When you are out of mobile and Wi-Fi coverage, your iPhone can still send a text — by satellite. This guide shows how to set up Messages via satellite before you need it, and how to send a message when you are off the grid, so a hiking trip, a rural drive or a storm outage does not leave you cut off.
What you need
- An iPhone 14 or later, with an active SIM.
- iOS 18 or later (in Mexico, iOS 18.4 or later), according to Apple Support.
- iMessage turned on before you leave coverage, and emergency contacts or a Family Sharing group set up in advance, so contacts can message you back.
- A clear view of the sky. Satellite messages need an open sky; heavy foliage, buildings and mountains can block the connection.
Step-by-step: send a message via satellite
- Prepare before you go. Turn on iMessage, add emergency contacts, and try the Satellite Connection Demo: go to Settings, then Apps, then Messages, and tap Satellite Connection Demo. Practising at home means you will not be learning the steps in an emergency.
- Open Messages when you have no coverage. When cellular and Wi-Fi are unavailable, open the Messages app and start a new conversation or open an existing one. If satellite messaging is supported where you are, the phone will offer it — tap Use Messages via Satellite on the prompt.
- Follow the on-screen guide to connect. The phone shows arrows guiding you to point it at the sky. Hold it steadily, keep a clear view of the sky and horizon, and wait for the connection. A green dot and satellite indicator show you are connected; if the signal weakens, the dot turns orange and arrows help you reposition.
- Compose and send. Type a short text message and tap send. Satellite bandwidth is limited, so keep messages brief. Delivery can take longer than a normal text — Apple notes messages may take 15 to 30 seconds or more depending on satellite movement.
- Wait for replies. Replies arrive via satellite while the connection stays active. If your contact does not use iMessage, runs an older iOS version, or you have not messaged them via iMessage recently, your message may go as SMS via satellite instead.
Tips and common problems
- Stay outside and still. Do not walk while connecting, and avoid raising the phone above your head; the on-screen guide shows the right angle.
- Know the limits. You can send and receive text, emoji and Tapbacks via satellite, but not photos, videos, audio messages, stickers or group messages.
- Use the Connection Assistant. With no coverage, you can also reach satellite features from Control Center (tap the Cellular button, then Satellite) or from Settings, then Satellite, and choose Messages via satellite.
- Emergency SOS is separate. If you need emergency help with no coverage, your iPhone will offer Emergency SOS via satellite when you try to call emergency services. Set up your Medical ID in the Health app first so responders can see allergies, conditions and emergency contacts.
- Check carrier fees. SMS messaging via satellite availability depends on your carrier, and carrier fees may apply.
Takeaway: Set up iMessage, emergency contacts and the demo before your trip, then, off the grid, open Messages, tap Use Messages via Satellite, follow the sky guide, and keep your messages short.
Sources: Apple Support: About Messages via satellite, Engadget, iGeeksBlog.