Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2020	Jul. 24, 2020
Document And Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2020
Entity File Number	001-36471
Entity Registrant Name	MobileIron, Inc.
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	490 East Middlefield Road
Entity Address, City or Town	Mountain View
Entity Address, State or Province	CA
Entity Tax Identification Number	26-0866846
Entity Address, Postal Zip Code	94043
City Area Code	650
Local Phone Number	919-8100
Title of 12(b) Security	Common Stock, par value $.0001 per share
Trading Symbol	MOBL
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		116,883,504
Entity Central Index Key	0001470099
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false
Trading Symbol	MOBL