History
Deutsche Telekom:
Deutsche Bundespost, the German federal post office, in 1990 split into three standalone public sector enterprises: Postdienst, Postbank and Deutsche Bundespost Telekom.
Deutsche Bundespost Telekom in 1995 became Deutsche Telekom AG, a stock corporation, as Germany privatized the formerly government-owned phone company.
See more: Deutsche Telecom history
T-Mobile US:
T-Mobile US’s principal business, T-Mobile USA, was formed in 1994 as VoiceStream Wireless PCS, a subsidiary of Western Wireless Corp.
VoiceStream was spun off from Western Wireless in May 1999, acquired by Deutsche Telekom in May 2001 and renamed T-Mobile USA in July 2002.
MetroPCS was established in 1996 as General Wireless. The company changed its name to MetroPCS Communications in 1998. MetroPCS Communications changed its name to T-Mobile US as part of the merger with T-Mobile USA in 2013. T-Mobile in October 2018 changed the name of MetroPCS to Metro by T-Mobile.
T-Mobile US bought Sprint Corp. in 2020 and Mint Mobile in 2024.
See more: T-Mobile US history