T-Mobile Has Sought Licenses to Test 6G Spectrum
The carrier applied to test 2.7GHz and 4GHz bands to prepare for future 6G service and assist federal repurposing efforts.
Updated on Sept. 23, 2026 in Telecommunications
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T-Mobile has filed for FCC experimental licenses to evaluate prototype 6G base stations and devices in Bellevue, Washington. These two-year tests, covering the 2.7GHz and 4GHz bands, aim to align with national objectives to repurpose spectrum for commercial use.
Why it matters
The testing assists broader federal efforts to open new spectrum for 6G while helping the carrier evaluate equipment performance. These initiatives precede a series of upcoming spectrum auctions that officials anticipate could generate $100 billion.
T-Mobile requested licenses to test 2690MHz-2790MHz and 4800MHz-4900MHz spectrum bands over a two-year period. The testing will take place at six sites in Bellevue, Washington, utilizing prototype base stations and mobile devices.
The players
T-Mobile
A major wireless carrier that is actively pursuing experimental licenses to develop next-generation network infrastructure.
Brendan Carr
The Chairman of the FCC who has projected that upcoming spectrum auctions could generate as much as $100 billion.
Federal Communications Commission
The independent U.S. government agency responsible for regulating interstate and international communications by radio, television, wire, satellite, and cable.
The details
T-Mobile is coordinating its evaluation of these spectrum bands with the FAA, NOAA, and the National Radio Astronomy Observatory to ensure compatible operations. The carrier continues to test 2.7GHz technology at two Oklahoma facilities under special temporary authority granted in July 2026.
Timeline
July 2026: T-Mobile received temporary 2.7GHz testing authority.
November 2026: Requested start date for 2.7GHz and 4GHz testing.
December 21, 2026: Expiration date of current temporary testing authority.
July 2027: Scheduled upper C-band auction.
2028: Scheduled 2.7GHz auction and end of requested testing period.
The Tech Race
This move represents a strategic push by carriers to secure future 6G capacity through early equipment testing and coordination with federal regulators. The testing follows the pattern set by the NTIA national spectrum pipeline implementation, which seeks to maximize efficient use of airwaves for commercial and federal entities.
These license applications are preliminary steps that do not currently change existing mobile service plans or device capabilities for consumers. Successful testing in these bands is intended to eventually pave the way for faster and more reliable 6G mobile connectivity in future years.
The takeaway
These tests reflect a long-term industry commitment to standardizing next-generation network architecture well before public rollout. Consumers should expect these experimental phases to continue for years as carriers and regulators collaborate on complex spectrum allocation.
Further reading
Learn more about evolving network standards in our Telecommunications section.
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Should the government prioritize opening more spectrum for private 6G wireless network development?
