T-Mobile is a telecommunications company that provides wireless voice, messaging, and data services in the United States. The company has been through several ownership changes over the years.

As of 2021, T-Mobile is owned by Deutsche Telekom, a German telecommunications company. Deutsche Telekom has owned a majority stake in T-Mobile since 2001, and in 2020, it completed a merger with Sprint, which further increased its ownership of the company.
Deutsche Telekom is a large multinational telecommunications company with operations in Europe, the United States, and other parts of the world. It is headquartered in Bonn, Germany, and has more than 230,000 employees worldwide.
T-Mobile is one of the largest wireless carriers in the United States, with more than 100 million customers. The company has been known for its disruptive marketing campaigns and aggressive pricing strategies, which have helped it gain market share in recent years. In addition to traditional wireless services, T-Mobile also offers home internet and TV services.
Overall, T-Mobile’s ownership by Deutsche Telekom has helped it become a major player in the US telecommunications industry. With the ongoing rollout of 5G networks and other new technologies, T-Mobile is likely to continue to play a prominent role in the industry for years to come.