| Year | Detail |
| 1999 |
After its spinoff 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. |
| 2002 |
American Airlines, Delta Air Lines, and United Airlines partnered with T‑Mobile to provide ‘Wi-Fi’ (802.11b) wireless broadband Internet access in each airline's clubs and lounges nationwide. |
| 2004 |
Comcast Cable and T-Mobile USA Inc. collaborated to offer the T-Mobile HotSpot Wi-Fi Internet service to Comcast’s nearly five million high-speed Internet customers. |
| 2008 |
The company acquired SunCom Wireless for approximately $2.4 billion in cash and assumed debt to expand its network and industry-leading customer service to the Southeastern United States, Puerto Rico, and the U.S. Virgin Islands. |
| 2010 |
The company collaborated with Samsung Telecommunications America, a mobile phone provider in the U.S., to launch the first mobile tablet in T-Mobile’s Android portfolio, the Samsung Galaxy Tab. It featured a seven-inch touchscreen, a speedy processor, and the Android 2.2 operating system. |
| 2010 |
T-Mobile expanded its G mobile broadband network to eight additional metro areas of the U.S., including Detroit, Grand Junction, Harlingen, Lafayette and South Bend, Montgomery, Roanoke-Lynchburg, and Youngstown. |
| 2021 |
The company partnered with Zyter to bring virtual healthcare solutions, including telehealth, remote patient monitoring, and care team collaboration, to more healthcare organizations and their patients, providing access to virtual care for underserved communities. |
| 2022 |
T‑Mobile and Crown Castle expanded their partnership to support the continued build-out of T-Mobile's nationwide 5G network with increased access to Crown Castle's towers and small cell locations. |
| 2022 |
The company acquired Octopus Interactive, a prominent national network of interactive video screens inside Uber and Lyft vehicles, to execute comprehensive geotargeted campaigns across a range of highly engaged consumers. |
| 2022 |
In collaboration with T-Mobile, Deutsche Telekom launched T-IoT, a disruptive new IoT solution designed to simplify global IoT connectivity for enterprises. |
| 2022 |
The company partnered with Nokia to build flexible and scalable 5G Networks, which will help provide enterprise and government customers with superfast speeds, lower latency, and control over their connectivity, with options at the edge. |
| 2022 |
The company launched a secure Wi-Fi app for business customers. This set-and-forget app automatically protects customers' data and enhances their smartphone experience anywhere in the world when connected to public Wi-Fi. |
| 2023 |
The company acquired Ka’ena Corporation and its subsidiaries and brands: Mint Mobile, a successful direct-to-consumer (D2C) prepaid wireless brand in the U.S.; Ultra Mobile, a unique wireless service offering international calling options to communities across the country; and wholesaler Plum for company's expansion. |
| 2023 |
T-Mobile and Google Cloud are joined by 5G Advanced Network Solutions (ANS) and Google Distributed Cloud Edge to give businesses the power to explore innovative, connected experiences. |
| 2023 |
The company ventured with EQT, a purpose-driven global investment organization, to acquire Lumos' fiber platform and deliver broadband services to more domestic customers. |
| 2024 |
The company acquired Uscellular's wireless operations to provide millions of UScellular customers, particularly those in underserved rural areas, a good connectivity experience, moving from a roaming experience outside of the cellular coverage area to full nationwide access on the country’s largest and fastest 5G network. |
| 2024 |
The company ventured with OpenAI to custom-build the first intent-driven AI-decisioning platform of its kind, IntentCX. This platform will be able to apply meaningful understanding and knowledge of the customer to every interaction, offer solutions to resolve issues, and even take proactive actions on their behalf. |