Make sure your iPhone supports Satellite features
Update your iPhone to the latest iOS version
Go to an open outdoor area with a clear view of the sky and horizon
Turn on Airplane Mode if needed
Open the app or feature that supports satellite use
Follow the on-screen prompts to connect to a satellite
Point your iPhone in the direction shown on the screen
Hold the phone steady while it connects
Send the message or use the emergency feature as directed
Wait for confirmation that the satellite connection is complete
Stay outdoors until the process finishes
Use Emergency SOS via satellite only when cellular and Wi-Fi are unavailable