BELLEVUE, Wash.--(BUSINESS WIRE)--J. Braxton Carter, Executive Vice President and Chief Financial Officer of T-Mobile US, Inc. (NYSE: TMUS), will speak at 10:00 a.m. Eastern Standard Time on Wednesday, December 10th at the 42nd Annual UBS Global Media and Communications Conference in New York, NY. A live webcast of the event will be available on the Company’s Investor Relations website, http://investor.t-mobile.com, on Wednesday, December 10, 2014 at 10:00 a.m. EST. An on-demand replay will be