BELLEVUE, Wash.--(BUSINESS WIRE)--Braxton Carter, Chief Financial Officer of T-Mobile US, Inc. (NYSE: TMUS), will speak at 9:20 a.m. Eastern Daylight Time on Monday, May 18th at the J.P. Morgan Technology, Media and Telecom Conference in Boston, MA. A live webcast of the event will be available on the Company’s Investor Relations website, http://investor.t-mobile.com, on Monday, May 18, 2015 at 9:20 a.m. EDT. An on-demand replay will be available shortly after the conclusion of the presentation