WASHINGTON, July 5, 2026, 09:04 EDT
- T-Mobile US NASDAQ:TMUS has FCC approval for $2.9 billion and 10 MHz of 600 MHz spectrum reaching about 15% of the U.S. population. Grain picks up 800 MHz licenses that cover close to 100%.
- Grain is required to begin a fair satellite partner process by Aug. 7, wrap it up by Nov. 5, and get full satellite applications in by Dec. 4 to use the FCC direct-to-device buildout path.
- AST SpaceMobile NASDAQ:ASTS is in the mix as a potential bidder, but hasn’t been picked as a partner. The FCC said it won’t decide on satellite waivers until Grain picks a partner and puts in applications.
The FCC signed off on T-Mobile US’s NASDAQ:TMUS spectrum swap with Grain Management. For investors in AST SpaceMobile NASDAQ:ASTS, that puts pressure on the company to turn its 800 MHz spectrum story into an actual commercial deal before the end of the year—or else the window gets tighter on the ground.
The FCC signed off on the deal July 1. T-Mobile is set to hand over its 800 MHz licenses to Grain in return for $2.9 billion in cash and Grain’s 600 MHz licenses. The commission said the 600 MHz swap should boost T-Mobile’s capacity, speed and reliability. The agency said its spectrum screens weren’t tripped.
| Asset | Holder after deal | Band | Scale | Investor read |
|---|---|---|---|---|
| 800 MHz licenses | Grain | 4.85 MHz to 14 MHz | 3,224 counties; covers all or part of 730 CMAs; nearly all of the U.S. population | National low-band play for satellite, utilities, wireless or enterprise buyers |
| 600 MHz licenses | T-Mobile | 10 MHz | 212 counties; covers all or part of 84 CMAs; hits about 15% of U.S. population | T-Mobile can quickly launch more coverage on this spectrum since it was already leasing it |
| Cash | T-Mobile | $2.9 billion | Grain paid cash | Lets T-Mobile cash out spectrum from the Sprint merger that it couldn’t hold |
“T-Mobile comes out on top here. The swap gets rid of spectrum they can’t really use and gives them back spectrum they need,” Roger Entner, analyst at Recon Analytics, told Light Reading. “Very well played.” Light Reading
T-Mobile said the deal would let it cash out the 800 MHz spectrum and bring Grain’s 600 MHz licenses onto its own network. “This deal also gives us a great opportunity to deploy Grain’s 600 MHz portfolio of spectrum on T-Mobile’s network, which is already creating better customer experiences in several markets,” Dirk Mosa, T-Mobile’s senior vice president for spectrum, partnerships and acquisitions, said when the companies announced the transaction in 2025. T-Mobile
For ASTS, this looks more like a catalyst calendar than a win. The FCC referenced AST SpaceMobile filings when talking about direct-to-device service, and said at least one D2D operator could meet or exceed the satellite buildout numbers. Grain still has to run a neutral process. The order doesn’t give spectrum to ASTS.
| FCC deadline | Requirement | Why investors care |
|---|---|---|
| Aug. 7, 2026 | Grain has to pick a neutral adviser and kick off the fair process to choose a satellite partner | This is when investors get the first read on whether ASTS, SpaceX, or someone else actually nails down the band |
| Nov. 5, 2026 | Grain wraps up the process and sends results to the FCC | Pushes the choice on a partner right into the spotlight |
| Dec. 4, 2026 | Grain files all secondary satellite applications, if it goes with a D2D partner | This is what lets them go down the satellite path for benchmarks |
| Nov. 30, 2029 | First D2D milestone hits | Need 5 dB SINR, service up 70% of the time in 90% of each area, plus throughput and efficiency checked |
| Nov. 30, 2036 | Final D2D milestone arrives | Hit 10 dB SINR and service up 90% of the time, still in 90% of each area |
The FCC gave tougher buildout terms to Grain. The company wanted six years to hit its interim target and 12 years to finish construction. The FCC instead gave three years for the interim goal and eight years for the final mark, using license-by-license checks for terrestrial use. If Grain misses the interim, the final deadline can move up. Missing the final mark can cost the license.
The satellite path includes strict performance tests. The FCC requires D2D signal quality, service up time, uplink throughput and spectrum efficiency milestones. At the last milestone in 2036, the service has to meet 10 dB SINR and be on 90% of the time for 90% of each licensed area.
The asset is in focus as U.S. mobile data use climbs. CTIA reported Americans hit a new peak with 132 trillion megabytes in 2024, up from 100 trillion the year before. Wireless carriers spent $29 billion on networks that year.
ASTS was last at $85.13 ahead of the U.S. holiday, putting its market cap near $24.7 billion. T-Mobile ended at $177.52, valuing the company around $195.6 billion. U.S. equity markets closed July 3 for the Independence Day holiday at the New York Stock Exchange.
ASTS climbed up to 1% in overnight action after the FCC decision, according to Stocktwits via Yahoo Finance, but then gave up those gains. Shares had jumped 20% earlier this week. On Wednesday, ASTS fell 3%, snapping a three-day winning streak.
The FCC said Grain can shop the 800 MHz licenses to D2D groups, utilities, carriers, and enterprise buyers. But waivers for supplemental coverage from space are still on hold, waiting on Grain to name a satellite partner and file full paperwork. If Grain or a future holder misses final buildout, the license ends and that company can’t reapply.
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