X0306 4 2018-08-06 0 0001283699 T-Mobile US, Inc. TMUS 0001392403 Keys Thomas Christopher C/O T-MOBILE US, INC. 12920 SE 38TH STREET BELLEVUE WA 98006 0 1 0 0 Pres. MetroPCS Common Stock 2018-08-06 4 S 0 25000 65.40 D 381883 D Common Stock 2018-08-07 4 S 0 40000 65.775 D 341883 D The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 20, 2017. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.75 to $65.80. The reporting person undertakes to provide T-Mobile US, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Exhibit 24 - Power of Attorney. /s/ Broady Hodder, Attorney-in-Fact 2018-08-08