Starlink Direct to Cell is SpaceX’s service for connecting ordinary phones to Starlink satellites — no special hardware, using the carrier’s normal spectrum. It launched with T-Mobile in the United States and is expanding through partner carriers around the world. Here is what it does today and how to tell when a satellite is actually overhead.
What it does today
Like other direct-to-cell services, Starlink starts with text messaging and is adding data and more capability as the constellation grows. The dedicated Direct-to-Cell satellites are a specialised subset of the broader Starlink fleet, so coverage and capacity improve with each launch. Treat availability as expanding and intermittent rather than continuous everywhere.
Where it is available
Availability is tied to carrier partnerships, not just geography: the service works where a partner operator has enabled it and where regulators permit satellite use of that spectrum. Because the satellites are in low Earth orbit and constantly moving, even inside a supported region your phone connects only while a satellite is passing within view.
How to check when a satellite is overhead
That is the practical question for anyone relying on it in the field. GroundOrbit predicts satellite passes from public orbital data — the next overhead window, its peak elevation, and how long it lasts — for any coordinate on Earth. You can:
- Open the map and watch live Starlink ground tracks move across your area.
- Call the satellite API for pass, availability, and window data to build into your own app or dashboard.
The bottom line
Starlink Direct to Cell is real and growing, but at this stage it is a windowed service: knowing when a satellite is above you matters as much as knowing the service exists. That timing is exactly what GroundOrbit is built to answer.