In short, when you see SOS on your phone, it means you're not connected to a cellular network. "If you see SOS or 'SOS only' ...
Verizon subscribers complained online their phones were suddenly left without service and stuck in “SOS” mode. DownDetector, a site that tracks outages, showed a spike in issues affecting Verizon ...
If SOS is showing up on your iPhone's status bar, it means there's no cellular connectivity for your phone. Here are two ...