SpaceX’s Direct-to-Cell Ambitions Could Make T-Mobile a $320 Billion Target
Speculation about SpaceX buying a major US wireless carrier has become increasingly common, but a new analyst note adds more substance to the idea. According to TD Cowen, SpaceX may eventually face a difficult choice: secure a major network-sharing agreement with an existing carrier or consider a massive acquisition, with T-Mobile emerging as the most logical target.
The reason comes down to one thing: spectrum.
SpaceX has already made a major move to strengthen its wireless ambitions, reportedly acquiring about 65 MHz of nationwide, exclusive-use, contiguous spectrum for $19.6 billion. That spectrum is spread across three bands, each with different advantages and limitations.
The first is about 15 MHz of unpaired AWS-3 spectrum. This is important because AWS-3 is already used by major US carriers for LTE and 5G networks, and it is supported by many premium and mid-range smartphones. That gives SpaceX a practical starting point for direct-to-cell connectivity.
The second piece is roughly 40 MHz of AWS-4 spectrum. This band is especially valuable for space-to-ground communication because of its favorable signal characteristics. However, it comes with a major drawback: most current smartphones do not support it.
The third is about 10 MHz of H-Block spectrum. This could offer far better data throughput than the low-band spectrum SpaceX previously used through its partnership with T-Mobile. But like AWS-4, H-Block is not widely supported by today’s phones.
That creates a major problem for SpaceX and Starlink’s direct-to-cell strategy. Having spectrum is not enough if the phones people already own cannot connect to it. For SpaceX to turn AWS-4 and H-Block into a mainstream mobile service, major smartphone makers would likely need to add support for those bands in future devices.
That is not a small request. Companies such as Apple, Samsung, and Google are unlikely to prioritize new band support unless there is a clear commercial reason to do so. SpaceX would need to show that its wireless plans have enough scale, demand, and long-term backing to justify changes in smartphone hardware.
The compatibility issue becomes clearer when looking at how current satellite-to-phone services work. iPhones, for example, use L-Band uplink frequencies and S-Band downlink frequencies for satellite-based emergency and direct-to-device features. SpaceX’s AWS-4 spectrum operates at 2000–2020 MHz for uplink and 2180–2200 MHz for downlink, while H-Block operates at 1915–1920 MHz for uplink and 1995–2000 MHz for downlink. Those differences matter because phones must be specifically designed to communicate on those bands.
SpaceX also faces another barrier: access to terrestrial wireless infrastructure.
For satellite-based direct-to-cell service to work well, especially in cities and other high-density areas, SpaceX cannot rely on satellites alone. Urban environments create challenges that satellite beams are not ideally suited to handle, particularly when thousands of users in a small area need mobile connectivity at the same time. Ground towers remain essential for capacity, reliability, and performance.
That is where the major US carriers become critical. SpaceX could try to solve the problem through a Mobile Virtual Network Operator agreement, commonly known as an MVNO deal. Such an arrangement would allow SpaceX to use an existing carrier’s network to provide service. But according to the report, AT&T, Verizon, and T-Mobile have been reluctant to enter such an agreement because SpaceX’s satellite ambitions could eventually make it a competitive threat.
Without a network-sharing deal, SpaceX has limited options for gaining access to the right terrestrial spectrum and tower infrastructure at national scale.
Regulatory rules add another complication. Under the FCC’s Supplemental Coverage from Space framework, a satellite using the same AWS-3 frequency as a nearby ground tower must yield to the terrestrial network to avoid interference. That makes AWS-4 more attractive for SpaceX’s satellite plans, but the smartphone compatibility problem remains unresolved.
This is why TD Cowen sees T-Mobile as the clearest acquisition candidate if SpaceX cannot secure a workable partnership.
T-Mobile already has a relationship with Starlink for direct-to-device coverage in rural areas and dead zones. That existing partnership could make integration easier than starting from scratch with another carrier. T-Mobile is also a pure wireless company with a history of aggressive competition and a more unconventional brand identity, which could make it a better cultural fit for SpaceX than other telecom giants.
Still, buying T-Mobile would be enormously expensive.
T-Mobile’s market value is estimated at around $200 billion. Once debt and other acquisition costs are included, TD Cowen suggests a deal could reach roughly $320 billion. If the transaction became hostile, the price could climb even higher.
SpaceX has significant financial firepower, but the numbers would still be daunting. The company recently raised $86 billion through its public offering and another $25 billion from the bond market. That could give SpaceX around $111 billion in available cash, depending on how those funds are allocated. Even then, a $320 billion T-Mobile acquisition would leave a funding gap of more than $200 billion.
That makes a takeover possible in theory, but extremely difficult in practice.
For now, SpaceX appears to be caught between three paths. It can continue pushing for a network-sharing agreement with an established US carrier. It can attempt a massive acquisition to control the spectrum and towers it needs. Or it can focus on persuading smartphone manufacturers to support AWS-4 and H-Block bands in future devices.
Each path has serious challenges.
A carrier partnership would be the simplest and least expensive route, but existing wireless companies may not want to help build a future rival. An acquisition would give SpaceX direct control over a national wireless network, but the cost would be staggering. Convincing phone makers to support new bands could unlock SpaceX’s spectrum holdings, but that process could take years and would require strong industry confidence in Starlink’s mobile roadmap.
The larger picture is clear: SpaceX wants to move beyond satellite internet and become a major force in mobile connectivity. Starlink’s direct-to-cell service could transform coverage in rural regions, remote locations, and areas where traditional cell towers are unavailable. But to compete at scale, especially in the broader US wireless market, SpaceX needs more than satellites in orbit. It needs compatible phones, usable spectrum, regulatory room, and terrestrial network capacity.
That is why the idea of a SpaceX-T-Mobile deal continues to attract attention. It may sound extreme, but it reflects a real strategic problem. SpaceX has the ambition and satellite infrastructure to reshape wireless service, yet the most valuable pieces of the mobile ecosystem are still controlled by traditional carriers.
Whether SpaceX buys, partners, or builds around that obstacle remains to be seen. But if Starlink’s direct-to-cell plans continue to expand, the battle over spectrum and network access could become one of the most important stories in the future of US mobile connectivity.
