Thousands of Verizon users were impacted by a nationwide telecommunication outage on Monday. Here's what to know and why your phone might say SOS.

Verizon customers reported their mobile phone service wasn't working in cities across the U.S., giving them only SOS mode.

Some Verizon cellular customers were faced with their phone in "SOS mode" on Monday and unable to use the network, according to reports on Downdetector and the telecommunication company's support ...

“To better understand how the outage impacted internet traffic on Verizon’s network, we took a look at HTTP request volume ...