Finance
Deutsche Telekom's Quarter-Century Relationship With T-Mobile US
Published by Global Banking & Finance Review®
Posted on April 22, 2026
3 min readLast updated: April 22, 2026
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Deutsche Telekom is exploring a merger with T-Mobile US, marking 25 years of strategic evolution from its acquisition of VoiceStream in 2001 to becoming majority owner. The U.S. unit transformed into a telecom powerhouse and is now central to DT’s global ambitions.
Deutsche Telekom and T-Mobile US: 25 Years of Strategic Milestones
Key Events in the Deutsche Telekom and T-Mobile US Partnership
April 22 (Reuters) - Deutsche Telekom is exploring a deal to combine with its U.S. unit, T-Mobile US, according to sources, in what would be a record-breaking public merger.
The deal would crown a quarter century of maneuvering that transformed an American upstart into a $218 billion juggernaut and made the U.S. business the crown jewel of its German parent.
Here are milestones in the relationship between Deutsche Telekom and T-Mobile:
Early Foundations and Acquisitions
1999: VoiceStream Wireless Spin-Off
1999 - Western Wireless spins off its VoiceStream Wireless unit into the VoiceStream Wireless Corporation.
2000-2001: Deutsche Telekom Enters the U.S. Market
2000 - Deutsche Telekom agrees to acquire VoiceStream Wireless and U.S. GSM operator Powertel. The deal is valued at approximately $50.7 billion at the time of the announcement.
2001 - Deutsche Telekom completes its acquisitions of VoiceStream and Powertel, forming what it calls the world's first transatlantic wireless communications operator using the GSM standard. VoiceStream becomes part of T-Mobile International, Deutsche Telekom's mobile subsidiary.
2002: T-Mobile Brand Launch in the U.S.
2002 - VoiceStream, rebranded as T-Mobile USA, begins rolling out the T-Mobile brand in major western U.S. cities, including Las Vegas, Los Angeles and San Francisco.
Strategic Setbacks and Growth
2011: Failed AT&T Acquisition
2011 - AT&T announces plans to purchase T-Mobile US for $39 billion, but the deal collapses after the intervention by U.S. antitrust regulators. Deutsche Telekom receives $4 billion in breakup compensation.
2013: Merger with MetroPCS
2013 - T-Mobile USA merges with MetroPCS. The combined company begins trading under the name T-Mobile US and the ticker symbol TMUS on the New York Stock Exchange on May 1.
2020: Sprint Merger
2020 - T-Mobile US completes an all-stock merger with Sprint valued at $26 billion. Deutsche Telekom's stake in T-Mobile US shrinks to 43%, while Sprint's owner, Japan's SoftBank, takes a 24% stake.
Recent Developments and Future Prospects
2021: Divestment and Share Buyback
2021 - Deutsche Telekom sells T-Mobile Netherlands for 5.1 billion euros, or $6 billion in today's exchange rate, and uses some of the proceeds to buy back T-Mobile US shares.
2022: Increasing Stake in T-Mobile US
2022 - Deutsche Telekom acquires 21.2 million T-Mobile US shares from SoftBank for $2.4 billion, increasing its stake to 48.4%.
2023: Achieving Majority Stake
2023 - Deutsche Telekom surpasses a 50% stake in T-Mobile US. During a Deutsche Telekom general meeting, CEO Tim Hoettges says that the company had been pursuing a majority stake since 2021.
2026: Exploring a Landmark Merger
2026 - Deutsche Telekom is exploring a deal to combine with T-Mobile US to create a $400 billion telecoms giant in what would be the largest-ever public merger, two people familiar with the matter say.
Exchange Rate Reference
($1 = 0.8515 euros)
(Reporting by Leo Marchandon in Gdansk, editing by Thomas Seythal)
Key Takeaways
- •DT’s 2001 acquisition of VoiceStream and Powertel laid the foundation for T-Mobile US, rebranded in 2002 and forming the basis of a transatlantic telecom expansion.(en.wikipedia.org)
- •Major consolidation milestones include the failed AT&T bid in 2011 (compensated with $4 billion), the 2013 MetroPCS reverse takeover, and the 2020 Sprint merger, which propelled T‑Mobile US to industry leadership.(en.wikipedia.org)
- •DT steadily increased its ownership: majority control achieved in 2023 (over 50 %), rising to about 53.7 % by early 2026, solidifying T-Mobile US as its crown‑jewel asset.(telekom.com)
- •The proposed merger, via a new holding structure, would create a $400 billion-plus telecom champion and mark the largest-ever public-to-public merger, contingent on political approval.(elpais.com)
References
Frequently Asked Questions about Deutsche Telekom's quarter-century relationship with T-Mobile US
1When did Deutsche Telekom acquire VoiceStream Wireless?
Deutsche Telekom agreed to acquire VoiceStream Wireless in 2000 and completed the acquisition in 2001.
2How did T-Mobile US become Deutsche Telekom’s key asset?
T-Mobile US grew through multiple mergers and strategic investments, becoming Deutsche Telekom’s crown jewel by 2023 with a majority stake.
3What major mergers has T-Mobile US been involved in?
T-Mobile US merged with MetroPCS in 2013 and completed a $26 billion merger with Sprint in 2020.
4What is the significance of the potential Deutsche Telekom and T-Mobile US merger?
If completed, the deal could create a $400 billion telecoms giant, marking the largest-ever public merger.
5Why did the AT&T purchase of T-Mobile US fail?
The 2011 AT&T deal collapsed after intervention by U.S. antitrust regulators.