SOS, Verizon and iPhone
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If SOS is showing up on your iPhone's status bar, it means there's no cellular connectivity for your phone. Here are two quick ways to troubleshoot the problem if you think you should have a cellular connection.
As of 10 a.m., Verizon is reporting small outages in Yosemite and Vidal, way in the desert in San Bernardino County, but no other outages.
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iPhone personal hotspot missing? Get it back fast
To turn off your personal hotspot on the iPhone, go to Settings > Cellular > Personal Hotspot and tap the switch to disable the hotspot. You may be prompted to enter your iPhone's passcode. How do I change the personal hotspot name on an iPhone?