How do I fix SOS issues on my iPhone?

That means your iPhone is not capable of connecting to your carrier’s cellular network. As a result, you will want to contact your carrier for help.

Maybe you have a friend. If you have no friends, find a way to get to the carriers store or headquarters. Since you have an Internet connection now, see if your carrier has an online support site.

Nothing is going to happen until you get in touch with your carrier one way or the other.

SOS means that your iPhone cannot connect to your carrier's cellular network.

Temporarily use another phone to contact your carrier and ask them to troubleshoot things from their end.