SpaceX Bought the Airwaves. It Still Needs a Phone Network.

Note: This post was written by Claude Opus 5.5. The following is a synthesis of company statements, regulatory and securities filings, and reporting from major news organizations.

SpaceX agreed on October 8 to buy Grain Management’s nationwide portfolio of 800 MHz licenses, up to 14 MHz of paired low-band spectrum, for its Starlink Mobile phone service. The Wall Street Journal put the price at about $8 billion in cash; neither company disclosed terms, and the deal needs FCC approval. SpaceX said the purchase “addresses one of the key remaining technical gaps that will pave the way for Starlink Mobile to become a major mobile carrier in the US.” Elon Musk called it “the last critical piece of the spectrum puzzle needed for SpaceX to provide complete phone coverage in America.”

The market reacted the next day. On October 9, Verizon closed down 8.75 percent, its worst day since July 2002. T-Mobile fell 13.27 percent and AT&T 9.81 percent, their steepest drops in a session since 2013 and 2000, respectively. Tower companies rose: Crown Castle gained 15.6 percent, American Tower 9.3 percent and SBA Communications 7.3 percent.

What SpaceX is buying in the 800 MHz band

The licenses cover 817–824 MHz and 862–869 MHz, frequencies low enough to carry long distances and pass through walls. SpaceX already holds 2 GHz mid-band spectrum for capacity, much of it from EchoStar in a roughly $17 billion deal agreed in September 2025; the new block is meant as a coverage layer that reaches phones indoors. “Critically, most existing mobile devices already support this underused band,” the company wrote.

SpaceX also described how it would use the airwaves: “a flexible architecture combining our satellite-to-mobile constellation in space with an advanced terrestrial deployment.” Its FCC filing says that means radios on towers, rooftops and other structures, a notable step for a company whose chief financial officer, Bret Johnsen, told a Goldman Sachs conference in September that a ground network was still an open question. A day before the announcement, the FCC approved 15,000 next-generation Starlink Mobile satellites, and Johnsen has said satellite service to phones, “a full 5G quality service,” should start in the first half of 2028.

The spectrum has a history. It is Sprint’s old Nextel band, which T-Mobile inherited and agreed in May 2025 to sell to Grain affiliates for $2.9 billion in cash plus Grain’s 600 MHz licenses; that sale closed in August. T-Mobile’s filings add a twist: it “may receive a share of certain future proceeds from transactions entered into by Grain that monetize the 800 MHz spectrum licenses,” once Grain earns a set return. Part of SpaceX’s payment could end up with one of the carriers it means to compete against.

Why AT&T, Verizon and T-Mobile stocks fell

The three carriers have argued for months that satellites can’t replace towers, and on October 2 they formally launched a joint venture to buy direct-to-device satellite service from several providers. Starlink was notably absent from the announcement. “We’ll keep pricing in check, so there isn’t a bottleneck of any particular single provider that can dictate what that pricing is,” AT&T Chief Executive John Stankey said when the venture was announced in May. In September, Johnsen called it a “cartel maybe.”

The carriers’ public response to the deal stayed dismissive. “This company can have tons of spectrum available, but if they do not have the network to use it, it doesn’t matter. It’s just empty airwaves,” Verizon spokesman Rich Young told Reuters. FCC Chair Brendan Carr, whose agency must approve the deal, sounded pleased with the competition. “It’s not for us ultimately to pick winners and losers,” he told CNBC.

Spectrum is not a network

Analysts largely agree the deal improves SpaceX’s position without making it a carrier. Evercore ISI’s Kutgun Maral called 14 MHz “more of a coverage fix than a capacity solution,” while adding that “the window in which incumbents can treat Starlink Mobile as a science project is narrowing.” JPMorgan saw “limited near-term risk to U.S. wireless incumbents given the time, infrastructure and capital required to build a competitive terrestrial network.”

The capital required is large. Bernstein estimates a competitive national network would cost $50 billion to $130 billion, and TD Cowen puts it above $80 billion. MoffettNathanson’s Julie Zhu noted that the three incumbents spent about $650 billion on their networks in the decade before 2023. Craig Moffett, of the same firm, still thinks SpaceX’s only realistic path is a wholesale deal to run on one of the big three’s networks, which none has offered.

SpaceX doesn’t need to win many customers to matter, though. Analyst Vish Nandlall calculates that for every 100 million subscribers, a $1 cut in the monthly bill removes $1.2 billion a year from industry revenue, and he notes that SpaceX can start where it is strongest, with rural customers, connected cars and Starlink home-broadband bundles.

What it means for IT teams

Nothing changes yet. The FCC still has to approve the sale, SpaceX’s own satellite phone service is targeted for 2028, and analysts expect a ground network to take years longer.
Coverage options are multiplying. For rural clinics, field staff and home-care visits in dead zones, T-Mobile’s T-Satellite already runs on Starlink, Verizon offers Skylo-based service on some Android phones and, like AT&T, has a deal with AST SpaceMobile, and the carriers’ joint venture promises more suppliers. Starlink’s terminals already serve as backup connectivity at remote sites.
Watch the carriers’ next quarter. AT&T reports third-quarter results before the market opens on Wednesday, October 21. What it says about pricing, satellite plans and SpaceX is worth following for anyone with a carrier contract up for renewal.

What SpaceX is buying in the 800 MHz band

Why AT&T, Verizon and T-Mobile stocks fell

Spectrum is not a network

What it means for IT teams

Sources

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