Seeing 'SOS' or 'Emergency SOS' on your iPhone can be alarming. It means your phone can't connect to your cellular provider's network, leaving you only able to make emergency calls. But why does this happen?
Several factors can trigger SOS mode. The most common is simply being outside of your carrier's coverage area. Think remote hiking trails, basements, or areas with spotty service. Another reason could be a problem with your SIM card. Try removing and reinserting it to see if that resolves the issue. Software glitches can also be culprits. Restarting your iPhone is often a quick fix for temporary software hiccups.
If none of these work, it might indicate a more serious hardware problem or an issue with your carrier. Contact your service provider to rule out network outages. If the problem persists, Apple Support can help diagnose potential hardware malfunctions. Don't panic! Understanding the potential causes can help you troubleshoot and get your iPhone back to normal.