T-Mobile US, Inc., established in 1994, is a leading wireless services provider in the United States. With its headquarters in Bellevue, Washington, T-Mobile employs more than 50,000 people as of 2023.

T-Mobile offers a broad spectrum of wireless communication services to over 100 million customers, making it one of the largest wireless carriers in the U.S. It offers data, wireless voice, messaging, and high-speed internet services to customers in the postpaid, prepaid, and wholesale markets. In 2022, T-Mobile reported revenues of $68.4 billion, showing solid growth and performance in the market.