a regional network operator in the Columbus, Houston, Kansas City, Minneapolis-St. Omnipoint Corporation, a regional network operator in the Northeastern U.S., was acquired on February 25, 2000. In 2000, VoiceStream Wireless acquired two regional GSM carriers. Western Wireless spun off its VoiceStream Wireless division into a new company called VoiceStream Wireless Corporation in May 1999. VoiceStream Wireless' digital, urban service areas complemented the analog, rural service areas marketed by Western Wireless under the Cellular One brand. VoiceStream Wireless PCS was established in 1994 as a subsidiary of Western Wireless Corporation to provide wireless personal communications services (PCS) in 19 FCC-defined metropolitan service areas in several western and southwestern states using the GSM digital wireless standard. In 2013, T-Mobile and MetroPCS finalised a merger of the two companies which started trading as T-Mobile U.S. After its spin off from parent Western Wireless on May 3, 1999, VoiceStream Wireless was purchased by Deutsche Telekom AG in 2001 for $35 billion and renamed T-Mobile USA, Inc., in July 2002. traces its roots to the 1994 establishment of VoiceStream Wireless PCS as a subsidiary of Western Wireless Corporation. As part of the merger, T-Mobile US acquired Assurance Wireless, the service subsidized by the Lifeline Assistance program of the federal Universal Service Fund. On April 1, 2020, T-Mobile and Sprint Corporation completed their merger, with T-Mobile now being the sole owner of Sprint, making Sprint an effective subsidiary of T-Mobile until the Sprint brand was officially erased on August 2, 2020. In 2015, Consumer Reports named T-Mobile the number one American wireless carrier. The company has annual revenues of around $80 billion. T-Mobile US provides wireless voice and data services in the United States under the T-Mobile and Metro by T-Mobile brands (the latter was acquired via the purchase of MetroPCS in a reverse takeover in 2013, resulting in T-Mobile going public on the NASDAQ stock exchange), and also serves as the host network for many mobile virtual network operators. Deutsche Telekom then gained plurality ownership in 2001 and renamed it after its T-Mobile brand. Stanton of the Western Wireless Corporation as VoiceStream Wireless.

The company was founded in 1994 by John W. T-Mobile US is the second-largest wireless carrier in the United States, with more than 110 million subscribers as of the end of Q2 2022. Its largest shareholder is multinational telecommunications company Deutsche Telekom AG, which as of April 2023, holds a 53.3% majority stake in the company. is an American wireless network operator headquartered in Overland Park, Kansas and Bellevue, Washington, U.S.

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