iPhone satellite texting: how it works and how to get weather with it

Updated 2026-09-01

How Messages via satellite works on iPhone 14 and newer, how to set it up on iOS 18, the unknown sender rule that surprises people, and how to get a real NWS forecast by text with no cell service.

Apple put a satellite radio in the iPhone and then did something unusual with it: they left it on, for free, for texting. If you have an iPhone 14 or newer running iOS 18 or later, you can send a text message from places with no cell service at all, and you already paid for it.

Here is how it actually works in the field, and how to get a weather forecast out of it.

What you need

• An iPhone 14 or newer. The satellite hardware starts there. No earlier iPhone has it.
• iOS 18 or later for Messages via satellite. Earlier versions only did Emergency SOS.
• A view of the sky. This is not optional.

How to set it up

There is nothing to set up. That is the good news and the reason people miss it. When your iPhone has no cell service and no wifi, and you try to send a text, it offers satellite on its own.

Practice once before you need it. Apple includes a demo: Settings, then Apps, then Messages, then Satellite Connection Demo. Run it in your driveway so the first time you see the pointing interface is not on a ridge in the dark.

Pointing the phone

The phone puts an arrow on screen and asks you to aim at a satellite that is moving. You turn your body slowly until the connection holds. It feels strange the first time and then it is easy.

• Get into the open. Tree cover and canyon walls will stop it.
• Stand still once it connects. Walking breaks the lock.
• Give it a minute. A message can take 15 to 60 seconds to go out, sometimes longer under partial sky.

The unknown sender rule

This is the part that catches people out, so it is worth being clear about. Over satellite, a number that has never texted you before cannot start a conversation with you. You have to text them first.

So before you head out, send us one text from anywhere with normal service. After that we can reply to you over satellite all week.

Getting a forecast

Open the Compass app. Your coordinates are at the bottom of the screen, and they work with zero service because GPS is a receiver. Then text them to us.

Swap TENT? for wx and you get the current conditions and the next 12 hours. Use fcst for three days, or alerts for warnings and wildfires.

Save yourself the typing

Two things take thirty seconds now and save you real effort later. Save our number as a contact, so on a ridge you type Tent instead of trying to remember four digits. And add our Shortcut, which grabs your GPS and pre-fills the message from your Lock Screen or your watch.

What about an older iPhone

An iPhone 13 or older has no satellite hardware, so Apple's features are out. You can still get satellite texting through T-Satellite for about $10 a month, on any carrier, as long as the phone is unlocked and supports eSIM. Everything above works the same after that.

One more thing

Text-to-911 works over satellite on a capable iPhone. Tentcast is not an emergency service and never will be. If you are in trouble, text 911 and not us.