SpaceX has agreed to acquire a nationwide portfolio of low-band wireless spectrum from digital-infrastructure investor Grain Management, accelerating its effort to transform Starlink from a satellite internet provider into a direct competitor to established mobile-network operators.
The definitive agreement covers 100% of Grain’s nationwide 800 MHz spectrum portfolio. SpaceX said the portfolio includes up to 14 megahertz of paired spectrum, but the transaction remains subject to approval by the US Federal Communications Commission.
Neither company disclosed the financial terms. The Wall Street Journal reported that SpaceX would pay approximately $8 billion in cash, citing people familiar with the transaction. That figure has not been confirmed publicly by SpaceX or Grain and should remain attributed.
The significance of the deal lies in the physical characteristics of low-band spectrum. Signals at 800 MHz can travel longer distances and pass more effectively through walls, buildings and tree cover than higher-frequency connections. That could address one of the central limitations facing satellite-based mobile networks: providing consistent connectivity inside buildings and other obstructed locations.
SpaceX already has access to global 2 GHz mid-band spectrum for Starlink Mobile, which offers greater capacity. Combining that capacity with nationwide low-band frequencies could allow the company to pursue both broader coverage and improved indoor reliability without depending entirely on conventional mobile towers.
Most existing smartphones support the 800 MHz band, according to Reuters, potentially reducing the need for customers to buy specialised satellite handsets. However, SpaceX has not announced a nationwide launch date, pricing plan or final consumer-service configuration based on the newly acquired portfolio.
Grain acquired the spectrum from T-Mobile in a transaction completed earlier in 2026. Grain chief executive David Grain said the sale to SpaceX had the potential to change where and how Americans connect.
FCC chair Brendan Carr welcomed the possibility of additional investment and competition. The regulator had already approved SpaceX’s Starlink Mobile Gen2 constellation application, authorising the company to launch 15,000 satellites optimised for global 2 GHz services. Approval of the Grain transaction will require a separate regulatory process.
The agreement prompted an immediate market reaction. Shares of T-Mobile US and AT&T fell by more than 6% in premarket trading on Friday, while Verizon declined by approximately 5.3%. SpaceX shares gained 3.7%.
The pressure spread to Europe, where the STOXX Europe 600 Telecommunications index dropped 3.3% to its lowest level since February. The reaction reflected investor concern that satellite-based mobile services could develop from emergency or remote-area supplements into full commercial competitors to terrestrial networks.
Verizon spokesperson Rich Young cautioned that spectrum ownership alone does not guarantee a viable service. SpaceX would still need sufficient network capacity, satellites, ground infrastructure and regulatory approvals to use the frequencies effectively.
The deal does not mean Starlink Mobile has already replaced terrestrial networks, nor does it establish that a new US mobile service has launched. It gives SpaceX access to an important infrastructure asset that could support such a service if the transaction closes and the company completes the required network deployment.
The portfolio is limited to the United States, so it does not immediately change Starlink services or mobile regulation in Africa or other international markets. Its longer-term relevance is broader: successful integration could provide a model for satellite operators seeking spectrum partnerships or acquisitions in markets where fixed and mobile connectivity remains limited.
For consumers, the potential benefit is wider coverage in rural areas, disaster zones and locations poorly served by conventional towers. For regulators and incumbent carriers, the transaction raises questions about competition, spectrum concentration and the growing convergence of satellite broadband with mainstream mobile communications.
