T-Mobile US, Inc. TMUS

What this company does

T-Mobile provides wireless communications and broadband services and sells wireless devices, including smartphones, wearables, tablets, 5G broadband gateways and other mobile communication devices manufactured by various suppliers. As of December 31, 2025, it served 142.4 million postpaid and prepaid customers. The company employed approximately 75,000 full-time and part-time employees as of the same date, spanning network, retail, administrative and customer support functions. Services, devices and accessories are provided under the T-Mobile, Metro by T-Mobile and Mint Mobile brands, through owned and operated retail stores, websites, apps, customer care channels and national retailers. It also provides wholesale wireless services to various partners, which then offer the services for sale to their customers. Complementary broadband offerings include 5G broadband, a fixed wireless product that utilizes the excess capacity of the nationwide 5G network, and fiber. Substantially all of its revenues for the years ended December 31, 2025, 2024 and 2023 were earned in the United States, including Puerto Rico and the U.S. Virgin Islands. Headquarters are located in Bellevue, Washington, and Overland Park, Kansas.

Written from the business description in T-Mobile US, Inc.'s annual report to the U.S. Securities and Exchange Commission, filed 11 February 2026. Every sentence was checked against that document before publication.