Qualcomm Landed Its Biggest 5G Deal Ever. It Isn't in Phones.

Chipmakers spent the past few years riding an artificial intelligence boom that mostly passed QualcommQCOM by. The company made its name on the modems inside smartphones, a mature market with limited room to grow. Its biggest 5G win to date now comes from a rocket company building cell towers.

A phone chipmaker moves up the tower

SpaceXSPCX chose Qualcomm's Dragonwing hardware and software for the terrestrial 5G network behind Starlink Mobile, the companies announced this week. Qualcomm calls it its largest 5G initiative to date.

Qualcomm supplies two pieces. The QRU100 platform handles radio processing, and the QDU100 handles Layer 1, the foundational signal processing layer beneath everything else in a network.

SpaceX builds the rest. Qualcomm's technology planning executive vice president Durga Malladi said his team provides the components inside the box while SpaceX builds the box and the higher software layers.

The radios use a 64 transmit and 64 receive antenna setup, a configuration usually reserved for higher frequency bands. Malladi said bringing it down to the 2 GHz band is Qualcomm's own innovation.

Why satellites were never enough

Starlink already matters more to SpaceX than anything else it sells.

The satellite unit accounted for 36% of SpaceX revenue in the third quarter and 85% of operating profit. Its direct-to-device service still can't match the voice, video, and data coverage carriers deliver on mainstream smartphones.

So SpaceX is buying the missing pieces. It agreed last month to purchase a nationwide 800 MHz spectrum portfolio, and the Washington Post reported it's in talks to acquire Boost Mobile from EchoStarECHO.

The surprise is how ordinary it looks

SpaceX had floated a cheaper path: mounting small cellular base stations on Starlink rooftop terminals so fewer traditional towers would be needed. The Qualcomm deal points the other way.

Mobile Experts principal analyst Joe Madden read the agreement as a bet on conventional, high-power cell sites rather than small low-power radios attached to Starlink broadband terminals. He estimates SpaceX will spend at least $100B building out its combined satellite and terrestrial network, spectrum included.

Deployment starts in 2027 across tens of thousands of sites, all macro cells, the large towers that cover wide areas.

Malladi told reporters the multi-year deal is structured so the rollout ramps up rapidly after launch. Neither company disclosed financial terms.

What each side is betting on

Qualcomm has chased the 5G infrastructure market since 2020, with earlier deals covering VerizonVZ and VodafoneVOD. SpaceX is one of its highest-profile 5G customers, and the relationship extends toward 6G equipment talks.

For the incumbents, the threat moves slower than the headline suggests. Verizon, AT&TT, and T-MobileTMUS hold decades of network coverage, existing subscribers, and billing and support operations SpaceX has yet to build.

Madden expects SpaceX to build more cheaply than the three carriers, partly because it carries no legacy equipment. He still questions whether smartphone subscribers alone can justify the spending.

Axios notes the likely answer sits elsewhere. Continuous outdoor coverage suits delivery drones, security robots, and autonomous vehicles, markets where today's networks leave gaps.

SpaceX plans tens of thousands of new cell sites but hasn't named tower partners. Mobile carriers generally lease space from American TowerAMT and Crown CastleCCI, which host multiple carriers at one site. The tower-stock read-through is its own story.

SpaceX listed in June in the largest initial public offering on record and now carries a valuation close to $2T. That is a lot of capital aimed at a network that has yet to name its tower partners.