If you see the SOS Only message pop up on your iPhone, a simple restart or toggling Airplane mode on and off can help fix the ...

When cellular service is available, your iPhone uses it for emergency calls. If you turn on Wi-Fi Calling and cellular service isn't available, emergency calls might use Wi-Fi calling.

Here’s How to Send Texts on an iPhone Even if You Lose Cellular Service All iPhone 14 and later models can connect via satellite, but your phone must be updated to the latest software, iOS 18.