Downdectector, a real-time outage monitoring program, reported service outages for Verizon, AT&T, T-Mobile and US Cellular Monday morning.

Verizon, AT&T, T-Mobile and US Cellular users were experiencing an outage on Monday morning, causing many to see the SOS icon. Here's what it means.

Verizon customers across the country have reported a network outage that has left their phone stuck in SOS mode. There might not be an immediatet fix — that will likely require Verizon's network resolving its issue — but there are some steps you can take to try to get your phone working again.