For thirty years a mobile phone has needed a tower within a few kilometres to send a text. That rule is breaking. Satellites flying about 350 km overhead can now act as a “cell tower in space”, talking straight to ordinary smartphones with no dish and no special handset. In the US, T-Mobile has sold this as a consumer service since July 2025. In December 2025 Airtel Africa signed up to bring the same Starlink system to all 14 of its African markets, with texting first. This report explains how direct-to-cell works, who is live, what it costs, and what it means for SMS in places like rural Kenya.
Key findings
How a phone talks to a satellite
Normal phones already speak 4G LTE. Direct-to-cell satellites carry very large antennas and a radio that behaves like an LTE base station, borrowing a slice of the partner operator’s own spectrum. To the phone, the satellite simply looks like another tower on its home network. The cost is speed: each satellite beam is shared over a huge area, so the first services are built around small, delay-tolerant messages. That is why SMS is the first thing to go to space. A 160-character text is tiny, it can wait a few seconds, and every phone ever sold can receive one.
Will your message fit the satellite pipe?
Type a message. Phase-one satellite texting carries standard SMS, so length and character set matter just as they do for bulk SMS.
Who is live, and who is next
Starlink is the furthest ahead but not alone. AST SpaceMobile, backed by AT&T, Verizon and Vodafone, is building larger satellites aimed at broadband to phones. Apple’s iPhone has offered emergency SOS by satellite through Globalstar since the iPhone 14 in 2022, but that is a separate, Apple-only system. The table below covers Starlink’s operator partners named in public reporting.
Direct-to-cell tracker
Tap a region. Status is as publicly reported; launch dates can slip with regulators.
T-Satellite: the first real test
T-Mobile launched T-Satellite on 23 July 2025. It is free on the carrier’s top plan and costs US$10 a month for others, including customers of rival networks through an eSIM. About 2 million people tried it during the beta. Two early lessons stand out:
- People receive more than they send. Three times as many messages were received over T-Satellite as were sent. Satellite texting works best as a way to reach people, not just for them to call out.
- Disasters drive use. During the Los Angeles wildfires, T-Mobile used the service to reach nearly 198,000 people in affected areas. Day to day, use stays low, because most people are inside normal coverage most of the time.
What changes in Africa
Airtel Africa and SpaceX announced their deal on 16 December 2025. Airtel says it is the first operator in Africa to sign for Starlink Direct to Cell. The plan has two stages:
Each country’s regulator must approve the use of spectrum from space, so Kenya, Nigeria, Uganda and the other markets may switch on at different times. At the time of writing we could not find a public confirmation that any Airtel market had gone live.
Why this matters for SMS senders
Read more on who is still offline in Who Is Still Offline 2026, and on how Kenyans use texts today in The State of SMS in Kenya 2026.
Methodology
This report brings together operator announcements, Starlink’s published service pages and trade press from December 2025 to October 2026. Where sources gave conflicting satellite or subscriber totals, we used the lower figure from a primary source, or left it out. Launch dates are targets, not promises. The SMS fit tool uses the standard GSM-7 (160 characters, 153 per part) and UCS-2 (70, 67 per part) limits.
FAQs
Do I need a new phone for satellite texting?
No, for most recent 4G smartphones. Direct-to-cell uses the operator’s normal LTE spectrum, so supported phones connect with no extra hardware. The operator publishes which models work.
When will it reach Kenya?
Airtel Africa is targeting 2026 for a first phase across its markets, including Kenya, but each launch needs approval from the national regulator. No Kenyan launch date had been published at the time of writing.
Can I make calls by satellite?
Not in Africa’s first phase. Airtel says voice and fuller data will follow once Starlink’s next-generation satellites are working.
Will bulk SMS work over satellite?
Satellite texting carries standard SMS on the operator’s network, so a message sent through a normal SMS gateway should reach a phone that is connected by satellite. Short, single-part messages are the safest bet.
Sources
- Space in Africa, “Airtel Africa partners with SpaceX to bring satellite-to-mobile connectivity across Africa”, 17 December 2025. spaceinafrica.com
- Via Satellite, “Airtel Africa partners with Starlink for Direct to Cell service”, 17 December 2025. satellitetoday.com
- AllAfrica, “Kenya: Airtel, SpaceX partner on Starlink mobile connectivity”, December 2025. allafrica.com
- Starlink, “Direct to Cell”. starlink.com
- MarketScreener / Reuters, “Starlink signs global direct-to-cell deal with Veon”. marketscreener.com
- GSMArena, “T-Mobile’s T-Satellite service is now available to everyone”, July 2025. gsmarena.com
- ConsumerAffairs, “New messaging service from T-Mobile connects from almost any location”. consumeraffairs.com
- TelecomLead, “T-Satellite adoption soars”. telecomlead.com
Frequently asked questions
Do I need a new phone for satellite texting?
No, for most recent 4G smartphones. Direct-to-cell uses the operator’s normal LTE spectrum, so supported phones connect with no extra hardware. The operator publishes which models work.
When will it reach Kenya?
Airtel Africa is targeting 2026 for a first phase across its markets, including Kenya, but each launch needs approval from the national regulator. No Kenyan launch date had been published at the time of writing.
Can I make calls by satellite?
Not in Africa’s first phase. Airtel says voice and fuller data will follow once Starlink’s next-generation satellites are working.
Will bulk SMS work over satellite?
Satellite texting carries standard SMS on the operator’s network, so a message sent through a normal SMS gateway should reach a phone that is connected by satellite. Short, single-part messages are the safest bet.