Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q Commission File Number: 1-33409 T-MOBILE US, INC. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) Delaware 20-0836269 12920 SE 38th Street Bellevue, Washington (Address of principal executive offices) 98006-1350 (Zip Code) (425) 378-4000 (Registrant's telephone number, including area code) Securities reg ...