THE STORY

AT&T, T-Mobile, and Verizon have announced an "agreement in principle" for a joint venture that would pool their ground-based spectrum resources to provide direct-to-device (D2D) satellite connectivity, aiming to eliminate wireless dead zones across the United States. The partnership, if finalized, would see the three largest US mobile carriers cooperating on satellite access for the first time — a remarkable move in an industry defined by cutthroat competition. The joint venture has divided the satellite operators who would provide the space segment: AST SpaceMobile and other D2D satellite companies are jockeying to be the backbone of the system, while the carriers negotiate which spectrum bands and orbital architectures will be used.

Direct-to-device connectivity — where ordinary smartphones connect directly to satellites without specialized hardware — is the final frontier of mobile coverage. This joint venture could standardize the approach and dramatically accelerate rollout.

THE DOUGH

The D2D satellite market is projected to reach tens of billions in revenue by the early 2030s. A unified carrier approach eliminates the fragmentation that has slowed adoption and gives satellite operators a single point of integration with the three networks that cover 99% of US mobile subscribers. AST SpaceMobile, which has been the most aggressive D2D satellite operator, could see its addressable market expand dramatically — or face margin pressure if the carriers use the joint venture to extract better terms. SpaceX's Starlink Mobile, which already has a D2D partnership with T-Mobile, faces new competitive dynamics from the broader carrier coalition.

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THE POSSIBILITIES

If this works in the US, every major carrier group globally will replicate the model. D2D satellite connectivity could become a standard feature of every mobile subscription worldwide within five years, creating a permanent revenue floor for LEO satellite operators and transforming the economics of rural connectivity.

THE HURDLES

Three fierce competitors cooperating on spectrum sharing is unprecedented and legally complex. Antitrust regulators may scrutinize the joint venture. The satellite segment — which companies, which orbits, which spectrum — remains unresolved and is where the real power struggle will play out.

WHAT TO WATCH

  • Formal joint venture agreement and FCC filing details
  • Which satellite operators are selected as D2D providers
  • AST SpaceMobile and SpaceX Starlink Mobile positioning within the framework
  • International carrier groups announcing similar D2D partnerships