What SpaceX's Airwaves Deal Means for Phone Carriers and Customers

SpaceX has agreed to buy licenses for low-frequency radio airwaves that would let its Starlink Mobile business serve phones inside buildings, a step the company said would let it "become a major mobile carrier in the U.S.," CBS News reported. The deal still needs approval from the Federal Communications Commission.

Investors reacted quickly. According to CBS News, shares of T-Mobile and AT&T fell sharply in Friday morning trading, while SpaceX shares rose.

What SpaceX is buying and why it matters technically

SpaceX is purchasing the spectrum from the investment firm Grain Management, according to a filing with the FCC. CBS News noted that low-frequency spectrum can pass through walls, which addresses a known weakness for satellite service: walls, roofs and other structures can weaken mobile signals.

Elon Musk called the purchase "the last critical piece of the spectrum puzzle" needed for complete phone coverage in America, in a social media post on Thursday. SpaceX said the airwaves would let Starlink combine its satellite-to-mobile transmissions with an advanced terrestrial deployment that connects devices everywhere.

The company also said the FCC has approved Starlink Mobile's application to launch 15,000 satellites that will transmit in the 2 gigahertz band and connect directly to mobile phones.

Why it matters for phone customers and carriers

For customers, the practical promise is coverage in places where satellite signals struggle, such as inside homes and offices. The sources do not say when service would launch, what it would cost, or which phones and plans would be offered, so those details remain unknown.

UBS analyst John Hodulik said in a note to investors that the airwaves are compatible with existing handsets. He wrote that he does not foresee obstacles to regulatory approval. That suggests customers might not need special devices, though the sources do not confirm any consumer plans.

Hodulik also cautioned that it will take time for SpaceX to scale its wireless ambitions. In his view, the impact on near-term wireless industry fundamentals is limited.

How the market responded

• T-Mobile: down $18.58, or 11%, to $152.72 in morning trading Friday.
• AT&T: down $1.83, or 7.4%, to $22.76.
• SpaceX: up $2.61, or 1.6%, to $163.18.

CBS News said the drop in telecom shares reflected investors weighing the potential effect of a major new player in the industry.

What happens next

The purchase agreement must still win FCC approval. Until then, the deal is not final, and SpaceX has not detailed a timeline for offering indoor service in the sources reviewed.

Around Prague, based on reporting by CBS News