Apple released iOS 18.3 today with support for T-Mobile’s Starlink satellite network, allowing iPhone users to send text messages in areas without traditional cellular coverage.
Why it matters: The integration of SpaceX’s Starlink network fundamentally changes how iPhones handle connectivity in dead zones, providing emergency communication capabilities to millions of T-Mobile customers in remote areas.
Technical Details: The update leverages T-Mobile’s existing midband PCS spectrum to connect with Starlink’s constellation of over 7,000 low Earth orbit satellites, enabling text messaging even in areas without cellular towers.
- Uses existing iPhone hardware
- No special equipment needed
- Low latency of 25-35ms
Service Rollout: T-Mobile has begun sending invitations to users who signed up for beta testing in December:
- Initial text-only service
- Voice and data planned for 2025
- Nationwide coverage targeted
Looking Forward: While currently limited to text messaging, T-Mobile plans to expand the service to include voice and data connectivity throughout 2025.