,162,579			—			23,218,383
Cash and cash equivalents at end of the period	Ps.	7,018,559		Ps.	3,553,352		Ps.	13,698,562		Ps.	—		Ps.	24,270,473

Condensed consolidating statements of cash flows

For the year ended December 31, 2018

	Parent			Wholly-owned Guarantor Subsidiary			Combined non-guarantor Subsidiaries			Eliminations			Consolidated Total
Operating activities:
Profit before taxes	Ps.	70,478,437		Ps.	(1,698,687	)	Ps.	78,176,117		Ps.	(45,961,965	)	Ps.	100,993,902
Non-cash items		(23,099,316	)		20,952,414			149,503,016			39,836,704			187,192,818
Changes in working capital:		(49,040,542	)		(35,329,228	)		(61,332,380	)		105,845,958			(39,856,192	)
Net cash flows provided by operating activities	Ps.	(1,661,421	)	Ps.	(16,075,501	)	Ps.	166,346,753		Ps.	99,720,697		Ps.	248,330,528
Investing activities:
Purchase of property, plant and equipment		(17,709	)		(4,031,228	)		(139,839,096	)		—			(143,888,033	)
Acquisition of intangibles		—			(2,993,373	)		(4,940,274	)		—			(7,933,647	)
Dividends received from associates		24,314,803			—			2,622,237			(24,314,803	)		2,622,237
Proceeds from sale of plant, property and equipment		—			—			178,532			—			178,532
Acquisition of business, net of cash acquired		—			—			(310,604	)		—			(310,604	)
Investment in associates companies		—			(5,092,881	)		—			5,092,881			—
Sale of associated company		—			—			548,484			—			548,484
Net cash flows provided by (used in) investing activities	Ps.	24,297,094		Ps.	(12,117,482	)	Ps.	(141,740,721	)	Ps.	(19,221,922	)	Ps.	(148,783,031	)
Financing activities:
Bank loans, net		24,784,341			—			19,592,788			(78,428,052	)		(34,050,923	)
Acquisition of no controlling interest		—			—			(115,821	)		—			(115,821	)
Interest paid		(24,802,363	)		26,385,526			(6,066,654	)		(26,385,526	)		(30,869,017	)
Repurchase of shares and others		(514,007	)		—			2,586			—			(511,421	)
Payment of dividends		(20,787,102	)		—			(25,897,494	)		24,314,803			(22,369,793	)
Redemption of hybrid bond		—			—			(13,440,120	)		—			(13,440,120	)
Net cash flows used in financing activities	Ps.	(21,319,131	)	Ps.	26,385,526		Ps.	(25,924,715	)	Ps.	(80,498,775	)	Ps.	(101,357,095	)
Net (decrease) increase in cash and cash equivalents		1,316,542			(1,807,457	)		(1,318,683	)		—			(1,809,598	)
Adjustment to cash flow for exchange rate differences		—			—			(800,913	)		—			(800,913	)
Cash and cash equivalents at beginning of the period		7,018,559			3,553,352			13,698,562			—			24,270,473
Cash and cash equivalents at end of the period	Ps.	8,335,101		Ps.	1,745,895		Ps.	11,578,966		Ps.	—		Ps.	21,659,962

XML

Description of the Business and Relevant Events - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018 Country
Disclosure of corporate information [abstract]
Corporate information description	América Móvil, S.A.B. de C.V. and subsidiaries (hereinafter, the “Company”, “América Móvil” or “AMX”) was incorporated under laws of Mexico on September 25, 2000. The Company provides telecommunications services in 25 countries throughout Latin America, the United States, the Caribbean and Europe. These telecommunications services include mobile and fixed-line voice services, wireless and fixed data services, internet access and Pay TV, over the top and other related services. The Company also sells equipment, accessories and computers.
Number of countries in which company operates	25
Number of countries in which company holds license	24

XML

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Schedule of Impact of Adoption IFRS 15 on Statements of Financial Position (Detail) $ in Thousands, $ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Jan. 01, 2018 MXN ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2015 MXN ($)
Current assets:
Subscribers, distributors, recoverable taxes, contract assets and other, net	$ 216,226,920	$ 10,986		$ 193,776,144
Other current assets, net	15,296,193	777		17,352,746
Total current assets	349,055,524	17,734		342,235,218
Non-current assets:
Property, plant and equipment, net	640,000,720	32,516		676,343,198	$ 701,190,066	$ 573,528,878
Liabilities:
Current liabilities	467,090,889	23,731		413,336,497
Deferred income taxes	24,573,441	1,248		11,997,364	14,061,881
Total liabilities	1,183,350,970	60,121		1,225,578,335	1,244,018,507
Total assets	1,429,223,392	72,613		1,486,211,852	1,515,042,274
Equity:
Retained earnings	237,255,485	12,053		171,087,598
Non-controlling interests	49,876,777	2,534		66,469,205
Total equity	245,872,422	12,492		260,633,517	271,023,767	160,854,186
Current liabilities:
Short-term debt and current portion of long-term debt	96,230,634	4,889		51,745,841
Deferred revenues	32,743,843	1,664		34,272,047
Total current liabilities	467,090,889	23,731		413,336,497
Non-current-liabilities:
Long-term debt	542,691,819	27,572		646,139,058
Deferred income taxes	24,573,441	1,248		11,997,364	14,061,881
Other liabilities	173,568,262			166,102,780
Total liabilities	1,183,350,970	60,121		1,225,578,335	1,244,018,507
Total equity	245,872,422	12,492		260,633,517	$ 271,023,767	$ 160,854,186
Total liabilities and equity	1,429,223,392	$ 72,613		$ 1,486,211,852
Increase/(decrease) [member]
Current assets:
Subscribers, distributors, recoverable taxes, contract assets and other, net	30,923,286		$ 31,261,436
Total current assets	30,923,286
Non-current assets:
Subscribers, distributors, recoverable taxes, contract assets and other, net	5,437,263
Liabilities:
Current liabilities	1,095,625		562,651
Deferred income taxes	9,190,941		8,725,841
Total liabilities	10,286,566		9,288,492
Total assets	36,360,549
Equity:
Retained earnings			21,454,504
Non-controlling interests			518,440
Total equity	26,073,983		21,972,944
Current liabilities:
Accounts payable and other liabilities	667,472
Deferred revenues	428,153
Total current liabilities	1,095,625		562,651
Non-current-liabilities:
Deferred income taxes	9,190,941		8,725,841
Total liabilities	10,286,566		9,288,492
Total equity	26,073,983		21,972,944
Total liabilities and equity	36,360,549		$ 31,261,436
IFRS 15 [member]
Current assets:
Cash and cash equivalents and equity investments at fair value	70,675,896
Subscribers, distributors, recoverable taxes, contract assets and other, net	216,226,920
Other current assets, net	62,152,708
Total current assets	349,055,524
Non-current assets:
Property, plant and equipment, net	640,000,720
Intangibles and other assets, net	424,485,276
Subscribers, distributors, recoverable taxes, contract assets and other, net	15,681,872
Liabilities:
Current liabilities	467,090,889
Deferred income taxes	24,573,441
Total liabilities	1,183,350,970
Total assets	1,429,223,392
Equity:
Total equity	245,872,422
Current liabilities:
Short-term debt and current portion of long-term debt	96,230,634
Accounts payable and other liabilities	338,116,412
Deferred revenues	32,743,843
Total current liabilities	467,090,889
Non-current-liabilities:
Long-term debt	542,691,819
Deferred income taxes	24,573,441
Other liabilities	148,994,821
Total liabilities	1,183,350,970
Total equity	245,872,422
Total liabilities and equity	1,429,223,392
Previous IFRS [member]
Current assets:
Cash and cash equivalents and equity investments at fair value	70,675,896
Subscribers, distributors, recoverable taxes, contract assets and other, net	185,303,634
Other current assets, net	62,152,708
Total current assets	318,132,238
Non-current assets:
Property, plant and equipment, net	640,000,720
Intangibles and other assets, net	424,485,276
Subscribers, distributors, recoverable taxes, contract assets and other, net	10,244,609
Liabilities:
Current liabilities	465,995,264
Deferred income taxes	15,382,500
Total liabilities	1,173,064,404
Total assets	1,392,862,843
Equity:
Total equity	219,798,439
Current liabilities:
Short-term debt and current portion of long-term debt	96,230,634
Accounts payable and other liabilities	337,448,940
Deferred revenues	32,315,690
Total current liabilities	465,995,264
Non-current-liabilities:
Long-term debt	542,691,819
Deferred income taxes	15,382,500
Other liabilities	148,994,821
Total liabilities	1,173,064,404
Total equity	219,798,439
Total liabilities and equity	$ 1,392,862,843

XML

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Schedule of Impact of Adoption IFRS 15 on Statements of Comprehensive Income (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)
Operating revenues:
Revenues services	$ 863,647,642	$ 43,878	$ 878,411,323	$ 831,885,365
Operating revenues	1,038,207,681	52,747	1,021,633,535	975,412,488
Operating costs and expenses:
Cost of sales and services	508,822,430	25,851	496,335,746	485,060,579
Depreciation and amortization	155,712,580	7,911	160,174,942	148,525,921
Operating costs and expenses	898,650,510	45,657	921,490,232	865,802,178
Operating income	139,557,171	7,090	100,143,303	109,610,310
Equity interest in net result of associated companies	267		91,385	189,950
Income tax	(46,477,079)	(2,361)	(24,941,511)	(11,398,856)
Non-controlling interests	1,950,626	100	2,829,412	3,429,312
Net profit for the year	54,516,823	$ 2,770	32,155,333	12,078,739
IFRS 15 [member]
Operating revenues:
Revenues services	863,647,642
Sales of equipment	174,560,039
Operating revenues	1,038,207,681
Operating costs and expenses:
Cost of sales and services	508,822,430
Commercial, administrative and general and other expenses	234,115,500
Depreciation and amortization	155,712,580
Operating costs and expenses	898,650,510
Operating income	139,557,171
Financial items, net	38,563,536
Equity interest in net result of associated companies	267
Income tax	46,477,079
Non-controlling interests	(1,950,626)
Net profit for the year	52,566,197
Previous IFRS [member]
Operating revenues:
Revenues services	881,530,167		$ 878,411,323	$ 831,885,365
Sales of equipment	158,721,765
Operating revenues	1,040,251,932
Operating costs and expenses:
Cost of sales and services	509,100,174
Commercial, administrative and general and other expenses	240,010,631
Depreciation and amortization	155,712,580
Operating costs and expenses	904,823,385
Operating income	135,428,547
Financial items, net	38,356,359
Equity interest in net result of associated companies	267
Income tax	45,496,698
Non-controlling interests	(1,950,626)
Net profit for the year	49,625,131
Increase/(decrease) [member]
Operating revenues:
Revenues services	(17,882,525)
Sales of equipment	15,838,274
Operating revenues	(2,044,251)
Operating costs and expenses:
Cost of sales and services	(277,744)
Commercial, administrative and general and other expenses	(5,895,131)
Operating costs and expenses	(6,172,875)
Operating income	4,128,624
Financial items, net	207,177
Income tax	980,381
Net profit for the year	$ 2,941,066

XML

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Additional Information (Detail) $ in Millions		12 Months Ended
	Jan. 01, 2018 MXN ($)	Dec. 31, 2018 MXN ($) Segment	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Apr. 09, 2019	Dec. 31, 2018 USD ($)
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Impairment on trade receivables	$ 2,400,783,000
Impairment losses that impacted the carrying amount of debt instruments at fair value through OCI	$ 0
Cumulative index		184.255
Percentage of annual basis index		48.00%
Closing exchange rate		0.5221				0.5221
Cumulative translation (loss) gain		$ (137,598,218,000)	$ (73,261,794,000)			$ (6,990)
Impairment losses on goodwill		0	0	$ 0
Borrowing costs capitalised		2,020,288,000	2,875,034,000	2,861,307,000
Impairment losses		0	0	0
Impairment losses on intangibles		$ 0	0	0
Description of estimation of impairment cash-generating unit		In the estimation of impairments, the Company uses the strategic plans established for the separate cash-generating units to which the assets are assigned. Such strategic plans generally cover a period from 3 to 5 years. For longer periods, beginning in the fifth year, projections are based on such strategic plans while applying a constant or declining expected perpetual growth rate.
Percentage of sensitivity analysis for increase in capital expenditures		5.00%
Adjustments of sensitivity analysis long-life assets		$ 1,558,823,000
Increase in weighted average cost of capital basis		0.50%
Adjustments for assumption of weighted average cost of capital		$ 1,135,854,000
Monthly contributions to pension fund		17.50%
Percentage of employee profit sharing based on individual company taxable income		10.00%
Advertising expenses		$ 26,255,952,000	28,718,563,000	$ 28,180,538,000
Increase (decrease) in interest expense		$ 638,922,453,000	$ 697,884,899,000
Concentration risk percentage		10.00%				10.00%
Number of segments | Segment		0
Foreign subsidiaries [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Consolidated operating revenues		73.00%	74.00%	72.00%
Percentage of operating revenue as percentage of total assets		80.00%	81.00%
Cost of sales [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Employee benefits expense		$ 47,671,143,000	$ 48,696,331,000	$ 46,759,415,000
Commercial, administrative and general expenses [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Employee benefits expense		$ 67,936,876,000	$ 66,920,537,000	$ 63,691,855,000
Interest rate risk [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Increase in basis points		1.00%
Increase in net interest expense		$ 32,136,984,000
Increase (decrease) in interest expense		$ (31,773,439,000)
Currency risk [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Fluctuation in exchange rates		5.00%				5.00%
Increase (decrease) in interest expense		$ 638,922,453,000
Increase (decrease) through changes in foreign exchange rates, regulatory deferral account credit balances		3,165,958,000
Increase (decrease) through changes in discount rates, regulatory deferral account credit balances		$ (10,940,798,000)
Increase/(decrease) in exchange rates		5.00%
Bottom of range [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Term of selling equipment under financing model		12 months
Top of range [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Term of selling equipment under financing model		36 months
U.S.A. [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Closing exchange rate					18.9701
Argentina [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Closing exchange rate		0.5221	1.0610			0.5221
Argentina [member] | Impact of application of hyperinflation adjustments in 2018 [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Cumulative inflation percentage		100.00%
Cumulative inflation period		3 years
U.S.A. [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Closing exchange rate		19.6829	19.7867			19.6829
Cumulative translation adjustment [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Cumulative translation (loss) gain		$ (53,357,300,000)	$ 7,866,158,000
Licenses and rights of use [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Intangibles useful life		Licenses are amortized when the Company does not have a basis to conclude that they are indefinite lived. Licenses are amortized using the straight-line method over a period ranging from 3 to 30 years, which represents the usage period of the assets.
Licenses and rights of use [member] | Bottom of range [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Estimated useful lives		3 years
Licenses and rights of use [member] | Top of range [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Estimated useful lives		30 years
Trademarks [member] | Bottom of range [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Estimated useful lives		1 year
Trademarks [member] | Top of range [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Estimated useful lives		10 years
Customer relationships [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Intangibles useful life		Amortized on a 5 year period.
Estimated useful lives		5 years

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Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Schedule of Effect of Adoption of IFRS 9 in Retained Earnings and Other Components of Equity (Detail) $ in Thousands, $ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Jan. 01, 2018 MXN ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2015 MXN ($)
Assets
Deferred tax assets	$ 111,186,768	$ 5,649		$ 116,571,349	$ 112,651,699
Total assets	1,429,223,392	72,613		1,486,211,852	1,515,042,274
Equity
Retained earnings	237,255,485	12,053		171,087,598
Total adjustment on equity	$ 245,872,422	$ 12,492		$ 260,633,517	$ 271,023,767	$ 160,854,186
Adjustments [member]
Assets
Trade receivables			$ (2,400,783)
Deferred tax assets			544,628
Total assets			(1,856,155)
Equity
Retained earnings			(1,856,155)
Total adjustment on equity			$ (1,856,155)

XML

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Schedule of Impact in Consolidated Financial Statements upon Application of Hyperinflation (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2015 MXN ($)
Disclosure of corporate information [Line Items]
Operating revenues	$ 1,038,207,681	$ 52,747	$ 1,021,633,535	$ 975,412,488
Gain on net monetary positions	4,429,145	225
Income tax	(46,477,079)	(2,361)	(24,941,511)	(11,398,856)
Operating income	139,557,171	$ 7,090	100,143,303	109,610,310
Current assets	349,055,524		342,235,218		$ 17,734
Total liabilities	1,183,350,970		1,225,578,335	1,244,018,507	60,121
Total equity	245,872,422		$ 260,633,517	$ 271,023,767	$ 12,492	$ 160,854,186
Argentina [member] | Impact of application of hyperinflation adjustments in 2018 [member]
Disclosure of corporate information [Line Items]
Operating revenues	6,286,140
Operating loss	(1,423,252)
Financial loss	(1,289,317)
Gain on net monetary positions	4,429,145
Income tax	(770,928)
Operating income	945,647
Current assets	1,866,674
Non-current assets	19,796,073
Total liabilities	4,890,166
Total equity	$ 16,772,581

XML

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Schedule of Impact in Consolidated Financial Statements upon Application of Hyperinflation (Parenthetical) (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)
Disclosure of corporate information [Line Items]
Hyperinflation adjustment	$ (15,826,934)
Net effect	139,557,171	$ 7,090	$ 100,143,303	$ 109,610,310
Argentina [member] | Impact of application of hyperinflation adjustments in 2018 [member]
Disclosure of corporate information [Line Items]
Hyperinflation adjustment	15,826,934
Net effect	$ 945,647

XML

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Summary of Equity Interest in Most Significant Subsidiaries (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Netherlands [member] | America Movil B. V. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Mexico [member] | Sercotel, S.A. de C.V. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Mexico [member] | Radiomovil Dipsa, S.A. de C.V. and subsidiaries (Telcel) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Mexico [member] | Claro Panama, S.A. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Mexico [member] | Telefonos De Mexico S.A.B. de C.V [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	98.80%	98.80%
Dominican Republic [member] | Compania Dominicana De Telefonos S.A. (Codetel) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Puerto Rico [member] | Puerto Rico Telephone Company Inc [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Honduras [member] | Servicios de Comunicaciones de Honduras, S.A. de C.V.(Sercom Honduras) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
U.S.A. [member] | TracFone Wireless, Inc. (TracFone) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Brazil [member] | Claro S.A. (Claro Brasil) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	98.20%	97.70%
Guatemala [member] | Telecomunicaciones de Guatemala, S.A. (Telgua) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	99.30%	99.30%
Nicaragua [member] | Empresa Nicaraguense de Telecomunicaciones, S.A. (Enitel) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	99.60%	99.60%
El Salvador [member] | Compania de Telecomunicaciones de El Salvador, S.A. de C.V. (CTE) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	95.80%	95.80%
Colombia [member] | Comunicacion Celular S. A. (Comcel) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	99.40%	99.40%
Colombia [member] | Telmex Colombia, S.A. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	99.30%	99.30%
Ecuador [member] | Consorcio Ecuatoriano de Telecomunicaciones, S.A. (Conecel) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Argentina [member] | AMX Argentina, S.A. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Paraguay [member] | AMX Paraguay, S.A. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Uruguay [member] | AM Wireless Uruguay, S.A.[member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Chile [member] | Claro Chile S A [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Peru [member] | America Movil Peru S.A. C. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Austria [member] | Telekom Austria AG [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	51.00%	51.00%

XML

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Summary of Annual Depreciation Rates (Detail)	12 Months Ended
	Dec. 31, 2018
Bottom of range [member] | Network infrastructure [member]
Disclosure of detailed information about property, plant and equipment [line items]
Annual depreciation rates	5.00%
Bottom of range [member] | Buildings and leasehold improvements [member]
Disclosure of detailed information about property, plant and equipment [line items]
Annual depreciation rates	2.00%
Bottom of range [member] | Other assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Annual depreciation rates	10.00%
Top of range [member] | Network infrastructure [member]
Disclosure of detailed information about property, plant and equipment [line items]
Annual depreciation rates	33.00%
Top of range [member] | Buildings and leasehold improvements [member]
Disclosure of detailed information about property, plant and equipment [line items]
Annual depreciation rates	33.00%
Top of range [member] | Other assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Annual depreciation rates	50.00%

XML

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Schedule of Estimate Impairment Evaluations (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Brazil [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	36.43%	35.28%
Average margin on CAPEX	21.88%	22.13%
Average pre-tax discount rate (WACC)	10.38%	11.71%
Puerto Rico [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	23.86%	23.31%
Average margin on CAPEX	9.89%	8.31%
Average pre-tax discount rate (WACC)	4.81%	4.42%
Dominican Republic [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	48.64%	45.79%
Average margin on CAPEX	18.43%	15.55%
Average pre-tax discount rate (WACC)	17.66%	19.23%
Mexico [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	36.33%	35.48%
Average margin on CAPEX	7.93%	8.72%
Average pre-tax discount rate (WACC)	16.30%	16.13%
Ecuador [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	39.83%	37.83%
Average margin on CAPEX	11.26%	10.07%
Average pre-tax discount rate (WACC)	24.45%	23.57%
Peru [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	30.29%	29.64%
Average margin on CAPEX	19.95%	16.75%
Average pre-tax discount rate (WACC)	11.52%	13.61%
El Salvador [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	45.36%	40.36%
Average margin on CAPEX	22.61%	17.99%
Average pre-tax discount rate (WACC)	18.01%	25.14%
Chile [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	25.91%	22.04%
Average margin on CAPEX	14.99%	12.45%
Average pre-tax discount rate (WACC)	6.62%	6.15%
Colombia [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	45.01%	41.93%
Average margin on CAPEX	17.14%	19.88%
Average pre-tax discount rate (WACC)	20.29%	19.06%
Bottom of range [member] | Europe [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	22.13%	25.59%
Average margin on CAPEX	8.13%	7.34%
Average pre-tax discount rate (WACC)	8.36%	9.06%
Bottom of range [member] | Other countries [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	7.90%	9.16%
Average margin on CAPEX	0.61%	0.43%
Average pre-tax discount rate (WACC)	9.97%	7.89%
Top of range [member] | Europe [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	41.51%	52.46%
Average margin on CAPEX	19.40%	14.97%
Average pre-tax discount rate (WACC)	22.08%	19.04%
Top of range [member] | Other countries [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	45.91%	48.18%
Average margin on CAPEX	23.96%	23.43%
Average pre-tax discount rate (WACC)	31.63%	24.28%

XML

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Schedule of Estimate Impairment Evaluations (Parenthetical) (Detail) - Country	Dec. 31, 2018	Dec. 31, 2017
Disclosure of impairment of assets [line items]
Number of countries	25
Europe [member]
Disclosure of impairment of assets [line items]
Number of countries	7	7

XML

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Summary of Exchange Rates Used for Translation of Foreign Currencies (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of transactions in foreign currency [line items]
Closing exchange rate	0.5221
Argentina [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.7311	1.1489	1.2632
Closing exchange rate	0.5221	1.0610
Brazil [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	5.2937	5.9346	5.3868
Closing exchange rate	5.0797	5.9815
Colombia [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.0065	0.0064	0.0061
Closing exchange rate	0.0061	0.0066
Guatemala [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	2.5591	2.5755	2.4548
Closing exchange rate	2.5440	2.6940
U.S.A. [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	19.2397	18.9400	18.6529
Closing exchange rate	19.6829	19.7867
Uruguay [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.6274	0.6606	0.6206
Closing exchange rate	0.6074	0.6869
Nicaragua [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.6097	0.6307	0.6515
Closing exchange rate	0.6088	0.6428
Honduras [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.7994	0.8007	0.8109
Closing exchange rate	0.8031	0.8330
Chile [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.0300	0.0292	0.0276
Closing exchange rate	0.0283	0.0322
Paraguay [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.0034	0.0034	0.0033
Closing exchange rate	0.0033	0.0035
Peru [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	5.8517	5.8054	5.5232
Closing exchange rate	5.8406	6.0976
Dominican Republic [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.3876	0.3983	0.4048
Closing exchange rate	0.3898	0.4095
Costa Rica [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.0332	0.0331	0.0338
Closing exchange rate	0.0322	0.0346
European Union [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	22.7101	21.3649	20.6334
Closing exchange rate	22.5586	23.7539
Bulgaria [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	11.6110	10.9223	10.5483
Closing exchange rate	11.5327	12.1406
Belarus [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	9.4451	9.8087	9.3929
Closing exchange rate	9.1319	9.9882
Croatia [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	3.0613	2.8619	2.7392
Closing exchange rate	3.0435	3.1954
Macedonia [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.3688	0.3471	0.3350
Closing exchange rate	0.3667	0.3861
Serbia [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.1920	0.1762	0.1676
Closing exchange rate	0.1907	0.2009

XML

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Summary of Retrospective Reclassification of Financial Statements (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)
Operating revenues:
Revenues services			$ 878,411,323	$ 831,885,365
Revenue from rendering of service	$ 863,647,642	$ 43,878	878,411,323	831,885,365
Previous IFRS [member]
Operating revenues:
Mobile voice services			221,751,600	242,302,380
Fixed voice services			89,856,743	95,299,154
Mobile data services			308,526,994	256,936,895
Fixed data services			139,277,613	126,278,206
Pay television			86,882,606	78,268,778
Other related services			32,115,767	32,799,952
Revenue from rendering of service	$ 881,530,167		878,411,323	831,885,365
Retrospective reclassification [member]
Operating revenues:
Mobile voice services			(221,751,600)	(242,302,380)
Fixed voice services			(89,856,743)	(95,299,154)
Mobile data services			(308,526,994)	(256,936,895)
Fixed data services			(139,277,613)	(126,278,206)
Pay television			(86,882,606)	(78,268,778)
Other related services			(32,115,767)	(32,799,952)
Revenues services			$ 878,411,323	$ 831,885,365

XML

Equity Investments at Fair Value Through OCI and Other Short-term Investments - Additional Information (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of equity investments at fair value through other comprehensive income and other short-term investments [line items]
Dividends received	$ 2,605,333	$ 2,385,559	$ 5,740,092
Investments accounted for using equity method Koninklijke KPN [member]
Disclosure of equity investments at fair value through other comprehensive income and other short-term investments [line items]
Other short-term investments	9,987,851	12,438,019
Changes in fair value of investment	(3,765,688)	622,424
Dividends received	2,605,333	2,370,559	$ 5,740,092
Equity and other short term investments [member] | Investments accounted for using equity method Koninklijke KPN [member]
Disclosure of equity investments at fair value through other comprehensive income and other short-term investments [line items]
Equity investments at fair value through OCI	39,028,083	46,682,657
Other short-term investments	$ 9,987,851	$ 12,438,019

XML

Accounts Receivable from Subscribers, Distributors, Recoverable Taxes Contractual Assets and Other, Net - Summary of Analysis of Accounts Receivable by Component (Detail) $ in Thousands, $ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)
Disclosure of accounts receivable [line items]
Contractual assets	$ 34,718,749
Impairment of trade receivables	(40,798,025)		$ (39,044,925)
Trade and other receivables	231,908,792		203,562,725
Non-current subscribers, distributors and contractual assets	15,681,872	$ 797	9,786,581
Total current subscribers, distributors and contractual assets	216,226,920	$ 10,986	193,776,144
Cost [member] | Receivable from subscribers and distributors [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	173,053,226		178,722,706
Cost [member] | Telecommunications carriers for network interconnection and other services [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	5,543,263		8,671,416
Cost [member] | Recoverable taxes [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	46,706,298		40,477,188
Cost [member] | Sundry debtors [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	$ 12,685,281		$ 14,736,340

XML

Accounts Receivable from Subscribers, Distributors, Recoverable Taxes Contractual Assets and Other, Net - Summary of Analysis of Accounts Receivable by Component (Parenthetical) (Detail) - PIS and COFINS [member] $ in Thousands	12 Months Ended
	Dec. 31, 2018 MXN ($)
Disclosure of accounts receivable [line items]
Tax on the Circulation of Goods and the Provision	$ 12,295,869
Amount of interest income	$ 6,127,656

XML

Accounts Receivable from Subscribers, Distributors, Recoverable Taxes Contractual Assets and Other, Net - Schedule of Changes in Allowance for Expected Credit Losses (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Subclassifications of assets, liabilities and equities [abstract]
Balance at beginning of year	$ (39,044,925)	$ (37,351,677)	$ (27,495,158)
Increases recorded in expenses	(19,535,707)	(20,766,362)	(16,987,769)
Adjustment on initial application of IFRS 9	(2,400,783)
Write-offs	15,497,254	17,713,992	12,587,567
Translation effect	4,686,136	1,359,122	(5,456,317)
Balance at end of year	$ (40,798,025)	$ (39,044,925)	$ (37,351,677)

XML

Accounts Receivable from Subscribers, Distributors, Recoverable Taxes Contractual Assets and Other, Net - Summary of Aging of Accounts Receivable (Detail) - MXN ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Disclosure of accounts receivable [line items]
Trade and other receivables	$ 231,908,792	$ 203,562,725
Receivable from subscribers and distributors [member] | Cost [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	173,053,226	178,722,706
Receivable from subscribers and distributors [member] | 1 - 30 days [member] | Cost [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	46,816,302	46,758,825
Receivable from subscribers and distributors [member] | 31 - 60 days [member] | Cost [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	6,315,277	6,780,671
Receivable from subscribers and distributors [member] | 61 - 90 days [member] | Cost [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	4,168,952	4,375,188
Receivable from subscribers and distributors [member] | Greater than 90 days [member] | Cost [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	53,129,041	42,423,848
Unbilled services provided [member] | Receivable from subscribers and distributors [member] | Cost [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	$ 62,623,654	$ 78,384,174

XML

Accounts Receivable from Subscribers, Distributors, Recoverable Taxes Contractual Assets and Other, Net - Summary of Accounts Receivable From Subscribers and Distributors Included in Impairments of Trade Receivables (Detail) - Receivable from subscribers and distributors [member] - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of accounts receivable [line items]
Allowance for bad debts	$ 40,798,025	$ 39,044,925
1 - 90 days [member]
Disclosure of accounts receivable [line items]
Allowance for bad debts	4,079,803	3,807,945
Greater than 90 days [member]
Disclosure of accounts receivable [line items]
Allowance for bad debts	$ 36,718,222	$ 35,236,980

XML

Accounts Receivable from Subscribers, Distributors, Recoverable Taxes Contractual Assets and Other, Net - Summary of Analysis of Contract Assets and Liabilities (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018 MXN ($)
Contract Assets:
Beginning balance	$ 29,640,953
Additions	32,029,279
Disposals	(25,243,487)
Translation effect	(1,707,996)
Ending balance	34,718,749
Non-current contract assets	5,437,263
Current portion contracts assets	$ 29,281,486

XML

Related Parties - Summary of Analysis of the Balances with Related Parties (Detail) - MXN ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	$ 1,263,605	$ 868,230
Amounts payable to related party transactions	2,974,213	2,540,412
Sears Roebuck de Mexico, SA de CV [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	264,976	211,491
Sanborns Hermanos, SA [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	312,706	91,233
Grupo Condumex, SA de CV and Subsidiaries [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	35,007	47,269
Amounts payable to related party transactions	784,678	812,427
Carso Infraestructura y Construccion, SA de CV and Subsidiaries [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	179,852	89,585
Amounts payable to related party transactions	1,403,414	947,761
Enesa, SA de CV and Subsidiaries [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts payable to related party transactions	22,630	50,609
Grupo Financiero Inbursa, SAB de CV [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts payable to related party transactions	235,745	38,847
Operadora de Sites Mexicanos, SA de CV [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	16,634	14,252
Patrimonial Inbursa, SA [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	214,180	246,874
Other related parties [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	240,250	167,526
Amounts payable to related party transactions	217,230	277,276
Fianzas Guardiana Inbursa, SA de CV [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts payable to related party transactions	227,014	276,633
PC Industrial, SA de CV and Subsidiaries [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts payable to related party transactions	$ 83,502	$ 136,859

XML

Related Parties - Additional Information (Detail) - MXN ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of transactions between related parties [line items]
Impairment of receivables in connection with amounts owed by related parties	$ 0	$ 0	$ 0
Members of the audit and corporate practices committee [member]
Disclosure of transactions between related parties [line items]
compensation paid	5,300,000
Directors and other key management personnel [member]
Disclosure of transactions between related parties [line items]
compensation paid	$ 70,100,000

XML

Related Parties - Summary of Transactions with Related Parties (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of transactions between related parties [abstract]
Construction services, purchases of materials, inventories and property, plant and equipment	$ 7,211,960	$ 11,030,944	$ 9,917,280
Rent of towers	6,168,592	5,326,366	4,748,503
Insurance premiums, fees paid for administrative and operating services, brokerage services and others	4,134,380	4,135,578	4,118,469
Other services	1,864,017	2,802,667	1,899,818
Investments and expenses	19,378,949	23,295,555	20,684,070
Revenues services	679,220	416,047	411,076
Sales of equipment	1,296,204	2,313,840	2,679,591
Revenues	$ 1,975,424	$ 2,729,887	$ 3,090,667

XML

Related Parties - Summary of Transactions with Related Parties (Parenthetical) (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Grupo Carso, SAB de CV [member]
Disclosure of transactions between related parties [line items]
Materials purchased from subsidiaries	$ 5,622,791	$ 9,829,991	$ 9,547,530
Network maintenance service cost	778,191	789,253	812,247
Associates [member]
Disclosure of transactions between related parties [line items]
Software service expense	13,784	15,695	705,074
Seguros Inbursa SA and Fianzas Guardiana Inbursa, SA [member]
Disclosure of transactions between related parties [line items]
Insurance premium	$ 2,541,703	$ 3,330,038	$ 2,406,058

XML

Derivative Financial Instruments - Additional Information (Details) (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about financial instruments [line items]
changes in fair value of derivative financial instruments gain (loss)	$ (4,686,407)	$ 8,192,567	$ (9,622,233)
Derivatives [member] | Debt securities [member]
Disclosure of detailed information about financial instruments [line items]
weighted-average interest rate	4.10%	4.00%	3.70%

XML

Derivative Financial Instruments - Schedule of Derivative Financial Instruments Contracted (Detail) € in Thousands, $ in Thousands, $ in Thousands, ¥ in Millions, £ in Millions, SFr in Millions, R$ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 BRL (R$)	Dec. 31, 2018 EUR (€)	Dec. 31, 2018 GBP (£)	Dec. 31, 2018 JPY (¥)	Dec. 31, 2017 MXN ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 BRL (R$)	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 CHF (SFr)	Dec. 31, 2017 GBP (£)	Dec. 31, 2017 JPY (¥)
Disclosure of detailed information about financial instruments [line items]
Fair value, Asset	$ 5,287,548	$ 269,000					$ 8,037,384
Fair value, Liabilities	(17,107,579)						(14,359,460)
Non-current liability	(3,567,863)	(181,000)					(3,756,921)
Total current liability	(13,539,716)	(688,000)					(10,602,539)
Swaps US Dollar-Mexican peso [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset		3,490,000						$ 2,800,000
Fair value, Asset	2,058,831						4,766,102
Swaps Yen-US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | ¥						¥ 13,000							¥ 13,000
Fair value, Asset	581,948						521,270
Forwards US Dollar-Mexican peso [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset								1,744,000
Fair value, Asset							1,600,666
Notional amount, Liabilities		977,000
Fair value, Liabilities		(772,704)
Forwards US Dollar - Brazilian real [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset		150,000						100,000
Fair value, Asset	126,287						44,280
Swaps Swiss Franc-US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | SFr											SFr 475
Fair value, Asset							178,710
Swaps Euro-Brazilianreal [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | R$			R$ 300						R$ 450
Fair value, Asset	1,080,552						359,671
Interest rate swaps in Mexican peso [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset							200,000
Fair value, Asset							916
Forwards Brazilian Real - US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | R$			R$ 2,823
Fair value, Asset	1,107,630
Forwards Euro- Brazilian real [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | €				€ 150,000						€ 400,000
Fair value, Asset	123,005									330,427
Forwards US Dollar - Swiss franc [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | SFr											SFr 75
Fair value, Asset							121,981
Forwards Euro-US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | €				710,000						204,000
Fair value, Asset	209,295									113,361
Notional amount, Liabilities | €				950,000
Fair value, Liabilities	(333,586)
Swaps Dollar- Euro [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities		$ 2,025,000						$ 2,092,000
Fair value, Liabilities	(5,114,863)						(8,340,970)
Swaps Pound sterling-Euro [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | £					£ 740							£ 740
Fair value, Liabilities	(4,027,312)						(3,376,091)
Swap Pound sterling-USDollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | £					£ 2,010							£ 2,010
Fair value, Liabilities	(5,836,607)						(1,676,636)
Call spread option [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | €										750,000
Fair value, Liabilities							(48,422)
Put option [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | €				374,000						374,000
Fair value, Liabilities	(988,669)						(482,645)
Call spread option [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | €				€ 3,000,000						€ 3,000,000
Fair value, Liabilities	$ (33,838)						$ (434,696)

XML

Derivative Financial Instruments - Summary of Maturities of Notional Amount of Derivatives (Detail) € in Millions, ¥ in Millions, ¥ in Millions, £ in Millions, R$ in Millions, $ in Millions	Dec. 31, 2018 USD ($)	Dec. 31, 2018 BRL (R$)	Dec. 31, 2018 EUR (€)	Dec. 31, 2018 GBP (£)	Dec. 31, 2018 JPY (¥)	Dec. 31, 2018 CNY (¥)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 BRL (R$)	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 GBP (£)	Dec. 31, 2017 JPY (¥)
Swaps US Dollar-Mexican peso [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | $	$ 3,490						$ 2,800
Swaps Yen-US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | ¥					¥ 13,000						¥ 13,000
Swaps Euro-Brazilianreal [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | R$		R$ 300						R$ 450
Forwards Brazilian Real - US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | R$		2,823
Forwards Euro- Brazilian real [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | €			€ 150						€ 400
Forwards US Dollar - Brazilian real [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | $	150						100
Forwards Euro-US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | €			710						204
Notional amount, Liabilities | €			950
Swaps Dollar- Euro [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | $	2,025						2,092
Swaps Pound sterling-Euro [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | £				£ 740						£ 740
Swap Pound sterling-USDollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | £				2,010						£ 2,010
Forwards US Dollar-Mexican peso [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | $							$ 1,744
Notional amount, Liabilities | $	977
Put option [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | €			374						374
Call spread option [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | €			3,000						€ 3,000
2019 [member] | Swaps Euro-Brazilianreal [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | €			300
2019 [member] | Forwards Brazilian Real - US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | R$		1,680
2019 [member] | Forwards Euro- Brazilian real [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | €			150
2019 [member] | Forwards US Dollar - Brazilian real [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | $	150
2019 [member] | Forwards Euro-US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | €			710
Notional amount, Liabilities | €			950
2019 [member] | Swaps Dollar- Euro [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | $	25
2019 [member] | Forwards US Dollar-Mexican peso [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | $	977
2020 [member] | Swap Pound sterling-USDollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | £				550
2020 [member] | Call spread option [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | €			3,000
2021 [member] | Forwards Brazilian Real - US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | R$		R$ 1,143
2022 [member] | Swaps US Dollar-Mexican peso [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | $	1,600
2023 and Thereafter [member] | Swaps US Dollar-Mexican peso [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | $	1,890
2023 and Thereafter [member] | Swaps Yen-US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | ¥						¥ 13,000
2023 and Thereafter [member] | Swaps Dollar- Euro [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | $	$ 2,000
2023 and Thereafter [member] | Swaps Pound sterling-Euro [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | £				740
2023 and Thereafter [member] | Swap Pound sterling-USDollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | £				£ 1,460
2023 and Thereafter [member] | Put option [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | €			€ 374

XML

Inventories, Net - Summary of Analysis of Inventories (Detail) $ in Thousands, $ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)
Classes of current inventories [abstract]
Mobile phones, accessories, computers, TVs, cards and other materials	$ 43,723,492		$ 42,262,511
Less: Reserve for obsolete and slow-moving inventories	(3,418,130)		(3,452,946)
Total	$ 40,305,362	$ 2,048	$ 38,809,565

XML

Inventories, net - Additional Information (Details) (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of inventories [abstract]
Cost of inventories recognized in cost of sales	$ 180,013,986	$ 170,154,336	$ 172,495,376

XML

Other Assets, Net - Summary of Analysis of Other Assets (Detail) $ in Thousands, $ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)
Current portion:
Advances to suppliers (different from PP&E and inventories)	$ 12,931,247		$ 9,536,654
Prepaid insurance	949,590		683,091
Costs of mobile equipment and computers associated with deferred revenues	599,628		6,182,010
Other	815,728		950,991
Other current assets	15,296,193	$ 777	17,352,746
Non-current portion:
Recoverable taxes	11,514,455		12,249,372
Prepayments for the use of fiber optics	3,985,216		4,361,668
Prepaid expenses and judicial deposits	26,961,930		25,926,436
Total	$ 42,461,601		$ 42,537,476

XML

Other assets, net - Additional Information (Details) (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other assets [member]
Disclosure of other assets [line items]
Amortization expense for other assets	$ 798,243	$ 620,680	$ 1,340,609

XML

Other Assets, Net - Summary of Analysis of Other Assets (Parenthetical) (Detail) - MXN ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Disclosure of other assets [abstract]
Judicial deposits	$ 18,172,342	$ 20,288,382

XML

Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment, Net (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	$ 676,343,198		$ 701,190,066	$ 573,528,878
Additions	240,263,874		193,815,932	233,591,696
Retirements	(106,977,930)		(72,079,914)	(92,981,332)
Business combinations	143,016		746,007	1,963,996
Effect of translation of foreign subsidiaries	(40,655,711)		(12,122,813)	112,749,172
Depreciation of the year	(129,115,727)		(135,206,080)	(127,662,344)
Ending balance	640,000,720	$ 32,516	676,343,198	701,190,066
Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	1,303,278,914		1,256,341,372	861,840,855
Additions	240,263,874		193,815,932	233,591,696
Retirements	(140,581,001)		(99,444,894)	(121,078,982)
Business combinations	143,016		746,007	1,963,996
Effect of translation of foreign subsidiaries	(117,432,346)		(48,179,503)	280,023,807
Ending balance	1,285,672,457		1,303,278,914	1,256,341,372
Cost [member] | Network in operation in operation and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	989,665,946		971,276,013	641,384,702
Additions	68,900,443		78,272,882	101,794,197
Retirements	(1,610,246)		(21,657,715)	(8,963,076)
Business combinations	128,246		599,306	1,873,445
Effect of translation of foreign subsidiaries	(87,888,453)		(38,824,540)	235,186,745
Ending balance	969,195,936		989,665,946	971,276,013
Cost [member] | Land and buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	62,584,189		62,135,411	54,794,386
Additions	4,429,433		2,858,996	2,900,511
Retirements	(3,987,671)		(415,219)	(2,845,298)
Business combinations	8,874		27,686	3,839
Effect of translation of foreign subsidiaries	(5,904,499)		(2,022,685)	7,281,973
Ending balance	57,130,326		62,584,189	62,135,411
Cost [member] | Other assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	150,315,807		144,927,016	106,468,602
Additions	25,268,252		19,287,525	24,368,918
Retirements	(13,377,798)		(8,112,571)	(10,717,096)
Business combinations	2,578		80,734	69,937
Effect of translation of foreign subsidiaries	(12,399,702)		(5,866,897)	24,736,655
Ending balance	149,809,137		150,315,807	144,927,016
Cost [member] | Construction in process and advances plant suppliers [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	74,121,374		49,719,884	38,850,776
Additions	92,285,397		66,383,381	70,517,319
Retirements	(76,978,798)		(41,279,573)	(70,911,593)
Business combinations	1,379		34,705	11,255
Effect of translation of foreign subsidiaries	(8,336,823)		(737,023)	11,252,127
Ending balance	81,092,529		74,121,374	49,719,884
Cost [member] | Spare parts for operation of the network [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	26,591,598		28,283,048	20,342,389
Additions	49,380,349		27,013,148	34,010,751
Retirements	(44,626,488)		(27,979,816)	(27,641,919)
Business combinations	1,939		3,576	5,520
Effect of translation of foreign subsidiaries	(2,902,869)		(728,358)	1,566,307
Ending balance	28,444,529		26,591,598	28,283,048
Accumulated depreciation [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(626,935,716)		(555,151,306)	(288,311,977)
Retirements	33,603,071		27,364,980	28,097,650
Effect of translation of foreign subsidiaries	76,776,635		36,056,690	(167,274,635)
Depreciation of the year	(129,115,727)		(135,206,080)	(127,662,344)
Ending balance	(645,671,737)		(626,935,716)	(555,151,306)
Accumulated depreciation [member] | Network in operation in operation and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(552,345,509)		(495,887,086)	(236,731,728)
Retirements	28,712,096		21,214,724	1,968,376
Effect of translation of foreign subsidiaries	67,907,227		32,860,339	(153,147,349)
Depreciation of the year	(104,279,361)		(110,533,486)	(107,976,385)
Ending balance	(560,005,547)		(552,345,509)	(495,887,086)
Accumulated depreciation [member] | Other assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(63,359,529)		(48,459,697)	(47,057,084)
Retirements	2,418,837		4,572,509	25,099,710
Effect of translation of foreign subsidiaries	6,579,983		2,251,958	(10,396,438)
Depreciation of the year	(22,172,785)		(21,724,299)	(16,105,885)
Ending balance	(76,533,494)		(63,359,529)	(48,459,697)
Accumulated depreciation [member] | Spare parts for operation of the network [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(575,393)		(323,201)	44,423
Retirements	160,696		9,205	54,280
Effect of translation of foreign subsidiaries	131,429		4,339	(20,896)
Depreciation of the year	(38,479)		(265,736)	(401,008)
Ending balance	(321,747)		(575,393)	(323,201)
Accumulated depreciation [member] | Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(10,655,285)		(10,481,322)	(4,567,588)
Retirements	2,311,442		1,568,542	975,284
Effect of translation of foreign subsidiaries	2,157,996		940,054	(3,709,952)
Depreciation of the year	(2,625,102)		(2,682,559)	(3,179,066)
Ending balance	$ (8,810,949)		$ (10,655,285)	$ (10,481,322)

XML

Property, Plant and Equipment, net - Additional Information (Details) (Detail) R$ in Thousands, $ in Thousands, $ in Thousands		12 Months Ended
	Oct. 20, 2017 MXN ($) Transponder	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 BRL (R$)	Dec. 31, 2017 MXN ($)	Dec. 31, 2017 BRL (R$)	Oct. 20, 2017 USD ($)
Disclosure of detailed information about property, plant and equipment [line items]
Methods used to determine stage of completion of construction in progress		The completion period of construction in progress is variable and depends upon the type of plant and equipment under construction.
Estimated useful life of property, plant and equipment decription		Seven years
Estimated useful life of property, plant and equipment		7
Property, plant and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Capitalized interest amortization period		7
Star One D2 satellite [member] | Star one [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, investment capitalized		$ 2,896,399	R$ 551,528	$ 916,240	R$ 153,179
Star One D2 satellite [member] | Star one [member] | Space Systems Loral [member]
Disclosure of detailed information about property, plant and equipment [line items]
Number of transponders | Transponder	52
Network Capacity	20
Estimated cost of project	$ 6,391,104					$ 323,000
Land and buildings and other equipment [member] | Claro Brasil [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, pledged in guarantee of legal proceedings | $		$ 3,166,882		$ 3,521,082

XML

Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment, Net Under Capital Leases (Detail) $ in Thousands, $ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2015 MXN ($)
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	$ 640,000,720	$ 32,516	$ 676,343,198	$ 701,190,066	$ 573,528,878
Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	1,285,672,457		1,303,278,914	1,256,341,372	861,840,855
Accumulated depreciation [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	(645,671,737)		(626,935,716)	$ (555,151,306)	$ (288,311,977)
Property, plant and equipment under capital leases [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	4,240,440		4,641,518
Property, plant and equipment under capital leases [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	7,770,681		8,116,532
Property, plant and equipment under capital leases [member] | Accumulated depreciation [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	$ 3,530,241		$ 3,475,014

XML

Property, Plant and Equipment, Net - Schedule of Relevant Information Related to Computation of Capitalized Borrowing Costs (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about property, plant and equipment [line items]
Capitalized interest	$ 2,020,288	$ 2,875,034	$ 2,861,307
Capitalization rate	4.31%	4.30%
Property, plant and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Amount invested in the acquisition of qualifying assets	$ 45,456,630	$ 49,642,370	52,974,400
Capitalized interest	$ 2,020,288	$ 2,875,034	$ 2,861,307
Capitalization rate	4.40%	5.80%	5.40%

XML

Intangible Assets, Net and Goodwill - Summary of Analysis of Intangible Assets (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Amortization of the year	$ (25,798,610)	$ (24,348,182)	$ (19,522,968)
Licenses and rights of use [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	113,304,386	116,031,264	90,449,251
Acquisitions	4,227,244	12,347,051	9,129,949
Acquisitions in business combinations		53,923	360,144
Disposals and other	502,397	(792,894)	1,269,478
Amortization of the year	(11,347,089)	(11,879,489)	(10,255,271)
Effect of translation of foreign subsidiaries	(3,388,543)	(2,455,469)	25,077,713
Balance at end of year	103,298,395	113,304,386	116,031,264
Licenses and rights of use [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	247,413,824	242,739,362	175,295,775
Acquisitions	4,227,244	12,347,051	9,129,949
Acquisitions in business combinations		53,923	360,144
Disposals and other	1,508,274	(1,037,458)	1,269,478
Effect of translation of foreign subsidiaries	(19,670,368)	(6,689,054)	56,684,016
Balance at end of year	233,478,974	247,413,824	242,739,362
Licenses and rights of use [member] | Accumulated depreciation [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	(134,109,438)	(126,708,098)	(84,846,524)
Disposals and other	(1,005,877)	244,564
Amortization of the year	(11,347,089)	(11,879,489)	(10,255,271)
Effect of translation of foreign subsidiaries	16,281,825	4,233,585	(31,606,303)
Balance at end of year	(130,180,579)	(134,109,438)	(126,708,098)
Trademarks [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	9,937,807	12,566,893	11,300,306
Acquisitions	159,958	127,823
Acquisitions in business combinations	6,631	82,868	101,655
Disposals and other		4,660	(13,820)
Amortization of the year	(4,973,602)	(3,179,461)	(330,576)
Effect of translation of foreign subsidiaries	(463,589)	335,024	1,509,328
Balance at end of year	4,667,205	9,937,807	12,566,893
Trademarks [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	28,779,212	27,789,150	22,824,013
Acquisitions	159,958	127,823
Acquisitions in business combinations	6,631	82,868	101,655
Disposals and other		(29,804)	(13,820)
Effect of translation of foreign subsidiaries	(738,635)	809,175	4,877,302
Balance at end of year	28,207,166	28,779,212	27,789,150
Trademarks [member] | Accumulated depreciation [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	(18,841,405)	(15,222,257)	(11,523,707)
Disposals and other		34,464
Amortization of the year	(4,973,602)	(3,179,461)	(330,576)
Effect of translation of foreign subsidiaries	275,046	(474,151)	(3,367,974)
Balance at end of year	(23,539,961)	(18,841,405)	(15,222,257)
Customer relationships [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	10,856,219	13,810,434	14,431,532
Acquisitions	74,637
Acquisitions in business combinations	15,556	512,667	1,904,503
Amortization of the year	(3,754,312)	(3,769,777)	(3,231,518)
Effect of translation of foreign subsidiaries	(410,569)	302,895	705,917
Balance at end of year	6,781,531	10,856,219	13,810,434
Customer relationships [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	26,985,714	26,245,508	18,394,407
Acquisitions	74,637
Acquisitions in business combinations	15,556	512,667	1,904,503
Disposals and other		(882,338)
Effect of translation of foreign subsidiaries	(1,532,839)	1,109,877	5,946,598
Balance at end of year	25,543,068	26,985,714	26,245,508
Customer relationships [member] | Accumulated depreciation [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	(16,129,495)	(12,435,074)	(3,962,875)
Disposals and other		882,338
Amortization of the year	(3,754,312)	(3,769,777)	(3,231,518)
Effect of translation of foreign subsidiaries	1,122,270	(806,982)	(5,240,681)
Balance at end of year	(18,761,537)	(16,129,495)	(12,435,074)
Software licenses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	7,240,437	7,751,056	6,358,170
Acquisitions	2,004,550	3,351,200	3,812,881
Acquisitions in business combinations	3,006		18,504
Disposals and other	1,772,238	(485,449)
Amortization of the year	(3,491,629)	(3,699,363)	(3,469,461)
Effect of translation of foreign subsidiaries	(924,147)	322,993	1,030,962
Balance at end of year	6,604,455	7,240,437	7,751,056
Software licenses [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	15,055,598	12,874,796	8,782,768
Acquisitions	2,004,550	3,351,200	3,854,066
Acquisitions in business combinations	3,006		26,871
Disposals and other	(905,610)	(1,698,118)	(829,680)
Effect of translation of foreign subsidiaries	(1,848,286)	527,720	1,040,771
Balance at end of year	14,309,258	15,055,598	12,874,796
Software licenses [member] | Accumulated depreciation [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	(7,815,161)	(5,123,740)	(2,424,598)
Acquisitions			(41,185)
Acquisitions in business combinations			(8,367)
Disposals and other	2,677,848	1,212,669	829,680
Amortization of the year	(3,491,629)	(3,699,363)	(3,469,461)
Effect of translation of foreign subsidiaries	924,139	(204,727)	(9,809)
Balance at end of year	(7,704,803)	(7,815,161)	(5,123,740)
Content rights [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	2,200,777	2,209,799	2,205,781
Acquisitions	850,779	2,099,084	2,242,556
Disposals and other		(258,795)	(218,669)
Amortization of the year	(2,231,978)	(1,820,092)	(2,236,141)
Effect of translation of foreign subsidiaries	(33,461)	(29,219)	216,272
Balance at end of year	786,117	2,200,777	2,209,799
Content rights [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	6,717,442	4,876,298	2,634,527
Acquisitions	850,779	2,099,084	2,242,556
Disposals and other		(63,137)	(217,057)
Effect of translation of foreign subsidiaries	(18,512)	(194,803)	216,272
Balance at end of year	7,549,709	6,717,442	4,876,298
Content rights [member] | Accumulated depreciation [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	(4,516,665)	(2,666,499)	(428,746)
Disposals and other		(195,658)	(1,612)
Amortization of the year	(2,231,978)	(1,820,092)	(2,236,141)
Effect of translation of foreign subsidiaries	(14,949)	165,584
Balance at end of year	(6,763,592)	(4,516,665)	(2,666,499)
Intangibles, net [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	143,539,626	152,369,446	124,745,040
Acquisitions	7,317,168	17,925,158	15,185,386
Acquisitions in business combinations	25,193	649,458	2,384,806
Disposals and other	2,274,635	(1,532,478)	1,036,989
Amortization of the year	(25,798,610)	(24,348,182)	(19,522,967)
Effect of translation of foreign subsidiaries	(5,220,309)	(1,523,776)	28,540,192
Balance at end of year	122,137,703	143,539,626	152,369,446
Goodwill [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	151,463,232	152,632,635	137,113,716
Acquisitions	1,455
Acquisitions in business combinations	333,284	951,348	3,953,023
Disposals and other	(1,094,861)	(134,525)	(356,832)
Effect of translation of foreign subsidiaries	(5,136,613)	(1,986,226)	11,922,728
Balance at end of year	$ 145,566,497	$ 151,463,232	$ 152,632,635

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Intangible Assets, Net and Goodwill - Summary of Aggregate Carrying Amount of Goodwill (Detail) $ in Thousands, $ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)
Disclosure of carrying value of goodwill [line items]
Goodwill	$ 145,566,497	$ 7,396	$ 151,463,232	$ 152,632,635
Europe [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	53,066,729		53,143,542
Brazil [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	21,388,124		24,708,740
Puerto Rico [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	17,463,394		17,463,394
Dominican Republic [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	14,186,723		14,186,723
Mexico [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	12,770,381		13,981,033
Ecuador [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	9,856,601		9,852,912
Peru [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	3,086,981		3,958,110
El Salvador [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	2,576,214		2,834,134
Chile [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	2,510,577		2,510,577
Colombia [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	2,155,385		2,155,385
Other countries [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	$ 6,505,388		$ 6,668,682

XML

Intangible Assets, Net and Goodwill - Additional Information (Detail) € in Thousands, S/ in Thousands, R$ in Thousands, $ in Thousands, $ in Thousands, in Thousands					1 Months Ended						12 Months Ended
	Jul. 14, 2017 MXN ($)	Feb. 24, 2017 MXN ($)	May 26, 2016 MXN ($)	May 26, 2016 PEN (S/)	Jan. 31, 2017 MXV ( )	Jul. 31, 2016 MXN ($)	Jul. 31, 2016 USD ($)	May 30, 2016 MXN ($)	May 30, 2016 EUR (€)	Feb. 28, 2016 MXN ($)	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 BRL (R$)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Feb. 28, 2016 USD ($)
Disclosure of intangible assets and goodwill [line items]
Amortization of intangible assets											$ 25,798,610		$ 24,348,182	$ 19,522,968
Telekom Austria [member]
Disclosure of intangible assets and goodwill [line items]
Amount paid for license								$ 410,713	€ 18,837
700 MHz frequency band [member] | Renewal of license [member]
Disclosure of intangible assets and goodwill [line items]
Amount paid for license |					3,592,034
Paraguay subsidiary [member] | 30 Mhz spectrum [member]
Disclosure of intangible assets and goodwill [line items]
Total consideration										$ 830,719					$ 46,000
Radiomovil Dipsa S A de C V (Telcel) [member] | Acquired through auction [member]
Disclosure of intangible assets and goodwill [line items]
Amount paid for license										$ 2,098,060
Mtel Bulgaria [member]
Disclosure of intangible assets and goodwill [line items]
Amount paid for license								$ 135,441	€ 6,212
Radiomovil dipsa [member] | Eight point four Mega Hertz frequency band [member] | Renewal of license [member]
Disclosure of intangible assets and goodwill [line items]
Amount paid for license		$ 917,431
Radiomovil dipsa [member] | Two point five Giga Hertz frequency band [member] | Renewal of license [member]
Disclosure of intangible assets and goodwill [line items]
Amount paid for license	$ 5,305,498
Peru subsidiary [member] | 700 MHz frequency band [member] | Spectrum in public auction [member]
Disclosure of intangible assets and goodwill [line items]
Amount paid for license			$ 5,627,316	S/ 1,002,523
Frequency band expiration year			Dec. 31, 2036	Dec. 31, 2036
Dominican Republic [member]
Disclosure of intangible assets and goodwill [line items]
Amount paid for license											$ 709,829	R$ 1,831,427
Estimated useful life of intangible assets											11 years	11 years
Paraguay Puerto Rico Europe Argentina and other countries [member]
Disclosure of intangible assets and goodwill [line items]
Amount paid for license											$ 3,517,415
Ecuador [member] | Ecuador Telecom, S.A. [member] | License to operate TV [member]
Disclosure of intangible assets and goodwill [line items]
Amount paid for license						$ 27,700	$ 1,500
Chile Europe uruguay and other countries [member] | Other licenses [member]
Disclosure of intangible assets and goodwill [line items]
Amount paid for license													$ 2,532,088

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Business Combinations, Acquisitions, Sale and Non-controlling Interest - Additional Information (Details) (Detail) $ in Thousands	1 Months Ended									12 Months Ended
	Feb. 28, 2017 MXN ($)	Jan. 31, 2017 MXN ($)	Jan. 31, 2017 USD ($)	Nov. 30, 2016 MXN ($)	Aug. 31, 2016	Jul. 31, 2016	May 31, 2016 MXN ($)	May 31, 2016 USD ($)	Jan. 31, 2016 MXN ($)	Dec. 31, 2014 MXN ($)	Dec. 31, 2018 MXN ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Sep. 30, 2016 MXN ($)	May 31, 2016 USD ($)
Disclosure of detailed information about business combination [line items]
Business acquisitions controlling interest									99.99%
Amount paid for business acquisition									$ 1,088,668,000
Goodwill amount recognized									$ 1,046,253,000					$ 1,251,464
Tracfone Wireless Inc [member]
Disclosure of detailed information about business combination [line items]
Additional business acquisition							1.80%								1.80%
Percentage of capital stock							100.00%								100.00%
Amount paid for business acquisition							$ 2,300,553,000								$ 124,673
Gain loss on equity transactions							0
Olo and TVS [member]
Disclosure of detailed information about business combination [line items]
Amount paid for business acquisition							$ 1,854,379,000	$ 102,343
Goodwill amount recognized											$ 329,366,000	$ 188,452,000	$ 1,454,333,000
Percentage of capital stock							100.00%								100.00%
Amount paid from Company		$ 2,079,095,000	$ 94,789				$ 152,214,000	$ 7,554
Other Entities [member]
Disclosure of detailed information about business combination [line items]
Goodwill amount recognized												260,355,000
Net of cash paid												3,249,164,000
Telekom Austria [member]
Disclosure of detailed information about business combination [line items]
Amount paid for business acquisition				$ 582,931,000
Goodwill amount recognized				$ 200,973,000
Percentage of outstanding common stock sold					0.89%	7.80%
Percentage of stake reduced										51.00%
Cash received from sale of outstanding common stock										$ 6,323,336,000
Name of acquiree				Atlant Telecom (Atlant) and its subsidiary TeleSet
Description of acquiree				Leading privately owned fixed-line operators in Belarus offering fixed-line broadband, IPTV and cable TV as well as a video and audio library.
Acquisition of fixed line operator				100.00%
Telekom Austria [member] | Metronet [member]
Disclosure of detailed information about business combination [line items]
Amount paid for business acquisition	$ 1,550,534,000
Goodwill amount recognized	$ 502,574,000
Acquisition of fixed line operator	97.68%
Telekom Austria [member] | Top of range [member]
Disclosure of detailed information about business combination [line items]
Percentage of sale reduced overall shareholding					59.70%
Telekom Austria [member] | Bottom of range [member]
Disclosure of detailed information about business combination [line items]
Percentage of sale reduced overall shareholding					51.89%
Mexican and Brazil subsidiaries [member]
Disclosure of detailed information about business combination [line items]
Additional non-controlling interest acquired												$ 23,881,000

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Business Combinations, Acquisitions, Sale and Non-controlling Interest - Summary of Selected Financial Data From Statements of Financial Position (Detail) $ in Thousands, $ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2015 MXN ($)
Assets:
Current assets	$ 349,055,524	$ 17,734	$ 342,235,218
Total assets	1,429,223,392	72,613	1,486,211,852	$ 1,515,042,274
Liabilities and equity:
Current liabilities	467,090,889	23,731	413,336,497
Non-current liabilities	716,260,081	36,390	812,241,838
Total liabilities	1,183,350,970	60,121	1,225,578,335	1,244,018,507
Equity attributable to equity holders of the parent	195,995,645	9,958	194,164,312
Non-controlling interest	49,876,777	2,534	66,469,205
Total equity	245,872,422	12,492	260,633,517	$ 271,023,767	$ 160,854,186
Total liabilities and equity	1,429,223,392	$ 72,613	1,486,211,852
Subsidiaries with material non-controlling interests [member]
Assets:
Current assets	29,854,542		29,128,486
Non-current assets	131,407,408		150,225,260
Total assets	161,261,950		179,353,746
Liabilities and equity:
Current liabilities	36,822,034		30,192,384
Non-current liabilities	80,023,800		89,048,150
Total liabilities	116,845,834		119,240,534
Equity attributable to equity holders of the parent	22,621,625		25,808,318
Non-controlling interest	21,794,491		34,304,894
Total equity	44,416,116		60,113,212
Total liabilities and equity	$ 161,261,950		$ 179,353,746

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Business Combinations, Acquisitions, Sale and Non-controlling Interest - Summary of Selected Financial Data From Statements of Financial Position (Parenthetical) (Detail) $ in Thousands	Dec. 31, 2017 MXN ($)
Undated Subordinated Fixed Rate Bond [member]
Disclosure of detailed information about business combination [line items]
Undated subordinated fixed rate bond	$ 14,942,886

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Business Combinations, Acquisitions, Sale and Non-controlling Interest - Summary of Statements of Comprehensive Income (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)
Disclosure of detailed information about business combination [line items]
Operating costs and expenses	$ 898,650,510	$ 45,657	$ 921,490,232	$ 865,802,178
Operating income	139,557,171	7,090	100,143,303	109,610,310
Net income	54,516,823	2,770	32,155,333	12,078,739
Total comprehensive income	(12,805,619)	(651)	7,434,083	127,726,244
Distribution of the net profit (loss) to:
Equity holders of the parent	52,566,197	2,670	29,325,921	8,649,427
Non-controllinginterest	1,950,626	100	2,829,412	3,429,312
Net income	54,516,823	2,770	32,155,333	12,078,739
Comprehensive income (loss) for the year attributable to:
Equity holders of the parent	(11,770,227)	(598)	1,201,698	120,974,842
Non-controllinginterest	(1,035,392)	(53)	6,232,385	6,751,402
Total comprehensive income (loss) for the year	(12,805,619)	$ (651)	7,434,083	127,726,244
Subsidiaries with material non-controlling interests [member]
Disclosure of detailed information about business combination [line items]
Operating revenues	100,716,444		93,644,173	85,185,177
Operating costs and expenses	95,984,880		86,920,692	81,590,233
Operating income	4,731,564		6,723,481	3,594,944
Net income	3,809,694		5,656,132	7,065,770
Total comprehensive income	5,047,838		7,737,797	8,450,837
Distribution of the net profit (loss) to:
Equity holders of the parent	1,942,944		2,884,627	3,241,556
Non-controllinginterest	1,866,750		2,771,505	3,824,214
Net income	3,809,694		5,656,132	7,065,770
Comprehensive income (loss) for the year attributable to:
Equity holders of the parent	2,574,397		3,978,263	4,311,801
Non-controllinginterest	2,473,441		3,759,534	4,139,036
Total comprehensive income (loss) for the year	$ 5,047,838		$ 7,737,797	$ 8,450,837

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Income Taxes - Summary of Composition of Income Tax Expense (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Income tax expense	$ 46,477,079	$ 2,361	$ 24,941,511	$ 11,398,856
Mexico [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Current year income tax	28,572,414		16,568,274	14,316,005
Deferred income tax	(2,688,727)		2,582,287	(12,086,232)
Foreign [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Current year income tax	19,898,728		13,524,729	15,367,903
Deferred income tax	$ 694,664		$ (7,733,779)	$ (6,198,820)

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Income Taxes - Summary of Deferred Tax Related to Items Recognized in OCI (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Major components of tax expense (income) [abstract]
Remeasurement of defined benefit plans	$ 408,735	$ 3,032,403	$ (7,734,732)
Effect of financial instruments acquired for hedging purposes		(5,337)	(21,046)
Equity investments at fair value	1,613,667	(266,753)	2,858,452
Other	(8,922)		136,879
Deferred tax benefit (expense) recognized in OCI	$ 2,013,480	$ 2,760,313	$ (4,760,447)

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Income Taxes - Summary of Reconciliation of Statutory Income Tax Rate in Mexico to Consolidated Effective Income Tax Rate Recognized (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Statutory income tax rate in Mexico	30.00%	30.00%	30.00%
Impact of non-deductibleand non-taxable items:
Tax inflation effects	7.30%	17.80%	15.90%
Derivatives	0.40%	1.00%	8.00%
Employee benefits	1.30%	2.20%	4.40%
Other	6.30%	2.60%	9.80%
Equity interest in net loss of associated companies			(0.20%)
Dividends received from associates	(0.80%)	(1.20%)	(7.90%)
Foreign subsidiaries and other non-deductible items, net	1.50%	(8.30%)	(10.80%)
Effective tax rate	46.00%	43.70%	48.60%
Mexico [member]
Impact of non-deductibleand non-taxable items:
Effective tax rate	45.30%	53.60%	68.10%
Brazil [member]
Impact of non-deductibleand non-taxable items:
Use of unrecognized tax credits in Brazil		(0.40%)	(0.60%)

XML

Income Taxes - Summary of Analysis of Temporary Differences Giving Rise to Net Deferred Tax Liability (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	$ 86,613,327	$ 104,573,985	$ 98,589,818	$ 69,817,147
Deferred tax expense in net profit for the year	1,994,063	5,151,492	18,285,052
Provisions [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	20,781,421	26,268,666
Deferred tax expense in net profit for the year	1,841,705	1,579,604	1,622,132
Deferred revenues [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	6,866,120	7,461,802
Deferred tax expense in net profit for the year	3,632,051	(965,010)	(12,128)
Tax losses carry forward [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	27,881,491	38,332,408
Deferred tax expense in net profit for the year	(5,833,660)	(323,506)	12,706,245
Property, plant and equipment [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	(11,756,590)	(9,929,129)
Deferred tax expense in net profit for the year	453,493	1,974,753	2,445,783
Inventories [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	2,106,976	2,003,049
Deferred tax expense in net profit for the year	81,270	519,046	(229,571)
Licenses and rights of use [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	(3,896,788)	(2,455,877)
Deferred tax expense in net profit for the year	961,402	348,201	54,182
Employee benefits [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	33,673,874	33,253,071
Deferred tax expense in net profit for the year	1,128,209	1,225,310	3,616,952
Other [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	10,956,823	9,639,995
Deferred tax expense in net profit for the year	$ (270,407)	$ 793,094	$ (1,918,543)

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Income Taxes - Summary of Reconciliation of Deferred Tax Assets and Liabilities, Net (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)
Reconciliation of changes in deferred tax liability (asset) [abstract]
Deferred Tax (Liability) Asset Beginning Balance	$ 104,573,985	$ 98,589,818	$ 69,817,147
Deferred tax benefit	1,994,063	5,151,492	18,285,052
Translation effect	(8,854,010)	(1,687,276)	15,273,228
Deferred tax benefit (expense) recognized in OCI	2,013,480	2,760,313	(4,760,447)
Deferred taxes acquired in business combinations	(25,827)	(240,362)	(25,162)
Hyperinflationary effect in Argentina	(4,907,151)
Effect of adoption of IFRS 9 (Note 2ai)	544,628
Effect of adoption of IFRS 15 (Note 2ai)	(8,725,841)
Deferred tax (liability) asset ending balance	86,613,327	104,573,985	98,589,818
Presented in the consolidated statements of financial position as follows:
Deferred income tax assets				$ 111,186,768	$ 5,649	$ 116,571,349	$ 112,651,699
Deferred income tax liabilities				(24,573,441)	$ (1,248)	(11,997,364)	(14,061,881)
Deferred tax assets and liabilities, net	$ 104,573,985	$ 98,589,818	$ 69,817,147	$ 86,613,327		$ 104,573,985	$ 98,589,818

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Income Taxes - Additional Information (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Statutory income tax rate in Mexico	30.00%	30.00%	30.00%
Effective income tax rate for foreign jurisdiction	31.00%	15.00%	20.00%
Percentage of share with voting right	80.00%
Brazil [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net operating loss carryforwards	$ 59,695,441
Effective taxable income percentage carryforward	30.00%
Effective taxable income percentage	25.00%
Corporate tax rate	34.00%
Austria [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net operating loss carryforwards	$ 20,128,833
operating loss carryforward effective tax rate annual limit	75.00%
Mexico [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Accumulated tax loss	$ 6,043,603
Bottom of range [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Statutory tax rates	21.00%
Top of range [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Statutory tax rates	40.00%
CUCA [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Contributed capital account	$ 536,278,717	$ 510,832,194
CUFIN [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Contributed capital account	$ 276,185,284	$ 225,105,342

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Income Taxes - Combined Income Before Taxes and Combined Provision for Taxes (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Major components of tax expense (income) [abstract]
Combined income before taxes	$ 66,314,883	$ 38,286,046	$ 45,697,258
Combined tax provision differences not deducible-not cumulative in the foreign subsidiaries	$ 20,593,392	$ 5,790,950	$ 9,169,083

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Income Taxes - Available Tax Loss Carryforwards Recorded in Deferred Tax Assets (Detail) $ in Thousands	Dec. 31, 2018 MXN ($)
Disclosure of tax losses available for carryforward [line items]
Balance of available tax loss carryforwards at December 31, 2018	$ 88,109,766
Tax loss carryforward benefit	27,881,491
Brazil [member]
Disclosure of tax losses available for carryforward [line items]
Balance of available tax loss carryforwards at December 31, 2018	59,695,441
Tax loss carryforward benefit	20,296,450
Austria [member]
Disclosure of tax losses available for carryforward [line items]
Balance of available tax loss carryforwards at December 31, 2018	20,128,833
Tax loss carryforward benefit	5,032,208
Mexico [member]
Disclosure of tax losses available for carryforward [line items]
Balance of available tax loss carryforwards at December 31, 2018	6,043,603
Tax loss carryforward benefit	1,813,081
Colombia [member]
Disclosure of tax losses available for carryforward [line items]
Balance of available tax loss carryforwards at December 31, 2018	2,239,486
Tax loss carryforward benefit	739,030
Nicaragua [member]
Disclosure of tax losses available for carryforward [line items]
Balance of available tax loss carryforwards at December 31, 2018	2,403
Tax loss carryforward benefit	$ 722

XML

Debt - Summary of Short- and Long-Term Debt (Detail) $ in Thousands, $ in Millions	1 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2018 MXN ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2018 USD ($)
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 638,922,453	$ 697,884,899
Less: Short-term debt and current portion of long-term debt		96,230,634	51,745,841	$ 4,889
Long-term debt		$ 542,691,819	$ 646,139,058	$ 27,572
Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity	2073	2073	2073
Borrowings		$ 26,213,095	$ 49,148,975
Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		29,651,000	31,364,000
Less: Short-term debt and current portion of long-term debt		28,852,364	22,714,383
Finance Lease [member]
Disclosure of detailed information about borrowings [line items]
Less: Short-term debt and current portion of long-term debt		12,460	36,962
Line of credit and others [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		29,715,776	31,463,056
U.S. dollars [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 184,089,282	$ 185,060,098
U.S. dollars [member] | Fixed-rate Senior notes interest rate 5.000% maturing 2019 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		5.00%	5.00%	5.00%
Borrowings maturity		2019	2019
Borrowings		$ 14,762,175	$ 14,840,025
U.S. dollars [member] | Fixed-rate Senior notes interest rate 5.500% maturing 2019 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		5.50%	5.50%	5.50%
Borrowings maturity		2019	2019
Borrowings		$ 7,427,972	$ 7,467,145
U.S. dollars [member] | Fixed-rate Senior notes interest rate 5.000% maturing 2020 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		5.00%	5.00%	5.00%
Borrowings maturity		2020	2020
Borrowings		$ 41,822,521	$ 42,043,077
U.S. dollars [member] | Fixed-rate Senior notes interest rate 3.125% maturing 2022 [Member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		3.125%	3.125%	3.125%
Borrowings maturity		2022	2022
Borrowings		$ 31,492,640	$ 31,658,720
U.S. dollars [member] | Fixed-rate Senior notes interest rate 6.375% maturing 2035 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		6.375%	6.375%	6.375%
Borrowings maturity		2035	2035
Borrowings		$ 19,315,420	$ 19,417,282
U.S. dollars [member] | Fixed-rate Senior notes interest rate 6.125% maturing 2037 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		6.125%	6.125%	6.125%
Borrowings maturity		2037	2037
Borrowings		$ 7,267,419	$ 7,305,744
U.S. dollars [member] | Fixed-rate Senior notes interest rate 6.125% maturing 2040 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		6.125%	6.125%	6.125%
Borrowings maturity		2040	2040
Borrowings		$ 39,365,800	$ 39,573,400
U.S. dollars [member] | Fixed Rate Senior Notes Interest Rate 4.375% Maturing 2042 [Member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		4.375%	4.375%	4.375%
Borrowings maturity		2042	2042
Borrowings		$ 22,635,335	$ 22,754,705
U.S. dollars [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 11,698,885	$ 14,474,350
U.S. dollars [member] | Lines of credit [member] | LIBOR [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest basis		L + 0.200% and 1.500% - 8.950%	L + 0.200% and 1.500% - 7.250%
Borrowings interest rate adjustment		0.20%	0.20%	0.20%
U.S. dollars [member] | Bottom of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		1.50%	1.50%	1.50%
Borrowings maturity		2019	2018
U.S. dollars [member] | Top of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		8.95%	7.25%	8.95%
Borrowings maturity		2021	2019
Mexican pesos [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 68,001,125	$ 70,691,683
Mexican pesos [member] | Domestic Senior Notes Interest Rate 8.110% Maturing 2018 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate			8.11%
Borrowings maturity			2018
Borrowings			$ 1,750,000
Mexican pesos [member] | Domestic Senior Notes Interest Rate 8.270% Maturing 2018 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate			8.27%
Borrowings maturity			2018
Borrowings			$ 1,160,110
Mexican pesos [member] | Domestic Senior Notes Interest Rate 8.600% Maturing 2020 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		8.60%	8.60%	8.60%
Borrowings maturity		2020	2020
Borrowings		$ 7,000,000	$ 7,000,000
Mexican pesos [member] | Domestic Senior Notes Interest Rate 0.000% Maturing 2025 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		0.00%	0.00%	0.00%
Borrowings maturity		2025	2025
Borrowings		$ 4,629,425	$ 4,409,873
Mexican pesos [member] | Domestic Senior Notes Interest Rate 8.360% Maturing 2037 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		8.36%	8.36%	8.36%
Borrowings maturity		2037	2037
Borrowings		$ 5,000,000	$ 5,000,000
Mexican pesos [member] | Fixed Rate Senior Notes Interest Rate 6.000% Maturing 2019 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		6.00%	6.00%	6.00%
Borrowings maturity		2019	2019
Borrowings		$ 10,000,000	$ 10,000,000
Mexican pesos [member] | Fixed Rate Senior Notes Interest Rate 6.450% Maturing 2022 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		6.45%	6.45%	6.45%
Borrowings maturity		2022	2022
Borrowings		$ 22,500,000	$ 22,500,000
Mexican pesos [member] | Fixed Rate Senior Notes Interest Rate 7.125% Maturing 2024 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		7.125%	7.125%	7.125%
Borrowings maturity		2024	2024
Borrowings		$ 11,000,000	$ 11,000,000
Mexican pesos [member] | Fixed Rate Senior Notes Interest Rate 8.460% Maturing 2036 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		8.46%	8.46%	8.46%
Borrowings maturity		2036	2036
Borrowings		$ 7,871,700	$ 7,871,700
Mexican pesos [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity		2019
Borrowings		$ 4,500,000	$ 12,500,000
Mexican pesos [member] | Lines of credit [member] | Mexican Interbank Rate [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest basis		TIIE + 0.175%	TIIE + 0.040% - TIIE + 0.175%
Mexican pesos [member] | Bottom of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity			2018
Mexican pesos [member] | Bottom of range [member] | Lines of credit [member] | Mexican Interbank Rate [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate adjustment		0.175%	0.04%	0.175%
Mexican pesos [member] | Top of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity			2019
Mexican pesos [member] | Top of range [member] | Lines of credit [member] | Mexican Interbank Rate [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate adjustment		0.175%	0.175%	0.175%
Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 236,548,891	$ 263,998,076
Euros [member] | Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 12,407,214	$ 34,443,203
Euros [member] | Fixed rate senior notes interest rate 1.000% maturing 2018 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate			1.00%
Borrowings maturity			2018
Borrowings			$ 14,252,360
Euros [member] | Fixed rate senior notes interest rate 4.125% maturing 2019 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		4.125%	4.125%	4.125%
Borrowings maturity		2019	2019
Borrowings		$ 22,558,572	$ 23,753,933
Euros [member] | Exchangable bonds interest rate 0.000% maturing 2020 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		0.00%	0.00%	0.00%
Borrowings maturity		2020	2020
Borrowings		$ 64,107,851	$ 67,504,878
Euros [member] | Fixed rate senior notes interest rate 3.000% maturing 2021 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		3.00%	3.00%	3.00%
Borrowings maturity		2021	2021
Borrowings		$ 22,558,572	$ 23,753,933
Euros [member] | Fixed rate senior notes interest rate 3.125% maturing 2021 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		3.125%	3.125%	3.125%
Borrowings maturity		2021	2021
Borrowings		$ 17,568,739	$ 18,727,775
Euros [member] | Fixed rate senior notes interest rate 4.000% maturing 2022 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		4.00%	4.00%	4.00%
Borrowings maturity		2022	2022
Borrowings		$ 18,028,031	$ 19,333,685
Euros [member] | Fixed rate senior notes interest rate 4.750% maturing 2022 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		4.75%	4.75%	4.75%
Borrowings maturity		2022	2022
Borrowings		$ 16,918,929	$ 17,815,450
Euros [member] | Fixed rate senior notes interest rate 3.500% maturing 2023 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		3.50%	3.50%	3.50%
Borrowings maturity		2023	2023
Borrowings		$ 7,132,481	$ 7,594,262
Euros [member] | Fixed rate senior notes interest rate 3.259% maturing 2023 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		3.259%	3.259%	3.259%
Borrowings maturity		2023	2023
Borrowings		$ 16,918,929	$ 17,815,450
Euros [member] | Fixed rate senior notes interest rate 1.500% maturing 2024 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		1.50%	1.50%	1.50%
Borrowings maturity		2024	2024
Borrowings		$ 19,174,786	$ 20,190,843
Euros [member] | Fixed rate senior notes interest rate 1.500% maturing 2026 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		1.50%	1.50%	1.50%
Borrowings maturity		2026	2026
Borrowings		$ 16,918,929	$ 17,815,450
Euros [member] | Fixed rate senior notes interest rate 2.125% maturing 2028 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		2.125%	2.125%	2.125%
Borrowings maturity		2028	2028
Borrowings		$ 14,663,072	$ 15,440,057
Euros [member] | Euro Nc5 series A capital securities interest rate 5.125% maturing 2073 [member] | Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate			5.125%
Borrowings maturity			2073
Borrowings			$ 21,378,540
Euros [member] | Euro Nc10 series B capital securities interest rate 6.375% maturing 2073 [member] | Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		6.375%	6.375%	6.375%
Borrowings maturity		2073	2073
Borrowings		$ 12,407,214	$ 13,064,663
Euros [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity		2019
Borrowings		$ 5,526,850
Euros [member] | Bottom of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		(0.10%)		(0.10%)
Euros [member] | Top of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		0.00%		0.00%
Pound sterling [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 55,223,526	58,823,089
Pound sterling [member] | Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 13,805,881	$ 14,705,772
Pound sterling [member] | Fixed rate senior notes interest rate 5.000% maturing 2026 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		5.00%	5.00%	5.00%
Borrowings maturity		2026	2026
Borrowings		$ 12,550,801	$ 13,368,884
Pound sterling [member] | Fixed rate senior notes interest rate 5.750% maturing 2030 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		5.75%	5.75%	5.75%
Borrowings maturity		2030	2030
Borrowings		$ 16,316,042	$ 17,379,549
Pound sterling [member] | Fixed rate senior notes interest rate 4.948% maturing 2033 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		4.948%	4.948%	4.948%
Borrowings maturity		2033	2033
Borrowings		$ 7,530,481	$ 8,021,330
Pound sterling [member] | Fixed rate senior notes interest rate 4.375% maturing 2041 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		4.375%	4.375%	4.375%
Borrowings maturity		2041	2041
Borrowings		$ 18,826,202	$ 20,053,326
Pound sterling [member] | GBP NC7 capital securities interest rate 6.375% maturing 2073 [member] | Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		6.375%	6.375%	6.375%
Borrowings maturity		2073	2073
Borrowings		$ 13,805,881	$ 14,705,772
Swiss francs [,ember]
Disclosure of detailed information about borrowings [line items]
Borrowings			$ 11,169,748
Swiss francs [,ember] | Fixed rate senior notes interest rate 1.125% maturing 2018 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate			1.125%
Borrowings maturity			2018
Borrowings			$ 11,169,748
Brazilian reals [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 32,891,187	$ 20,935,142
Brazilian reals [member] | Debenture 102.900% of CDI maturing 2020 [member]
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis		102.900% of CDI	102.900% of CDI
Borrowings maturity		2020	2020
Adjustment of interbank certificate of deposit		102.90%	102.90%
Borrowings		$ 7,619,580	$ 8,972,204
Brazilian reals [member] | Promissory Note 102.400% of CDI maturing 2019 [member]
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis		102.400% of CDI	102.400% of CDI
Borrowings maturity		2019	2019
Adjustment of interbank certificate of deposit		102.40%	102.40%
Borrowings		$ 5,079,720	$ 5,981,469
Brazilian reals [member] | Debenture 103.900% of CDI maturing 2019 [member]
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis		103.900% of CDI	103.900% of CDI
Borrowings maturity		2019	2019
Adjustment of interbank certificate of deposit		103.90%	103.90%
Borrowings		$ 5,079,720	$ 5,981,469
Brazilian reals [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest basis			107% of CDI - TJLP + 3.500% & 3.000% - 9.500%
Borrowings		$ 27,009	$ 4,389,260
Brazilian reals [member] | Lines of credit [member] | Brazil Interbank Deposit Rate [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate adjustment			107.00%
Brazilian reals [member] | Lines of credit [member] | Brazil Long Term Interest Rate [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate adjustment			3.50%
Brazilian reals [member] | Promissory notes 103.205% of CDI maturing 2019 [member]
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis		103.205% of CDI
Borrowings maturity		2019
Adjustment of interbank certificate of deposit		103.205%
Borrowings		$ 1,828,699
Brazilian reals [member] | Debenture 104.000% of CDI maturing 2021 [member]
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis		104.000% of CDI
Borrowings maturity		2021
Adjustment of interbank certificate of deposit		104.00%
Borrowings		$ 5,587,692
Brazilian reals [member] | Debenture 104.250% of CDI maturing 2021 [member]
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis		104.250% of CDI
Borrowings maturity		2021
Adjustment of interbank certificate of deposit		104.25%
Borrowings		$ 7,695,776
Brazilian reals [member] | Bottom of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		5.00%	3.00%	5.00%
Borrowings maturity		2019	2018
Brazilian reals [member] | Top of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		6.00%	9.50%	6.00%
Borrowings maturity		2027	2027
Japanese yens [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 2,334,864	$ 2,282,608
Japanese yens [member] | Fixed rate senior notes interest rate 2.950% maturing 2039 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		2.95%	2.95%	2.95%
Borrowings maturity		2039	2039
Borrowings		$ 2,334,864	$ 2,282,608
Chilean pesos [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 3,904,707	$ 4,312,424
Chilean pesos [member] | Fixed rate senior notes interest rate 3.961% maturing 2035 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		3.961%	3.961%	3.961%
Borrowings maturity		2035	2035
Borrowings		$ 3,904,707	$ 4,312,424
Chilean pesos [member] | Finance Lease [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 64,437	$ 99,446
Chilean pesos [member] | Bottom of range [member] | Finance Lease [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		8.70%	8.70%	8.70%
Borrowings maturity		2019	2018
Chilean pesos [member] | Top of range [member] | Finance Lease [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		8.97%	8.97%	8.97%
Borrowings maturity		2027	2027
Other currencies [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 6,239,571	$ 6,595,032
Peru, Nuevos Soles | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity		2019
Borrowings		$ 7,898,595
Peru, Nuevos Soles | Bottom of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		4.70%		4.70%
Peru, Nuevos Soles | Top of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		12.10%		12.10%

XML

Debt - Additional Information (Detail) € / shares in Units, $ in Thousands, € in Millions, $ in Millions	1 Months Ended	12 Months Ended
	Sep. 30, 2018 MXN ($) shares	Dec. 31, 2018 MXN ($) CreditFacility € / shares shares	Dec. 31, 2017 MXN ($)	Dec. 31, 2018 USD ($) shares	Dec. 31, 2018 EUR (€) shares	Sep. 30, 2018 EUR (€) shares
Disclosure of detailed information about borrowings [line items]
Weighted average cost of borrowed funds		4.31%	4.30%
Borrowings		$ 638,922,453	$ 697,884,899
Number of revolving syndicated credit facilities | CreditFacility		2
Number of shares delivered | shares		71,063,212,170		71,063,212,170	71,063,212,170
Investments accounted for using equity method Koninklijke KPN [member]
Disclosure of detailed information about borrowings [line items]
Number of shares delivered | shares	224,695,844					224,695,844
Percentage of shares outstanding	5.00%
Nominal outstanding amount of bond | €						€ 750
Sale of share price per share | € / shares		$ 3.3374
Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 236,548,891	263,998,076
Top of range [member]
Disclosure of detailed information about borrowings [line items]
Consolidated ratio of debt to EBITDA		400.00%
Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Consolidated ratio of EBITDA to interest paid		250.00%
Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 26,213,095	$ 49,148,975
Loan amount	$ 900,000
Borrowings, maturity	2073	2073	2073
Hybrid Notes [member] | Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 12,407,214	$ 34,443,203
Revolving Syndicated Credit Facility One [member]
Disclosure of detailed information about borrowings [line items]
Loan amount				$ 2,000
Borrowings, maturity		2021
Revolving Syndicated Credit Facility Two [member]
Disclosure of detailed information about borrowings [line items]
Loan amount				2,500
Borrowings, maturity		2019
Syndicated revolving credit facilities [member] | Telekom Austria [member] | Euros [member]
Disclosure of detailed information about borrowings [line items]
Loan amount				$ 1,000
Series One Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Loan amount | €					€ 1,450
Borrowings interest rate		6.375%		6.375%	6.375%
Capital securities beginning redemption period		2018
Borrowings, original currency		Euros
Series Two Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Loan amount | €					€ 1,450
Borrowings interest rate		6.375%		6.375%	6.375%
Capital securities beginning redemption period		2023
Borrowings, original currency		Euros
Series Three Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Loan amount				$ 550
Borrowings interest rate		6.375%		6.375%	6.375%
Capital securities beginning redemption period		2020
Borrowings, original currency		Sterling pounds
Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Percentage of leverage for equity credit		50.00%	50.00%
Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 29,651,000	$ 31,364,000
Lines of credit [member] | Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 5,526,850
Borrowings, maturity		2019
Lines of credit [member] | Top of range [member] | Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		0.00%		0.00%	0.00%
Lines of credit [member] | Bottom of range [member] | Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		(0.10%)		(0.10%)	(0.10%)
Mexico [member]
Disclosure of detailed information about borrowings [line items]
Commissions or the reimbursements for Mexican tax withholdings		4.90%	4.90%

XML

Debt - Summary of Short Term Debt Maturities (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2018 USD ($)
Disclosure of detailed information about borrowings [line items]
Short-term debt	$ 96,230,634	$ 51,745,841	$ 4,889
Weighted average interest rate	5.20%	4.00%
Senior Notes 1 [member] | Obligations and senior notes [member]
Disclosure of detailed information about borrowings [line items]
Short-term debt	$ 67,365,810	$ 28,994,496
Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Short-term debt	28,852,364	22,714,383
Finance Lease [member]
Disclosure of detailed information about borrowings [line items]
Short-term debt	$ 12,460	$ 36,962

XML

Debt - Summary of Long Term Debt Maturities (Detail) $ in Thousands, $ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)
Disclosure of detailed information about borrowings [line items]
Long-term debt	$ 542,691,819	$ 27,572	$ 646,139,058
2020 [member]
Disclosure of detailed information about borrowings [line items]
Long-term debt	121,184,630
2021 [member]
Disclosure of detailed information about borrowings [line items]
Long-term debt	54,189,122
2022 [member]
Disclosure of detailed information about borrowings [line items]
Long-term debt	88,027,828
2023 and Thereafter [member]
Disclosure of detailed information about borrowings [line items]
Long-term debt	$ 279,290,239

XML

Debt - Summary of Senior Notes Outstanding (Detail) - MXN ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	$ 638,922,453	$ 697,884,899
U.S. dollars [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	184,089,282	185,060,098
Mexican pesos [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	68,001,125	70,691,683
Euros [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	236,548,891	263,998,076
Pound sterling [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	55,223,526	58,823,089
Swiss francs [,ember]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings		11,169,748
Japanese yens [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	2,334,864	2,282,608
Brazilian reals [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	32,891,187	20,935,142
Chilean pesos [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	3,904,707	4,312,424
Senior Notes 1 [member] | U.S. dollars [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	184,089,282	185,060,098
Senior Notes 1 [member] | Mexican pesos [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	68,001,125	70,691,683
Senior Notes 1 [member] | Euros [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	236,548,891	263,998,076
Senior Notes 1 [member] | Pound sterling [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	55,223,526	58,823,089
Senior Notes 1 [member] | Swiss francs [,ember]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings		11,169,748
Senior Notes 1 [member] | Japanese yens [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	2,334,864	2,282,608
Senior Notes 1 [member] | Brazilian reals [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	32,891,187	20,935,142
Senior Notes 1 [member] | Chilean pesos [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	$ 3,904,707	$ 4,312,424

XML

Accounts Payable, Accrued Liabilities and Asset Retirement Obligations - Components Accounts Payable and Accrued Liabilities (Detail) $ in Thousands, $ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)
Accounts payable and accrued liabilities [abstract]
Suppliers	$ 118,406,380		$ 106,483,848
Sundry creditors	91,087,197		91,842,929
Interest payable	8,535,519		8,930,561
Guarantee deposits from customers	1,421,336		1,460,286
Dividends payable	2,506,835		3,955,783
Total	$ 221,957,267	$ 11,277	$ 212,673,407

XML

Accounts Payable, Accrued Liabilities and Asset Retirement Obligations - Summary of Balance of Accrued Liabilities (Detail) $ in Thousands, $ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)
Current liabilities
Direct employee benefits payable	$ 16,152,118		$ 16,673,627
Contingencies	40,281,573		51,079,131
Total	$ 56,433,691	$ 2,867	$ 67,752,758

XML

Accounts Payable, Accrued Liabilities and Asset Retirement Obligations - Summary of Movements in Contingent Liabilities (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of contingent liabilities [abstract]
Beginning balance	$ 51,079,131	$ 50,766,070
Business combination	7,812	115,971
Effect of translation	(5,729,826)	(648,685)
Increase of the year	15,683,252	10,510,473
Applications payments	(6,203,329)	(7,618,520)
Applications reversals	(14,555,467)	(2,046,178)
Ending balance	$ 40,281,573	$ 51,079,131

XML

Accounts Payable, Accrued Liabilities and Asset Retirement Obligations - Summary of Movements in Asset Retirement Obligations (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of asset retirement obligations [abstract]
Beginning balance	$ 18,245,129	$ 16,288,631
Effect of translation	(2,020,853)	(119,928)
Increase of the year	1,062,745	3,160,320
Applications payments	(151,364)	(126,088)
Applications reversals	(1,164,056)	(957,806)
Ending balance	$ 15,971,601	$ 18,245,129

XML

Commitments and Contingencies - Schedule of Non-Cancelable Commitments under Finance Leases (Detail) $ in Thousands	Dec. 31, 2018 MXN ($)
Disclosure of finance lease and operating lease by lessee [line items]
Minimum lease payments	$ 102,514
Less: amounts representing finance charges	23,837
Present value of net minimum lease payments	78,677
Less current portion	14,240
Long-term obligations	64,437
Present value of net minimum lease payments	78,677
2019 [member]
Disclosure of finance lease and operating lease by lessee [line items]
Minimum lease payments	22,920
2020 [member]
Disclosure of finance lease and operating lease by lessee [line items]
Minimum lease payments	13,365
2021 [member]
Disclosure of finance lease and operating lease by lessee [line items]
Minimum lease payments	12,068
2022 [member]
Disclosure of finance lease and operating lease by lessee [line items]
Minimum lease payments	10,751
2023 [member]
Disclosure of finance lease and operating lease by lessee [line items]
Minimum lease payments	9,399
2024 and thereafter [member]
Disclosure of finance lease and operating lease by lessee [line items]
Minimum lease payments	$ 34,011

XML

Commitments and Contingencies - Schedule of Non-Cancelable Commitments under Operating Leases (Detail) $ in Thousands	Dec. 31, 2018 MXN ($)
Disclosure of finance lease and operating lease by lessee [line items]
Operating lease minimum payments	$ 137,949,821
2019 [member]
Disclosure of finance lease and operating lease by lessee [line items]
Operating lease minimum payments	24,034,366
2020 [member]
Disclosure of finance lease and operating lease by lessee [line items]
Operating lease minimum payments	22,104,366
2021 [member]
Disclosure of finance lease and operating lease by lessee [line items]
Operating lease minimum payments	15,522,020
2022 [member]
Disclosure of finance lease and operating lease by lessee [line items]
Operating lease minimum payments	14,250,332
2023 [member]
Disclosure of finance lease and operating lease by lessee [line items]
Operating lease minimum payments	12,046,800
2024 and thereafter [member]
Disclosure of finance lease and operating lease by lessee [line items]
Operating lease minimum payments	$ 49,991,937

XML

Commitments and Contingencies - Additional Information (Detail) R$ in Thousands, $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 BRL (R$)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2015 MXN ($)	Dec. 31, 2014 MXN ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2018 BRL (R$)	Sep. 30, 2018 MXN ($)	Sep. 30, 2018 BRL (R$)	Dec. 31, 2017 BRL (R$)	Dec. 31, 2012 MXN ($)	Dec. 31, 2008
Disclosure of commitments and contingencies [line items]
Rent expense	$ 34,421,817		$ 35,571,283	$ 32,300,963
Fine imposed on sanction procedure initiated by triggered breach	2,543,937
Revert of provision									$ 13,034,562	R$ 2,566,000
Monetary correction in a total amount of regulatory matters	19,302,937	R$ 3,800,000
Provision for taxes other than income tax [member]
Disclosure of commitments and contingencies [line items]
Provision	$ 1,117,538							R$ 220,000,000
Telmex [member]
Disclosure of commitments and contingencies [line items]
Percentage of capital stock													51.00%
Fine imposed on alleged merger					$ 14,414
Agencia Nacional de telecomunicacoes [member]
Disclosure of commitments and contingencies [line items]
Inflation-related adjustments applicable to percentage of concessions price	60.00%	60.00%
ICMS related matters [member] | Provision for taxes other than income tax [member]
Disclosure of commitments and contingencies [line items]
Provision	$ 3,362,775,000							662,000,000
CSLL and IRPJ [member] | Provision for taxes other than income tax [member]
Disclosure of commitments and contingencies [line items]
Provision	4,835,894							952,000,000
Claro Brasil [member]
Disclosure of commitments and contingencies [line items]
Tax assessment amount related to undue amortization of goodwill	10,906,159							2,147,000,000
Claro Brasil [member] | Provision for taxes other than income tax [member]
Disclosure of commitments and contingencies [line items]
Provision	558,769							110,000,000
PIS and COFINS [member]
Disclosure of commitments and contingencies [line items]
Tax amount in dispute	5,221,952							1,028,000,000
Tax assessments related to offset in non-cumulative method	8,183,429							1,611,000,000
PIS and COFINS [member] | Provision for taxes other than income tax [member]
Disclosure of commitments and contingencies [line items]
Provision	5,861,997							1,154,000,000
FUST/FUNTTEL [member] | Legal proceedings provision [member]
Disclosure of commitments and contingencies [line items]
Provision	1,706,786							336,000,000
Brazilian ministry of communications [member] | Legal proceedings provision [member]
Disclosure of commitments and contingencies [line items]
Provision			5,080								R$ 1,000
ISS [member] | Legal proceedings provision [member]
Disclosure of commitments and contingencies [line items]
Provision	25,399							5,000
Tax contingent liability [member] | ICMS related matters [member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	55,455,306,000							10,917,000,000
Tax contingent liability [member] | ICMS related matters [member] | Provision for taxes other than income tax [member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	21,167,194							4,167,000,000
Tax contingent liability [member] | Claro Brasil and Americe [member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	5,861,997							1,154,000,000
Tax contingent liability [member] | Primesys [member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	3,916,464							771,000,000
Tax contingent liability [member] | CSLL and IRPJ [member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	17,779,021							3,500,000,000
Tax contingent liability [member] | PIS and COFINS [member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	16,488,772							3,246,000,000
Tax contingent liability [member] | FUST/FUNTTEL [member]
Disclosure of commitments and contingencies [line items]
Provision	14,223,217							2,800,000,000
Tax contingent liability [member] | Brazilian ministry of communications [member]
Disclosure of commitments and contingencies [line items]
Provision			$ 5,115,278								R$ 1,007,000
Tax contingent liability [member] | ISS [member]
Disclosure of commitments and contingencies [line items]
Provision	3,637,080							716,000
Contingent liabilities [member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	12,394,517							2,440,000,000
Contingent liabilities [member] | TFI [member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	13,207,273							2,600,000
Legal proceedings contingent liability [member]
Disclosure of commitments and contingencies [line items]
Provision	$ 3,419,668							R$ 673,200
Consorcio Ecuatoriano de Telecomunicaciones, S.A. (Conecel) [member]
Disclosure of commitments and contingencies [line items]
Amount of fine						$ 2,724,113	$ 138,400
Number of locations alleged for monopoly						5	5
Mexican tax administration service [member]
Disclosure of commitments and contingencies [line items]
Consolidated tax loss						$ 0
Mexican tax administration service [member] | Previous IFRS [member]
Disclosure of commitments and contingencies [line items]
Consolidated tax loss						8,556,000
Mexican tax administration service [member] | Tax contingent liability [member]
Disclosure of commitments and contingencies [line items]
Tax assessment related to tax return						$ 529,700
Mexican tax administration service [member] | Tax contingent liability [member] | America Central Tel, S.A de C.V [member]
Disclosure of commitments and contingencies [line items]
Tax assessment for alleged tax improprieties												$ 1,400,000

XML

Commitments and Contingencies - Schedule of Purchase Commitments (Detail) - Wireless carriers [member] - Purchase commitment for purchase of airtime minutes at current market prices [member] $ in Thousands	Dec. 31, 2018 MXN ($)
Disclosure of commitments [line items]
Purchase commitments	$ 225,084,826
2019 [member]
Disclosure of commitments [line items]
Purchase commitments	88,233,626
2020 [member]
Disclosure of commitments [line items]
Purchase commitments	68,170,083
2021 [member]
Disclosure of commitments [line items]
Purchase commitments	55,358,156
2022 [member]
Disclosure of commitments [line items]
Purchase commitments	$ 13,322,961

XML

Employee Benefits - Analysis of Net Liability and Net Period Cost for Employee Benefit (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	$ 118,325,014	$ 120,297,139
Net period cost (benefit)
Net period cost (benefit)	13,989,100	13,636,182	$ 14,240,271
Mexico [member]
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	85,517,190	84,821,197
Net period cost (benefit)
Net period cost (benefit)	12,046,208	11,586,065	12,281,154
Puerto Rico [member]
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	13,986,596	13,962,128
Net period cost (benefit)
Net period cost (benefit)	686,067	776,238	1,058,131
Europe [member]
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	12,705,926	14,833,840
Net period cost (benefit)
Net period cost (benefit)	619,039	385,689	226,447
Brazil [member]
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	5,666,694	6,276,780
Net period cost (benefit)
Net period cost (benefit)	579,432	735,855	633,159
Ecuador [member]
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	448,608	403,194
Net period cost (benefit)
Net period cost (benefit)	$ 58,354	$ 152,335	$ 41,380

XML

Employee Benefits - Summary of Defined Benefit Obligation (DBO) and Plan Assets for Pension and Other Benefit Obligation Plans (Detail) - MXN ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	$ (108,118,868)	$ (107,944,581)	$ (98,020,192)	$ (106,638,436)
Reportable segments [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	107,906,727	107,772,175
Reportable segments [member] | Mexico [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	84,592,642	83,765,572
Reportable segments [member] | Puerto Rico [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	13,986,596	13,962,128
Reportable segments [member] | Brazil [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	4,850,447	5,489,563
Reportable segments [member] | Europe [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	4,477,042	4,554,912
Defined benefit obligation [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	(306,702,447)	(329,113,625)	(313,282,595)	(314,049,729)
Defined benefit obligation [member] | Reportable segments [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	306,490,306	328,941,219
Defined benefit obligation [member] | Reportable segments [member] | Mexico [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	247,997,060	266,304,948
Defined benefit obligation [member] | Reportable segments [member] | Puerto Rico [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	35,220,889	38,711,695
Defined benefit obligation [member] | Reportable segments [member] | Brazil [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	18,795,315	19,369,664
Defined benefit obligation [member] | Reportable segments [member] | Europe [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	4,477,042	4,554,912
Plan assets [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	203,671,122	227,688,604	222,345,621	212,234,440
Plan assets [member] | Reportable segments [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	(203,671,122)	(227,688,604)
Plan assets [member] | Reportable segments [member] | Mexico [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	(163,404,418)	(182,539,376)
Plan assets [member] | Reportable segments [member] | Puerto Rico [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	(21,234,293)	(24,749,567)
Plan assets [member] | Reportable segments [member] | Brazil [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	(19,032,411)	(20,399,661)
Effect of asset celling [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	(5,087,543)	(6,519,560)	$ (7,083,218)	$ (4,823,147)
Effect of asset celling [member] | Reportable segments [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	5,087,543	6,519,560
Effect of asset celling [member] | Reportable segments [member] | Brazil [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	$ 5,087,543	$ 6,519,560

XML

Employee Benefits - Summary of the Actuarial Results Generated for the Pension and Retirement Plans as well as the Medical Services (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of actuarial results generated for the pension and retirement plans [line items]
Balance at the beginning of the year	$ 107,944,581	$ 98,020,192	$ 106,638,436
Current service cost	3,322,813	4,285,693	4,606,856
Interest cost on projected benefit obligation	30,185,257	28,922,385	27,275,363
Expected return on plan assets	(20,804,104)	(20,916,104)	(18,972,042)
Changes in the asset ceiling during the period and others	587,373	716,330	875,192
Past service costs and other	157,765	53,032	165,851
Actuarial gain for changes in experience	(7,222)	(35,145)	(28,867)
Actuarial gain from changes in demographic assumptions	134,625	(85)
Actuarial (gain) loss from changes in financial assumptions	(24,890)	(4,294)	7,784
Net period cost	13,551,617	13,021,812	13,930,137
Actuarial loss for changes in experience		11,671,860
Actuarial gain for changes in experience	(21,283,470)		(20,976,837)
Actuarial gain from changes in demographic assumptions		(381,172)
Actuarial loss from changes in demographic assumptions	68,482		397,985
Actuarial loss from changes in financial assumptions			1,718,189
Actuarial gain (loss) from changes in financial assumptions	(1,246,539)	2,438,078
Changes in the asset ceiling during the period and others	(1,055,409)	(856,188)	(754,535)
Return on plan assets greater than discount rate	23,503,296	(2,483,430)	(4,724,041)
Recognized in other comprehensive income	(13,640)	10,389,148	(24,339,239)
Contributions to the pension plan made by the Company	(1,565,792)	(2,697,621)	(2,756,519)
Benefits paid			(176,702)
Payments to employees	(10,651,938)	(9,843,743)	(525,612)
Effect of translation	(1,145,960)	(945,207)	5,249,691
Others	(13,363,690)	(13,486,571)	1,790,858
Balance at the end of the year	108,118,868	107,944,581	98,020,192
Less short-term portion	(212,141)	(172,406)	(152,448)
Non-current obligation	107,906,727	107,772,175	97,867,744
Defined benefit obligation [member]
Disclosure of actuarial results generated for the pension and retirement plans [line items]
Balance at the beginning of the year	329,113,625	313,282,595	314,049,729
Current service cost	3,322,813	4,285,693	4,606,856
Interest cost on projected benefit obligation	30,185,257	28,922,385	27,275,363
Actuarial gain for changes in experience	(7,222)	(35,145)	(28,867)
Actuarial gain from changes in demographic assumptions	134,625	(85)
Actuarial (gain) loss from changes in financial assumptions	(24,890)	(4,294)	7,784
Net period cost	33,610,583	33,168,554	31,861,136
Actuarial loss for changes in experience		11,671,860
Actuarial gain for changes in experience	(21,283,470)		(20,976,837)
Actuarial gain from changes in demographic assumptions		(381,172)
Actuarial loss from changes in demographic assumptions	68,482		397,985
Actuarial loss from changes in financial assumptions			1,718,189
Actuarial gain (loss) from changes in financial assumptions	(1,246,539)	2,438,078
Recognized in other comprehensive income	(22,461,527)	13,728,766	(18,860,663)
Contributions made by plan participants	173,722	198,713	255,760
Benefits paid	(19,546,541)	(18,841,754)	(25,694,301)
Payments to employees	(10,651,938)	(9,843,743)	(525,612)
Effect of translation	(3,535,477)	(2,579,506)	12,196,546
Others	(33,560,234)	(31,066,290)	(13,767,607)
Balance at the end of the year	306,702,447	329,113,625	313,282,595
Less short-term portion	(212,141)	(172,406)	(152,448)
Non-current obligation	306,490,306	328,941,219	313,130,147
Plan assets [member]
Disclosure of actuarial results generated for the pension and retirement plans [line items]
Balance at the beginning of the year	(227,688,604)	(222,345,621)	(212,234,440)
Expected return on plan assets	(20,804,104)	(20,916,104)	(18,972,042)
Past service costs and other	157,765	53,032	165,851
Net period cost	(20,646,339)	(20,863,072)	(18,806,191)
Return on plan assets greater than discount rate	23,503,296	(2,483,430)	(4,724,041)
Recognized in other comprehensive income	23,503,296	(2,483,430)	(4,724,041)
Contributions made by plan participants	(173,722)	(198,713)	(255,760)
Contributions to the pension plan made by the Company	(1,565,792)	(2,697,621)	(2,756,519)
Benefits paid	19,546,541	18,841,754	25,517,599
Effect of translation	3,353,498	2,058,099	(9,086,269)
Others	21,160,525	18,003,519	13,419,051
Balance at the end of the year	(203,671,122)	(227,688,604)	(222,345,621)
Non-current obligation	(203,671,122)	(227,688,604)	(222,345,621)
Effect of asset celling [member]
Disclosure of actuarial results generated for the pension and retirement plans [line items]
Balance at the beginning of the year	6,519,560	7,083,218	4,823,147
Changes in the asset ceiling during the period and others	587,373	716,330	875,192
Net period cost	587,373	716,330	875,192
Changes in the asset ceiling during the period and others	(1,055,409)	(856,188)	(754,535)
Recognized in other comprehensive income	(1,055,409)	(856,188)	(754,535)
Effect of translation	(963,981)	(423,800)	2,139,414
Others	(963,981)	(423,800)	2,139,414
Balance at the end of the year	5,087,543	6,519,560	7,083,218
Non-current obligation	$ 5,087,543	$ 6,519,560	$ 7,083,218

XML

Employee Benefits - Additional Information (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of defined benefit plans [line items]
Current service cost	$ 3,322,813	$ 4,285,693	$ 4,606,856
Expected return on plan assets	20,804,104	20,916,104	18,972,042
Net pension plan liability and plan assets	$ (108,118,868)	(107,944,581)	(98,020,192)	$ (106,638,436)
Defined contribution plan, payment			(176,702)
Severance benefit obligations, description	Severance benefit obligations for employees hired before 1 January 2003, excluding civil servants, are covered by defined benefit plans. Upon termination by Telekom Austria Group or retirement, eligible employees receive severance payments equal to a multiple of their monthly compensation which comprises fixed compensation plus variable elements such as overtime or bonuses. Maximum severance is equal to a multiple of twelve times the eligible monthly compensation. In case of death, the heirs of eligible employees receive 50% of the severance benefits. Telekom Austria Group is exposed to the risk of development of salary increases and changes of interest rates.
Severance benefits, in case of death	50.00%
Akenes [member]
Disclosure of defined benefit plans [line items]
Defined Benefit Plan, Pension Benefit Obligation, Percentage	7.00%
Telekom Austria [member]
Disclosure of defined benefit plans [line items]
Defined benefits plan, eligibility retirement date	Jan. 01, 1975
Telekom Austria [member] | Defined Contribution Plans [member]
Disclosure of defined benefit plans [line items]
Annual expense of defined contribution plan	$ 272,453	256,507	258,891
Telekom Austria [member] | Unfunded Pension Plans [member]
Disclosure of defined benefit plans [line items]
Benefit determination maximum percentage on salary before retirement	80.00%
Telmexs [member]
Disclosure of defined benefit plans [line items]
Net pension plan liability and plan assets	$ 163,404,418	$ 182,539,376
Rate of equity instruments		32.00%
Rate of debt instruments	30.40%
Recorded of pension plan re-measurement value in defined pension plan	$ (1,141,142)	$ 12,394,617
Increase in fair value of related party pension plan investments	$ 21,279,760	437,663
Plan description	A percentage of the Telmex's employees are covered under defined benefit pension plans and seniority premiums. Pension benefits and seniority premiums are determined on the basis of compensation received by employees in their final year of employment, their seniority, and their retirement age. Telmex has set up an irrevocable trust fund to finance these employee benefits and has adopted the policy of making contributions to such fund when it is considered necessary.
Top of range [member] | Telekom Austria [member] | Defined Contribution Plans [member]
Disclosure of defined benefit plans [line items]
Percentage of defined contribution plan	5.00%
Austria [member]
Disclosure of defined benefit plans [line items]
Service award description	Civil servants and certain employees are eligible to receive certain service awards. Under such plans, eligible employees receive a cash bonus of two months’ salary after 25 years of service and four months’ salary after 40 years of service. Employees with at least 35 years of service when retiring (at the age of 65) or who are retiring under a specific legal regime are eligible to receive four monthly salaries. The compensation is accrued as earned over the period of service, taking into account the employee turnover rate.
Service period to receive bonus, description	After 25 years
Service period to receive bonus, description	After 40 years
Contributions to social security, net of the share contributed by civil servants	$ 1,420,446	1,309,157
Contributions to the government, net of the share contributed by civil servants	518,607	453,641
Austria [member] | Defined Contribution Plans [member]
Disclosure of defined benefit plans [line items]
DCP liability	$ 116,244	$ 120,892
Austria [member] | Telekom Austria [member]
Disclosure of defined benefit plans [line items]
Percentage of contribution to social security	12.55%	12.55%
Austria [member] | Telekom Austria [member] | Defined Contribution Plans [member]
Disclosure of defined benefit plans [line items]
Defined contribution plan, payment	$ 53,755	$ 46,084
Austria [member] | Bottom of range [member]
Disclosure of defined benefit plans [line items]
Service period to receive bonus, description	35 years of service when retiring (at the age of 65)
Percentage of contribution to active civil servants	7.00%
Austria [member] | Top of range [member]
Disclosure of defined benefit plans [line items]
Percentage of contribution to active civil servants	29.00%
Brazil [member]
Disclosure of defined benefit plans [line items]
Current service cost	$ 98,658	93,742	65,101
Employee benefits	724,009	650,815
Cost of labor	$ 2,377	374	(935)
Brazil [member] | Claro Brasil [member] | Defined Contribution Plans [member]
Disclosure of defined benefit plans [line items]
Unfunded liability, payment term	20 years
Unpaid balances adjustments	Unpaid balances are adjusted monthly based on the yield of the asset portfolio at that date and is increased based on the General Price Index of Brazil plus 6 percentage points per year
Increased percentage per year	6.00%
DCP liability	$ 92,238	136,402
Brazil [member] | Bottom of range [member] | Claro Brasil [member] | Participants enrolled before October 31st, 2014 [member]
Disclosure of defined benefit plans [line items]
Employee contributions to the plan	3.00%
Brazil [member] | Bottom of range [member] | Claro Brasil [member] | Participants enrolled after October 31st, 2014 [member]
Disclosure of defined benefit plans [line items]
Employee contributions to the plan	1.00%
Brazil [member] | Top of range [member] | Claro Brasil [member]
Disclosure of defined benefit plans [line items]
Employer contributions to the plan	8.00%
Brazil [member] | Top of range [member] | Claro Brasil [member] | Participants enrolled before October 31st, 2014 [member]
Disclosure of defined benefit plans [line items]
Employee contributions to the plan	8.00%
Brazil [member] | Top of range [member] | Claro Brasil [member] | Participants enrolled after October 31st, 2014 [member]
Disclosure of defined benefit plans [line items]
Employee contributions to the plan	7.00%
Mexico [member]
Disclosure of defined benefit plans [line items]
Current service cost		165,884	200,455
Expected return on plan assets	$ (16,347)
Employee benefits	924,548	1,055,625
Ecuador [member]
Disclosure of defined benefit plans [line items]
Current service cost	58,354	152,335	$ 41,380
Employee benefits	$ 448,608	$ 403,194

XML

Employee Benefits - Schedule of Plan Assets Invested (Detail)	Dec. 31, 2018	Dec. 31, 2017
Puerto Rico [member]
Disclosure of fair value of plan assets [line items]
Equity instruments	37.00%	37.00%
Debt instruments	60.00%	61.00%
Others	3.00%	2.00%
Total	100.00%	100.00%
Brazil [member]
Disclosure of fair value of plan assets [line items]
Equity instruments		6.00%
Debt instruments	94.00%	88.00%
Others	6.00%	6.00%
Total	100.00%	100.00%
Mexico [member]
Disclosure of fair value of plan assets [line items]
Equity instruments	39.00%	61.00%
Debt instruments	61.00%	39.00%
Total	100.00%	100.00%

XML

Employee Benefits - Summary of Assumptions Used in Determining the Net Period Cost (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Puerto Rico [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return	4.45%	3.61%	4.16%
Rate of future salary increases	2.75%	2.75%	3.50%
Percentage of increase in health care costs for the coming year	3.87%	3.57%	4.20%
Year to which this level will be maintained	N/A	N/A	N/A
Brazil [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return	9.10%	10.18%	10.84%
Rate of future salary increases	4.00%	4.50%	4.85%
Percentage of increase in health care costs for the coming year	10.50%	11.00%	11.35%
Year to which this level will be maintained	2029	2028	2017
Mexico [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return	11.81%	10.70%	10.70%
Rate of future salary increases	3.55%	4.50%	4.50%
Rate of increase of pensions	3.47%	3.83%	3.83%
Europe [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return	1.25%	1.00%	1.00%
Rate of future salary increases			3.00%
Rate of increase of pensions	1.60%	1.60%	1.60%
Europe [member] | Bottom of range [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Employee turnover rate	0.00%	0.00%	0.00%
Europe [member] | Top of range [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Employee turnover rate	1.51%	1.72%	1.88%
Europe [member] | Actuarial assumption rate one [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return	1.75%	1.50%	1.50%
Rate of future salary increases	3.00%	3.00%	3.90%
Europe [member] | Actuarial assumption rate two [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return	2.00%	2.00%	1.75%
Rate of future salary increases	3.50%	3.50%	4.40%
Europe [member] | Actuarial assumption rate three [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Rate of future salary increases	4.40%	4.40%

XML

Employee Benefits - Summary of Increase (Decrease) Would Have Resulted in the DBO Pension and Other Benefits (Detail) $ in Thousands	Dec. 31, 2018 MXN ($)
-100 [member] | Discount rate [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
DBO pension and other benefits	$ 37,185,664
-100 [member] | Health care cost trend rate [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
DBO pension and other benefits	(651,697)
+100 [member] | Discount rate [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
DBO pension and other benefits	(38,604,684)
+100 [member] | Health care cost trend rate [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
DBO pension and other benefits	$ 761,278

XML

Employee Benefits - Summary of Long-Term Direct Employee Benefits (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of long term direct employee benefits [abstract]
Beginning balance	$ 10,158,036	$ 11,251,499
Effect of translation	(493,795)	795,581
Increase of the year	1,750,831	771,274
Applications, Payments	(2,079,880)	(2,077,632)
Applications Applications, Reversals	(1,223,414)	(582,686)
Ending balance	$ 8,111,778	$ 10,158,036

XML

Financial Assets and Liabilities - Summary of Categorization of Financial Instruments, Excluding Cash and Cash Equivalents (Detail) - MXN ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financial Assets:
Financial Assets	$ 257,974,604	$ 294,846,664
Financial Liabilities:
Financial Liabilities	711,544,172	769,276,398
Loans and receivables [member]
Financial Assets:
Financial Assets	196,453,950	176,391,786
Loans and receivables [member] | Related parties [member]
Financial Assets:
Financial Assets	1,263,605	868,230
Fair value through profit or loss [member]
Financial Assets:
Financial Assets	5,287,548	8,037,384
Fair value through OCI [member]
Financial Assets:
Financial Assets	39,028,083	46,682,657
Equity investments at fair value through OCI and other short term investments [member]
Financial Assets:
Financial Assets	49,015,934	59,120,676
Equity investments at fair value through OCI and other short term investments [member] | Loans and receivables [member]
Financial Assets:
Financial Assets	9,987,851	12,438,019
Equity investments at fair value through OCI and other short term investments [member] | Fair value through OCI [member]
Financial Assets:
Financial Assets	39,028,083	46,682,657
Accounts receivable from subscribers distributors contractual assets and other net [member] | Loans and receivables [member]
Financial Assets:
Financial Assets	185,202,494	163,085,537
Financial instruments, class [member]
Financial Liabilities:
Financial Liabilities	17,107,579	14,359,460
Financial instruments, class [member] | Fair value through profit or loss [member]
Financial Assets:
Financial Assets	5,287,548	8,037,384
Loans and receivables [member]
Financial Liabilities:
Financial Liabilities	863,853,933	913,098,718
Loans and receivables [member] | Related parties [member]
Financial Liabilities:
Financial Liabilities	2,974,213	2,540,412
Loans and receivables [member] | Equity investments at fair value through OCI and other short term investments [member]
Financial Liabilities:
Financial Liabilities	638,922,453	697,884,899
Loans and receivables [member] | Accounts receivable from subscribers distributors contractual assets and other net [member]
Financial Liabilities:
Financial Liabilities	221,957,267	212,673,407
Fair value through profit or loss [Member]
Financial Liabilities:
Financial Liabilities	17,107,579	14,359,460
Fair value through profit or loss [Member] | Financial instruments, class [member]
Financial Liabilities:
Financial Liabilities	$ 17,107,579	$ 14,359,460

XML

Financial Assets and Liabilities - Summary of Fair Value for Financial Assets (Excluding Cash and Cash Equivalents) and Financial Liabilities (Detail) - MXN ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets:
Financial Assets	$ 257,974,604	$ 294,846,664
Liabilities:
Financial Liabilities	711,544,172	769,276,398
Debt [member]
Liabilities:
Financial Liabilities	694,436,593	754,916,938
Financial instruments, class [member]
Liabilities:
Financial Liabilities	17,107,579	14,359,460
Equity investments at fair value through OCI and other short term investments [member]
Assets:
Financial Assets	49,015,934	59,120,676
Pension plan assets [member]
Assets:
Financial Assets	203,671,122	227,688,604
Derivative Financial Instruments [Member]
Assets:
Financial Assets	5,287,548	8,037,384
Level 1 [member]
Assets:
Financial Assets	225,585,814	265,201,015
Liabilities:
Financial Liabilities	594,713,342	691,769,785
Level 1 [member] | Debt [member]
Liabilities:
Financial Liabilities	594,713,342	691,769,785
Level 1 [member] | Equity investments at fair value through OCI and other short term investments [member]
Assets:
Financial Assets	39,028,083	46,682,657
Level 1 [member] | Pension plan assets [member]
Assets:
Financial Assets	186,557,731	218,518,358
Level 2 [member]
Assets:
Financial Assets	32,371,743	29,514,673
Liabilities:
Financial Liabilities	116,830,830	77,506,613
Level 2 [member] | Debt [member]
Liabilities:
Financial Liabilities	99,723,251	63,147,153
Level 2 [member] | Financial instruments, class [member]
Liabilities:
Financial Liabilities	17,107,579	14,359,460
Level 2 [member] | Equity investments at fair value through OCI and other short term investments [member]
Assets:
Financial Assets	9,987,851	12,438,019
Level 2 [member] | Pension plan assets [member]
Assets:
Financial Assets	17,096,344	9,039,270
Level 2 [member] | Derivative Financial Instruments [Member]
Assets:
Financial Assets	5,287,548	8,037,384
Level 3 [member]
Assets:
Financial Assets	17,047	130,976
Level 3 [member] | Pension plan assets [member]
Assets:
Financial Assets	$ 17,047	$ 130,976

XML

Financial Assets and Liabilities - Additional Information (Detail) - Level 2 [member] - MXN ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about financial instruments [line items]
Net realized gains (losses) related to derivative financial instruments	$ 5,286,290,000	$ 1,515,668,000
Transfers out of Level 1 into Level 2 of fair value hierarchy	$ 0	$ 0	$ 0

XML

Financial Assets and Liabilities - Summary of changes in liabilities arising from financing activities (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of reconciliation of liabilities arising from financing activities [abstract]
Beginning balance	$ 697,884,899	$ 707,801,403
Cash flow	(34,050,923)	(27,433,489)
Foreign currency exchange and other	(24,911,523)	17,516,985
Ending balance	$ 638,922,453	$ 697,884,899

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Shareholders' Equity - Additional Information (Detail) $ / shares in Units, $ in Thousands, $ in Millions					1 Months Ended	12 Months Ended
	Apr. 16, 2018 $ / shares	Nov. 13, 2017 shares	Jul. 17, 2017 shares	Apr. 05, 2017 $ / shares	Jan. 03, 2018 MXN ($)	Dec. 31, 2018 MXN ($) shares	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($) shares
Disclosure of classes of share capital [line items]
Capital requirements | $						$ 270,049
Number of shares issued						71,063,212,170
Number of shares outstanding						66,034,792,526		66,069,035,539
Number of treasury shares held						5,028,419,644		29,420,688,657
Merger transaction description						any transaction representing 20% or more of the Company’s consolidated assets	any transaction representing 20% or more of the Company’s consolidated assets
Legal reserve | $						$ 358,440		$ 358,440
Amount of Mexican withholding tax						10.00%	10.00%
Redemption of hybrid bond						$ (13,440,120)	$ (683)
Hybrid Bonds [member]
Disclosure of classes of share capital [line items]
Redemption of hybrid bond | $					$ 600,000
Payment for redemption of bond | $					$ 13,440,120
Bottom of range [member] | Legal reserve [member]
Disclosure of classes of share capital [line items]
Increase in legal reserve						5.00%	5.00%
Top of range [member] | Legal reserve [member]
Disclosure of classes of share capital [line items]
Increase in legal reserve						20.00%	20.00%
Capital Stock Class AA Voting Rights [member]
Disclosure of classes of share capital [line items]
Number of shares issued						20,601,632,660
Capital Stock Class A Voting Rights [member]
Disclosure of classes of share capital [line items]
Number of shares issued						558,677,704
Capital Stock Class L Limited Voting Rights [member]
Disclosure of classes of share capital [line items]
Number of shares issued						49,902,901,806
Capital Stock Class Aa [member]
Disclosure of classes of share capital [line items]
Number of shares outstanding						20,601,632,660		20,601,632,660
Dividends paid | $ / shares	$ 0.32			$ 0.30
Capital Stock Class Aa [member] | Bottom of range [member]
Disclosure of classes of share capital [line items]
Percentage of capital stock						20.00%
Capital Stock Class Aa [member] | Top of range [member]
Disclosure of classes of share capital [line items]
Percentage of capital stock						51.00%
Capital Stock Class A [member]
Disclosure of classes of share capital [line items]
Number of shares outstanding						546,112,938		566,661,526
Dividends paid | $ / shares	0.32			0.30
Capital Stock Class A [member] | Bottom of range [member]
Disclosure of classes of share capital [line items]
Percentage of capital stock						19.60%
Capital Stock Class A [member] | Top of range [member]
Disclosure of classes of share capital [line items]
Percentage of capital stock						49.00%
Capital Stock Class L [member]
Disclosure of classes of share capital [line items]
Number of shares outstanding						44,887,046,928		44,900,741,353
Dividends paid | $ / shares	0.32			0.30
Periodic payment of dividend | $ / shares	$ 0.16			$ 0.15
Periodic payable date of dividend	July 16 and November 12
Number of additional shares		16,905,414	325,264,125
Capital Stock Class L [member] | Top of range [member]
Disclosure of classes of share capital [line items]
Percentage of capital stock						80.00%
Class L [member]
Disclosure of classes of share capital [line items]
Number of treasury shares held						5,028,399,396		29,419,120,359
Class A [member]
Disclosure of classes of share capital [line items]
Number of treasury shares held						20,248		1,568,298

XML

Shareholders Equity - Summary of Computation of Basic and Diluted Earnings per Share (Detail) $ / shares in Units, $ in Thousands, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($) $ / shares shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 MXN ($) $ / shares shares	Dec. 31, 2016 MXN ($) $ / shares shares
Earnings per share [abstract]
Net profit for the period attributable to equity holders of the parent	$ 52,566,197	$ 2,670	$ 29,325,921	$ 8,649,427
Weighted average shares (in millions) | shares	66,055	66,055	65,909	65,693
Earnings per share attributable to equity holders of the parent | $ / shares	$ 0.79		$ 0.44	$ 0.13

XML

Components of Other Comprehensive (Loss) Income - Summary of Movement on Components of Other Comprehensive (Loss) Income (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)
Controlling interest:
Unrealized (loss) gain on equity investments at fair value, net of deferred taxes	$ (3,765,688)	$ (191)	$ 622,424	$ (6,673,731)
Translation effect of foreign entities	(64,314,032)		(18,309,877)	107,498,708
Total other comprehensive (loss) income items for the year, net of deferred taxes	(67,322,442)	$ (3,421)	(24,721,250)	115,647,505
Total equity attributable to equity holders of the parent [member]
Controlling interest:
Valuation of the derivative financial instruments, net of deferred taxes			12,292	48,496
Unrealized (loss) gain on equity investments at fair value, net of deferred taxes	(3,765,688)		622,424	(6,673,731)
Translation effect of foreign entities	(61,223,458)		(21,683,333)	104,178,880
Remeasurement of defined benefit plan, net of deferred taxes	652,722		(7,075,606)	14,771,770
Non-controlling interest of the items above	(2,986,018)		3,402,973	3,322,090
Total other comprehensive (loss) income items for the year, net of deferred taxes	$ (67,322,442)		$ (24,721,250)	$ 115,647,505

XML

Valuation of derivatives interest cost from labor obligations and other financial items net - Schedule of Valuation of Derivatives and Other Financial Items (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)
Disclosure of detailed information about financial instruments [abstract]
(Loss) gain in valuation of derivatives, net	$ (4,686,407)		$ 8,192,567	$ (9,622,233)
Capitalized interest expense (Note 10 d)	2,020,288		2,875,034	2,861,307
Commissions	(1,901,473)		(1,263,701)	(2,034,972)
Interest cost of labor obligations (Note 17)	(9,968,526)		(8,722,611)	(9,178,513)
Interest expense on taxes	(555,921)		(1,503,981)	(245,922)
Dividend received (Note 4)	2,605,333		2,385,559	5,740,092
Gain on net monetary positions (Note 2i, c)	4,429,145	$ 225
Other financial cost	(2,118,755)		(3,906,627)	(3,745,600)
Valuation of derivatives and other financial items	$ (10,176,316)	$ (517)	$ (1,943,760)	$ (16,225,841)

XML

Segments - Additional Information (Detail) - Operating segments [member]	12 Months Ended
	Dec. 31, 2018
Disclosure of Operating Segments [Line Items]
Percentage of entity revenue	10.00%
Percentage of taxable profit	10.00%
Percentage of consolidated assets	10.00%

XML

Segments - Summary of Operating Segments (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2015 MXN ($)
Disclosure of Operating Segments [Line Items]
External revenues	$ 1,038,207,681		$ 1,021,633,535	$ 975,412,488
Total revenues	1,038,207,681	$ 52,747	1,021,633,535	975,412,488
Depreciation and amortization	155,712,580	7,911	160,174,942	148,525,921
Operating income	139,557,171		100,143,303	109,610,310
Interest income	10,646,169	541	2,925,648	4,192,595
Interest expense	31,771,433	1,614	30,300,781	33,862,012
Income tax	46,477,079	2,361	24,941,511	11,398,856
Equity interest in net income (loss) of associated companies	267		91,385	189,950
Net profit (loss) attributable to equity holders of the parent	52,566,197	$ 2,670	29,325,921	8,649,427
Assets by segment	1,429,223,392		1,486,211,852	1,515,042,274	$ 72,613
Plant, property and equipment, net	640,000,720		676,343,198	701,190,066	32,516	$ 573,528,878
Goodwill	145,566,497		151,463,232	152,632,635	7,396
Trademarks, net	4,667,205		9,937,807	12,566,893
Licenses and rights, net	103,298,395		113,304,386	116,031,264
Investment in associated companies	3,132,707		3,735,172	3,603,484	159
Liabilities by segments	1,183,350,970		1,225,578,335	1,244,018,507	$ 60,121
Operating segments [member] | Mexico [member]
Disclosure of Operating Segments [Line Items]
External revenues	207,610,244		190,022,612	187,127,903
Intersegment revenues	16,946,543		16,748,428	16,438,858
Total revenues	224,556,787		206,771,040	203,566,761
Depreciation and amortization	17,619,342		17,030,251	16,451,496
Operating income	57,450,599		50,666,028	48,219,505
Interest income	26,578,280		30,083,437	28,659,372
Interest expense	32,526,258		32,185,868	32,004,944
Income tax	28,842,505		18,142,482	2,502,242
Equity interest in net income (loss) of associated companies	(5,962)		99,044	67,472
Net profit (loss) attributable to equity holders of the parent	23,185,029		26,321,442	378,150
Assets by segment	970,564,314		1,033,036,406	1,070,598,204
Plant, property and equipment, net	56,056,634		59,137,555	64,893,242
Goodwill	27,104,632		27,102,384	27,186,328
Trademarks, net	227,774		406,723	615,318
Licenses and rights, net	10,573,147		11,457,720	5,887,092
Investment in associated companies	5,621,661		469,662	7,605,220
Liabilities by segments	748,965,728		794,598,013	798,044,609
Operating segments [member] | Telmex [member]
Disclosure of Operating Segments [Line Items]
External revenues	86,339,289		89,731,238	93,343,612
Intersegment revenues	9,741,908		8,753,525	8,872,248
Total revenues	96,081,197		98,484,763	102,215,860
Depreciation and amortization	18,358,248		18,902,238	17,150,013
Operating income	8,085,764		7,921,524	12,275,892
Interest income	420,380		619,748	303,915
Interest expense	1,153,913		1,028,593	1,135,552
Income tax	643,377		387,145	921,803
Equity interest in net income (loss) of associated companies	44,965		16,564	116,368
Net profit (loss) attributable to equity holders of the parent	(2,201,572)		184,387	902,282
Assets by segment	174,461,398		170,402,561	161,133,722
Plant, property and equipment, net	103,737,293		109,713,770	112,220,236
Goodwill	215,381		213,926	213,926
Trademarks, net	243,556		274,786	307,881
Licenses and rights, net			13,175	42,867
Investment in associated companies	563,667		546,872	2,218,824
Liabilities by segments	136,993,838		133,428,178	117,663,161
Operating segments [member] | Brazil [member]
Disclosure of Operating Segments [Line Items]
External revenues	188,712,666		210,536,673	193,796,237
Intersegment revenues	4,593,760		4,785,601	3,560,388
Total revenues	193,306,426		215,322,274	197,356,625
Depreciation and amortization	42,857,751		51,486,652	47,170,935
Operating income	23,494,903		11,601,369	6,325,323
Interest income	11,303,888		3,792,242	3,747,684
Interest expense	20,377,191		23,578,083	22,970,335
Income tax	4,026,444		(2,991,377)	(4,294,040)
Equity interest in net income (loss) of associated companies	(152)		(232)	(270)
Net profit (loss) attributable to equity holders of the parent	3,530,653		(6,617,381)	(10,357,493)
Assets by segment	390,791,480		428,281,963	461,831,754
Plant, property and equipment, net	173,197,708		187,459,628	203,270,555
Goodwill	21,388,124		24,708,739	26,106,622
Trademarks, net	124,910		246,557	366,727
Licenses and rights, net	25,873,910		35,662,305	41,496,209
Investment in associated companies	543		640	699
Liabilities by segments	298,308,084		322,620,030	349,915,118
Operating segments [member] | Southern Cone [member]
Disclosure of Operating Segments [Line Items]
External revenues	89,149,978		81,092,885	71,553,356
Intersegment revenues	13,200,358		1,250,983	776,719
Total revenues	102,350,336		82,343,868	72,330,075
Depreciation and amortization	13,526,361		10,639,591	9,739,634
Operating income	16,975,797		11,676,427	8,317,053
Interest income	2,251,474		2,884,613	2,649,539
Interest expense	4,338,941		4,637,989	5,049,457
Income tax	1,390,039		3,535,302	2,021,090
Equity interest in net income (loss) of associated companies	(20,871)		(9,801)	(23,319)
Net profit (loss) attributable to equity holders of the parent	6,065,703		4,421,938	3,765,015
Assets by segment	127,946,573		133,136,177	140,617,162
Plant, property and equipment, net	62,988,635		69,006,093	67,023,143
Goodwill	2,796,759		3,073,444	3,006,448
Licenses and rights, net	12,555,496		8,885,086	8,760,860
Investment in associated companies	20,697		63,110	81,284
Liabilities by segments	94,550,901		119,123,646	124,149,687
Operating segments [member] | Columbia [member]
Disclosure of Operating Segments [Line Items]
External revenues	75,460,428		72,435,460	67,330,768
Intersegment revenues	344,517		304,555	257,767
Total revenues	75,804,945		72,740,015	67,588,535
Depreciation and amortization	13,464,867		12,373,790	11,283,749
Operating income	14,388,552		(4,704,165)	11,209,959
Interest income	1,013,839		211,521	104,304
Interest expense	2,913,881		1,955,688	1,079,989
Income tax	2,251,877		(1,874,594)	4,456,750
Net profit (loss) attributable to equity holders of the parent	9,165,801		(6,209,530)	4,022,633
Assets by segment	111,975,598		108,362,023	103,361,235
Plant, property and equipment, net	51,422,548		57,060,931	59,690,886
Goodwill	12,770,380		13,981,033	14,659,891
Trademarks, net				194
Licenses and rights, net	3,400,235		4,197,498	4,603,793
Investment in associated companies	412		451	470
Liabilities by segments	56,211,438		54,756,152	40,811,337
Operating segments [member] | Andean [member]
Disclosure of Operating Segments [Line Items]
External revenues	55,633,192		56,393,595	55,825,972
Intersegment revenues	154,082		177,856	304,834
Total revenues	55,787,274		56,571,451	56,130,806
Depreciation and amortization	8,516,960		8,328,705	7,764,474
Operating income	5,003,915		5,650,477	6,086,638
Interest income	1,666,879		1,793,974	944,945
Interest expense	1,719,663		1,573,929	1,147,380
Income tax	2,498,666		1,806,085	1,768,066
Net profit (loss) attributable to equity holders of the parent	1,730,933		1,595,382	3,621,863
Assets by segment	96,347,779		113,478,626	113,839,981
Plant, property and equipment, net	35,800,477		35,930,966	37,716,772
Goodwill	5,242,365		6,113,495	5,948,335
Licenses and rights, net	9,651,582		11,295,202	12,882,210
Liabilities by segments	50,064,761		48,656,628	52,949,608
Operating segments [member] | Central America [member]
Disclosure of Operating Segments [Line Items]
External revenues	44,883,585		44,094,835	42,131,666
Intersegment revenues	149,445		187,086	289,465
Total revenues	45,033,030		44,281,921	42,421,131
Depreciation and amortization	8,940,655		9,668,439	10,474,681
Operating income	4,867,763		5,252,401	3,830,974
Interest income	1,566,086		1,064,992	462,779
Interest expense	509,081		485,684	411,597
Income tax	2,533,600		2,025,618	3,291,776
Equity interest in net income (loss) of associated companies				171
Net profit (loss) attributable to equity holders of the parent	2,821,733		3,713,301	538,890
Assets by segment	81,640,157		81,529,691	80,832,029
Plant, property and equipment, net	37,146,601		39,050,481	41,808,573
Goodwill	5,466,871		5,597,990	5,652,268
Licenses and rights, net	3,605,416		3,376,106	3,993,120
Investment in associated companies	24,262		16,999	17,390
Liabilities by segments	28,592,953		35,501,900	38,095,161
Operating segments [member] | U.S.A [member]
Disclosure of Operating Segments [Line Items]
External revenues	153,266,315		148,589,487	140,856,365
Intersegment revenues			44
Total revenues	153,266,315		148,589,531	140,856,365
Depreciation and amortization	1,545,395		1,594,727	1,073,623
Operating income	2,665,270		2,915,123	1,220,601
Interest income	559,548		394,196	239,797
Income tax	810,898		1,803,555	767,295
Net profit (loss) attributable to equity holders of the parent	2,820,505		1,793,875	987,790
Assets by segment	38,814,907		40,761,830	42,812,349
Plant, property and equipment, net	1,356,237		1,693,642	1,949,166
Goodwill	3,328,533		3,341,956	3,464,217
Trademarks, net	507,033		631,024	788,228
Liabilities by segments	35,552,678		38,249,957	41,369,767
Operating segments [member] | Caribbean [member]
Disclosure of Operating Segments [Line Items]
External revenues	36,435,541		35,092,578	36,467,781
Intersegment revenues	204,294		122,656	30,210
Total revenues	36,639,835		35,215,234	36,497,991
Depreciation and amortization	5,036,831		5,349,757	5,225,498
Operating income	5,811,846		4,752,168	6,143,183
Interest income	1,458,874		1,111,980	691,132
Interest expense	561,867		377,727	143,322
Income tax	2,774,204		3,529,253	2,542,080
Net profit (loss) attributable to equity holders of the parent	3,644,697		1,262,073	3,318,960
Assets by segment	102,531,547		88,672,466	93,941,695
Plant, property and equipment, net	38,011,242		32,173,524	33,854,428
Goodwill	14,186,723		14,186,723	14,186,723
Trademarks, net	249,984		262,641	284,665
Licenses and rights, net	10,294,336		7,276,039	7,694,798
Liabilities by segments	58,716,154		43,978,410	44,790,656
Operating segments [member] | Europe [member]
Disclosure of Operating Segments [Line Items]
External revenues	100,716,443		93,644,172	86,978,828
Total revenues	100,716,443		93,644,172	86,978,828
Depreciation and amortization	26,838,972		25,222,962	22,525,050
Operating income	4,731,562		4,523,857	5,388,595
Interest income	122,133		307,021	286,784
Interest expense	1,973,431		2,035,716	2,953,033
Income tax	707,093		(1,417,358)	(2,578,206)
Equity interest in net income (loss) of associated companies	(17,713)		(14,190)	29,528
Net profit (loss) attributable to equity holders of the parent	3,809,694		5,656,132	7,065,769
Assets by segment	186,135,358		203,858,243	227,288,156
Plant, property and equipment, net	80,421,642		85,116,608	78,763,065
Goodwill	53,066,729		53,143,542	52,207,877
Trademarks, net	3,313,948		8,116,076	10,203,880
Licenses and rights, net	27,344,273		31,141,255	30,670,315
Investment in associated companies	748,674		806,950	1,072,778
Liabilities by segments	117,214,746		119,240,533	121,928,202
Eliminations [member]
Disclosure of Operating Segments [Line Items]
Intersegment revenues	(45,334,907)		(32,330,734)	(30,530,489)
Total revenues	(45,334,907)		(32,330,734)	(30,530,489)
Depreciation and amortization	(992,802)		(422,170)	(333,232)
Operating income	(3,918,800)		(111,906)	592,587
Interest income	(36,295,212)		(39,338,076)	(33,897,656)
Interest expense	(34,302,793)		(37,558,496)	(33,033,597)
Income tax	(1,624)		(4,600)
Net profit (loss) attributable to equity holders of the parent	(2,006,979)		(2,795,698)	(5,594,432)
Assets by segment	(851,985,719)		(915,308,134)	(981,214,013)
Plant, property and equipment, net	(138,297)
Investment in associated companies	(3,847,209)		1,830,488	(7,393,181)
Liabilities by segments	$ (441,820,311)		$ (484,575,112)	$ (485,698,799)

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Recently Issued Accounting Standards - Additional Information (Detail) - Increase (decrease) due to application of IFRS 16 [member]	Dec. 31, 2018 MXN ($)
Bottom of range [member]
Disclosure of changes in accounting estimates [line items]
Right of use assets	$ 113,000,000
Lease liabilities	113,000,000
Top of range [member]
Disclosure of changes in accounting estimates [line items]
Right of use assets	132,000,000
Lease liabilities	$ 132,000,000

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Subsequent Events - Additional Information (Detail) $ in Thousands, $ in Thousands			12 Months Ended
	Jan. 24, 2019 MXN ($)	Jan. 24, 2019 USD ($)	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Mar. 18, 2019
Disclosure of non-adjusting events after reporting period [line items]
Percentage of agreement to acquire			80.00%	80.00%
Major business combination [member] | Telefnica Mviles Guatemala S A [member]
Disclosure of non-adjusting events after reporting period [line items]
Percentage of agreement to acquire	100.00%	100.00%
Purchase price paid	$ 6,326,068	$ 333,000
Major business combination [member] | Telefnica Mviles El Salvador S A de C V [member]
Disclosure of non-adjusting events after reporting period [line items]
Percentage of agreement to acquire	99.30%	99.30%
Purchase price paid	$ 5,984,118	$ 315,000
Major business combination [member] | Nextel Telecomunicacoes Ltda [member]
Disclosure of non-adjusting events after reporting period [line items]
Percentage of agreement to acquire					100.00%
Purchase price paid			$ 17,487,578	$ 905,000

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Supplemental Guarantor Information - Condensed Consolidating Statements of Financial Position (Detail) $ in Thousands, $ in Millions	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2015 MXN ($)
Assets:
Cash and cash equivalents	$ 21,659,962	$ 1,100	$ 24,270,473	$ 1,233	$ 23,218,383	$ 45,160,032
Equity investments at fair value through OCI and other short-term investments	49,015,934	2,490	59,120,676
Accounts receivable and derivative financial instruments	221,514,468		201,813,528
Related parties	1,263,605	64	868,230
Inventories, net	40,305,362	2,048	38,809,565
Other current assets	15,296,193	777	17,352,746
Property, plant and equipment, net	640,000,720	32,516	676,343,198		701,190,066	573,528,878
Investments in associated companies	3,132,707	159	3,735,172		3,603,484
Intangible assets and other non- current assets, net	437,034,441		463,898,264
Total assets	1,429,223,392	72,613	1,486,211,852		1,515,042,274
Liabilities:
Short-term debt and current portion of long-term debt	96,230,634	4,889	51,745,841
Current liabilities	370,860,255		361,590,656
Long-term debt	542,691,819	27,572	646,139,058
Other non-current liabilities	173,568,262		166,102,780
Total liabilities	1,183,350,970	60,121	1,225,578,335		1,244,018,507
Equity attributable to equity holders of the parent	195,995,645	9,958	194,164,312
Non-controlling interests	49,876,777	2,534	66,469,205
Total equity	245,872,422	12,492	260,633,517		271,023,767	160,854,186
Total liabilities and equity	1,429,223,392	$ 72,613	1,486,211,852
Parent [member]
Assets:
Cash and cash equivalents	8,335,101		7,018,559		4,107,645	13,803,584
Equity investments at fair value through OCI and other short-term investments	9,511,368		10,303,535
Accounts receivable and derivative financial instruments	31,462,176		9,874,652
Related parties	199,566,671		208,240,067
Inventories, net	215,055		264,649
Other current assets			17,805,747
Property, plant and equipment, net	1,340,358		1,996,721
Investments in associated companies	734,944,344		747,771,790
Intangible assets and other non- current assets, net	4,113,902		4,104,268
Total assets	989,488,975		1,007,379,988
Liabilities:
Short-term debt and current portion of long-term debt	52,827,411		34,345,398
Current liabilities	153,489,868		161,940,198
Long-term debt	456,918,590		547,728,176
Other non-current liabilities	130,257,461		69,201,904
Total liabilities	793,493,330		813,215,676
Equity attributable to equity holders of the parent	195,995,645		194,164,312
Total equity	195,995,645		194,164,312
Total liabilities and equity	989,488,975		1,007,379,988
Wholly-owned guarantor subsidiary [member]
Assets:
Cash and cash equivalents	1,745,895		3,553,352		1,948,159	1,468,036
Accounts receivable and derivative financial instruments	35,671,582		24,064,936
Related parties	1,144,534		957,704
Inventories, net	18,495,502		16,700,837
Other current assets	1,218,764		922,245
Property, plant and equipment, net	23,192,546		24,287,904
Investments in associated companies	88,070,845		35,569,788
Intangible assets and other non- current assets, net	26,176,381		73,557,904
Total assets	195,716,049		179,614,670
Liabilities:
Current liabilities	72,282,238		41,304,845
Other non-current liabilities	109,368,210		132,728,838
Total liabilities	181,650,448		174,033,683
Equity attributable to equity holders of the parent	14,065,601		5,580,987
Total equity	14,065,601		5,580,987
Total liabilities and equity	195,716,049		179,614,670
Combined non-guarantor subsidiaries [member]
Assets:
Cash and cash equivalents	11,578,966		13,698,562		$ 17,162,579	$ 29,888,412
Equity investments at fair value through OCI and other short-term investments	39,504,566		48,817,141
Accounts receivable and derivative financial instruments	154,380,710		167,873,940
Related parties	560,142,367		503,895,549
Inventories, net	21,594,805		21,844,079
Other current assets	14,077,429		(1,375,246)
Property, plant and equipment, net	615,467,816		650,058,573
Investments in associated companies	16,926,615		3,457,152
Intangible assets and other non- current assets, net	406,744,158		386,236,092
Total assets	1,840,417,432		1,794,505,842
Liabilities:
Short-term debt and current portion of long-term debt	43,403,223		17,400,443
Current liabilities	597,174,025		797,880,314
Long-term debt	85,773,229		98,410,882
Other non-current liabilities	242,232,897		40,909,234
Total liabilities	968,583,374		954,600,873
Equity attributable to equity holders of the parent	760,485,332		741,988,231
Non-controlling interests	111,348,726		97,916,738
Total equity	871,834,058		839,904,969
Total liabilities and equity	1,840,417,432		1,794,505,842
Eliminations [member]
Assets:
Related parties	(759,589,967)		(712,225,090)
Investments in associated companies	(836,809,097)		(783,063,558)
Total assets	(1,596,399,064)		(1,495,288,648)
Liabilities:
Current liabilities	(452,085,876)		(639,534,701)
Other non-current liabilities	(308,290,306)		(76,737,196)
Total liabilities	(760,376,182)		(716,271,897)
Equity attributable to equity holders of the parent	(774,550,933)		(747,569,218)
Non-controlling interests	(61,471,949)		(31,447,533)
Total equity	(836,022,882)		(779,016,751)
Total liabilities and equity	$ (1,596,399,064)		$ (1,495,288,648)

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Supplemental Guarantor Information - Condensed Consolidating Statements of Comprehensive Income (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)
Disclosure of information about consolidated structured entities [line items]
Total revenues	$ 1,038,207,681	$ 52,747	$ 1,021,633,535	$ 975,412,488
Total cost and operating expenses	898,650,510	45,657	921,490,232	865,802,178
Operating income	139,557,171	7,090	100,143,303	109,610,310
Interest (expense) income, net	(21,125,264)		(27,375,133)	(29,669,417)
Foreign currency exchange (loss) gain, net	(7,261,956)		(13,818,951)	(40,427,407)
Other financing cost, net	(10,176,316)		(1,943,760)	(16,225,841)
Income tax	46,477,079	2,361	24,941,511	11,398,856
Equity interest in net income of associated companies	267		91,385	189,950
Net profit (loss)	54,516,823		32,155,333	12,078,739
Distribution of the net profit (loss) to:
Equity owners of holding company	52,566,197	2,670	29,325,921	8,649,427
Non-controlling interest	1,950,626	100	2,829,412	3,429,312
Net profit (loss)	54,516,823		32,155,333	12,078,739
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities	(64,314,032)	(3,268)	(18,309,877)	107,498,708
Effect of fair value of derivatives, net of deferred taxes			12,292	49,129
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect	757,278	38	(7,046,089)	14,773,399
Equity investments at fair value	(3,765,688)	(191)	622,424	(6,673,731)
Total other comprehensive income (loss) items for the year, net of deferred taxes	(67,322,442)	(3,421)	(24,721,250)	115,647,505
Total comprehensive income (loss) for the year	(12,805,619)	(651)	7,434,083	127,726,244
Comprehensive income for the period attributable to:
Equity holders of the parent	(11,770,227)	(598)	1,201,698	120,974,842
Non-controlling interests	(1,035,392)	(53)	6,232,385	6,751,402
Total comprehensive income (loss) for the year	(12,805,619)	$ (651)	7,434,083	127,726,244
Parent [member]
Disclosure of information about consolidated structured entities [line items]
Total revenues	170,887,145		160,057,511	137,236,301
Total cost and operating expenses	129,039,749		123,548,341	117,835,634
Operating income	41,847,396		36,509,170	19,400,667
Interest (expense) income, net	(24,831,538)		(16,779,235)	(12,331,095)
Foreign currency exchange (loss) gain, net	11,805,283		(15,223,111)	(46,625,392)
Other financing cost, net	(4,443,892)		6,775,455	(10,475,673)
Income tax	17,754,010		14,201,399	(7,712,179)
Equity interest in net income of associated companies	46,101,188		32,245,041	50,968,741
Net profit (loss)	52,724,427		29,325,921	8,649,427
Distribution of the net profit (loss) to:
Equity owners of holding company	52,724,427		29,325,921	8,649,427
Net profit (loss)	52,724,427		29,325,921	8,649,427
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities	(61,223,458)		(21,683,333)	104,178,880
Effect of fair value of derivatives, net of deferred taxes			12,292	48,496
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect	652,722		(7,075,606)	14,771,770
Equity investments at fair value	(3,765,688)		622,424	(6,673,731)
Total other comprehensive income (loss) items for the year, net of deferred taxes	(64,336,424)		(28,124,223)	112,325,415
Total comprehensive income (loss) for the year	(11,611,997)		1,201,698	120,974,842
Comprehensive income for the period attributable to:
Equity holders of the parent	(11,611,997)		1,201,698	120,974,842
Total comprehensive income (loss) for the year	(11,611,997)		1,201,698	120,974,842
Wholly-owned guarantor subsidiary [member]
Disclosure of information about consolidated structured entities [line items]
Total revenues	190,924,413		170,991,493	173,714,225
Total cost and operating expenses	183,542,058		163,152,868	160,949,691
Operating income	7,382,355		7,838,625	12,764,534
Interest (expense) income, net	(11,033,069)		(12,365,116)	97,314
Foreign currency exchange (loss) gain, net	626,304		1,320,667	(5,853,669)
Other financing cost, net				(11,203,533)
Income tax	798,639		1,386,519	1,139,631
Equity interest in net income of associated companies	1,325,723		(8,977,146)	(1,342,073)
Net profit (loss)	(2,497,326)		(13,569,489)	(6,677,058)
Distribution of the net profit (loss) to:
Equity owners of holding company	(2,497,326)		(13,569,489)	(6,677,058)
Net profit (loss)	(2,497,326)		(13,569,489)	(6,677,058)
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities	(724,521)		(1,897,936)	755,978
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect	(1,603,145)		(8,439)	(12,300)
Total other comprehensive income (loss) items for the year, net of deferred taxes	(2,327,666)		(1,906,375)	743,678
Total comprehensive income (loss) for the year	(4,824,992)		(15,475,864)	(5,933,380)
Comprehensive income for the period attributable to:
Equity holders of the parent	(4,824,992)		(15,475,864)	(5,933,380)
Total comprehensive income (loss) for the year	(4,824,992)		(15,475,864)	(5,933,380)
Combined non-guarantor subsidiaries [member]
Disclosure of information about consolidated structured entities [line items]
Total revenues	890,427,121		887,951,615	857,137,822
Total cost and operating expenses	799,085,884		832,429,198	778,483,079
Operating income	91,341,237		55,522,417	78,654,743
Interest (expense) income, net	14,757,906		1,810,523	(17,207,855)
Foreign currency exchange (loss) gain, net	(19,693,543)		83,493	12,051,654
Other financing cost, net	(5,732,424)		(8,719,215)	5,453,365
Income tax	27,924,430		9,353,593	17,971,404
Equity interest in net income of associated companies	(2,497,059)		(13,466,845)	(6,677,059)
Net profit (loss)	50,251,687		25,876,780	54,303,444
Distribution of the net profit (loss) to:
Equity owners of holding company	46,641,696		21,417,549	50,049,280
Non-controlling interest	3,609,991		4,459,231	4,254,164
Net profit (loss)	50,251,687		25,876,780	54,303,444
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities	(64,314,032)		(18,309,877)	108,291,984
Effect of fair value of derivatives, net of deferred taxes			12,292	30,206
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect	757,278		(7,046,089)	7,477,926
Equity investments at fair value	(3,765,688)		622,424	(6,673,731)
Total other comprehensive income (loss) items for the year, net of deferred taxes	(67,322,442)		(24,721,250)	109,126,385
Total comprehensive income (loss) for the year	(17,070,755)		1,155,530	163,429,829
Comprehensive income for the period attributable to:
Equity holders of the parent	(16,035,363)		(5,076,855)	150,900,984
Non-controlling interests	(1,035,392)		6,232,385	12,528,845
Total comprehensive income (loss) for the year	(17,070,755)		1,155,530	163,429,829
Eliminations [member]
Disclosure of information about consolidated structured entities [line items]
Total revenues	(214,030,998)		(197,367,084)	(192,675,860)
Total cost and operating expenses	(213,017,181)		(197,640,175)	(191,466,226)
Operating income	(1,013,817)		273,091	(1,209,634)
Interest (expense) income, net	(18,563)		(41,305)	(227,781)
Equity interest in net income of associated companies	(44,929,585)		(9,709,665)	(42,759,659)
Net profit (loss)	(45,961,965)		(9,477,879)	(44,197,074)
Distribution of the net profit (loss) to:
Equity owners of holding company	(44,302,600)		(7,848,060)	(43,372,222)
Non-controlling interest	(1,659,365)		(1,629,819)	(824,852)
Net profit (loss)	(45,961,965)		(9,477,879)	(44,197,074)
Net other comprehensive income (loss) to be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities	61,947,979		23,581,269	(105,728,134)
Effect of fair value of derivatives, net of deferred taxes			(12,292)	(29,573)
Items not to be reclassified to profit or loss in subsequent years:
Remeasurement of defined benefit plan, net of income tax effect	950,423		7,084,045	(7,463,997)
Equity investments at fair value	3,765,688		(622,424)	6,673,731
Total other comprehensive income (loss) items for the year, net of deferred taxes	66,664,090		30,030,598	(106,547,973)
Total comprehensive income (loss) for the year	20,702,125		20,552,719	(150,745,047)
Comprehensive income for the period attributable to:
Equity holders of the parent	20,702,125		20,552,719	(144,967,604)
Non-controlling interests				(5,777,443)
Total comprehensive income (loss) for the year	$ 20,702,125		$ 20,552,719	$ (150,745,047)

XML

Supplemental Guarantor Information - Condensed Consolidating Statements of Cash Flows (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)
Operating activities:
Profit before taxes	$ 100,993,902	$ 5,131	$ 57,096,844	$ 23,477,595
Non-cash items	187,192,818		195,680,543	228,623,927
Changes in working capital:	(39,856,192)		(35,005,012)	(16,303,468)
Net cash flows provided by operating activities	248,330,528	12,617	217,772,375	235,798,054
Investing activities:
Purchase of property, plant and equipment	(143,888,033)	(7,310)	(119,185,137)	(138,707,157)
Acquisition of intangibles	(7,933,647)	(403)	(17,538,541)	(16,316,738)
Dividends received from associates	2,622,237		2,385,559	5,740,092
Proceeds from sale of plant, property and equipment	178,532	9	133,349	115,600
Acquisition of business, net of cash acquired	(310,604)	(16)	(6,878,793)	(1,823,813)
Partial sale of shares of associate company	548,484	28	340,040
Investment in associates companies				(3,487)
Net cash flows provided by (used in) investing activities	(148,783,031)	(7,559)	(140,743,523)	(150,995,503)
Financing activities:
Bank loans, net	(34,050,923)		(27,433,489)	(61,390,813)
Acquisition of no controlling interest	(115,821)	(6)	(11,930)	(2,280,278)
Interest paid	(30,869,017)	(1,568)	(31,196,441)	(32,125,872)
Sale of shares of subsidiaries				6,323,336
Repurchase of shares and others	(511,421)	(26)	(1,233,371)	(7,021,247)
Payment of dividends	(22,369,793)	(1,137)	(16,091,390)	(13,809,957)
Derivative financial instruments			(71,474)	(351,213)
Redemption of hybrid bond	(13,440,120)	(683)
Net cash flows used in financing activities	(101,357,095)	(5,150)	(76,038,095)	(110,656,044)
Net (decrease) increase in cash and cash equivalents	(1,809,598)	(92)	990,757	(25,853,493)
Adjustment to cash flow for exchange rate differences	(800,913)	(41)	61,333	3,911,844
Cash and cash equivalents at beginning of the period	24,270,473	1,233	23,218,383	45,160,032
Cash and cash equivalents at end of the period	21,659,962	$ 1,100	24,270,473	23,218,383
Parent [member]
Operating activities:
Profit before taxes	70,478,437		43,527,320	937,247
Non-cash items	(23,099,316)		(17,017,287)	(997,587)
Changes in working capital:	(49,040,542)		(18,973,478)	74,520,320
Net cash flows provided by operating activities	(1,661,421)		7,536,555	74,459,980
Investing activities:
Purchase of property, plant and equipment	(17,709)		16,526
Dividends received from associates	24,314,803		21,465,687	21,950
Proceeds from sale of plant, property and equipment				20,078
Partial sale of shares of associate company				756,444
Net cash flows provided by (used in) investing activities	24,297,094		21,482,213	798,472
Financing activities:
Bank loans, net	24,784,341		13,548,138	(39,598,698)
Interest paid	(24,802,363)		(24,009,216)	(24,826,139)
Repurchase of shares and others	(514,007)		(1,240,028)	(7,092,385)
Payment of dividends	(20,787,102)		(14,406,748)	(13,437,168)
Net cash flows used in financing activities	(21,319,131)		(26,107,854)	(84,954,390)
Net (decrease) increase in cash and cash equivalents	1,316,542		2,910,914	(9,695,938)
Cash and cash equivalents at beginning of the period	7,018,559		4,107,645	13,803,584
Cash and cash equivalents at end of the period	8,335,101		7,018,559	4,107,645
Wholly-owned guarantor subsidiary [member]
Operating activities:
Profit before taxes	(1,698,687)		(12,182,970)	(5,537,427)
Non-cash items	20,952,414		30,000,109	19,800,396
Changes in working capital:	(35,329,228)		(9,486)	9,130,768
Net cash flows provided by operating activities	(16,075,501)		17,807,653	23,393,737
Investing activities:
Purchase of property, plant and equipment	(4,031,228)		(5,571,410)	(7,860,232)
Acquisition of intangibles	(2,993,373)		(3,053,345)	(4,947,506)
Dividends received from associates			970,000
Acquisition of business, net of cash acquired			(3,381,505)	(2,796,254)
Investment in associates companies	(5,092,881)		1,925,898	663,203
Net cash flows provided by (used in) investing activities	(12,117,482)		(9,110,362)	(14,940,789)
Financing activities:
Interest paid	26,385,526		(7,092,098)	(7,972,827)
Net cash flows used in financing activities	26,385,526		(7,092,098)	(7,972,827)
Net (decrease) increase in cash and cash equivalents	(1,807,457)		1,605,193	480,121
Cash and cash equivalents at beginning of the period	3,553,352		1,948,159	1,468,036
Cash and cash equivalents at end of the period	1,745,895		3,553,352	1,948,159
Combined non-guarantor subsidiaries [member]
Operating activities:
Profit before taxes	78,176,117		35,230,373	28,077,775
Non-cash items	149,503,016		171,062,158	209,821,118
Changes in working capital:	(61,332,380)		(66,062,629)	(93,359,195)
Net cash flows provided by operating activities	166,346,753		140,229,902	144,539,698
Investing activities:
Purchase of property, plant and equipment	(139,839,096)		(113,630,253)	(130,846,925)
Acquisition of intangibles	(4,940,274)		(14,485,196)	(11,369,232)
Dividends received from associates	2,622,237		2,385,559	5,988,938
Proceeds from sale of plant, property and equipment	178,532		133,349	95,522
Acquisition of business, net of cash acquired	(310,604)		(3,497,288)	(1,823,813)
Partial sale of shares of associate company	548,484		340,040	2,796,254
Investment in associates companies				(666,690)
Net cash flows provided by (used in) investing activities	(141,740,721)		(128,753,789)	(135,825,946)
Financing activities:
Bank loans, net	19,592,788		16,382,838	(21,792,115)
Acquisition of no controlling interest	(115,821)		(11,930)	(2,280,278)
Interest paid	(6,066,654)		(7,187,225)	(5,922,267)
Paid-In capital				(756,444)
Sale of shares of subsidiaries				6,323,336
Repurchase of shares and others	2,586		6,657	71,138
Payment of dividends	(25,897,494)		(24,120,329)	(643,585)
Derivative financial instruments			(71,474)	(351,213)
Redemption of hybrid bond	(13,440,120)
Net cash flows used in financing activities	(25,924,715)		(15,001,463)	(25,351,428)
Net (decrease) increase in cash and cash equivalents	(1,318,683)		(3,525,350)	(16,637,676)
Adjustment to cash flow for exchange rate differences	(800,913)		61,333	3,911,844
Cash and cash equivalents at beginning of the period	13,698,562		17,162,579	29,888,412
Cash and cash equivalents at end of the period	11,578,966		13,698,562	17,162,579
Eliminations [member]
Operating activities:
Profit before taxes	(45,961,965)		(9,477,879)
Non-cash items	39,836,704		11,635,563
Changes in working capital:	105,845,958		50,040,581	(6,595,361)
Net cash flows provided by operating activities	99,720,697		52,198,265	(6,595,361)
Investing activities:
Dividends received from associates	(24,314,803)		(22,435,687)	(270,796)
Acquisition of business, net of cash acquired				2,796,254
Partial sale of shares of associate company				(3,552,698)
Investment in associates companies	5,092,881		(1,925,898)
Net cash flows provided by (used in) investing activities	(19,221,922)		(24,361,585)	(1,027,240)
Financing activities:
Bank loans, net	(78,428,052)		(57,364,465)
Interest paid	(26,385,526)		7,092,098	6,595,361
Paid-In capital				756,444
Payment of dividends	24,314,803		22,435,687	270,796
Net cash flows used in financing activities	$ (80,498,775)		$ (27,836,680)	$ 7,622,601