Verizon appears to be facing a massive outage, affecting customers across the U.S. On Monday, Sept. 30, many Verizon users found that their smartphones are stuck in SOS mode. This means that their device does not have cellular service and can only make emergency service calls.

Verizon Wireless experienced a nationwide outage that left users in SOS mode. The company has since restored its network.

Verizon has confirmed that its cell service is beginning to come back online following a massive outage affecting some of its mobile phone customers.

A Verizon outage that left more than 200,000 customers nationwide, including in Chicago, in SOS mode for hours Monday and caused hundreds of complaints on social media was resolved by the carrier, according to statement.

Verizon says it's fully restored its service after a major outage on Monday, but has a tip for anyone still experiencing issues.

American carrier giant Verizon is facing a major outage, leaving upto 37 percent of the US without mobile data, calling, or text messaging services.

Some Verizon users said on social media platform X their phones were stuck in “SOS” mode. Tens of thousands of Verizon users reported outages for the wireless carrier’s services across the U.S. on Monday, with Chicago and Indianapolis among the hardest-hit cities and some iPhone users stuck in “SOS” mode.

Experts weighed in on whether a cyberattack could have caused Verizon's outage on Monday. The number of people impacted remains unclear and the FCC is looking into the cause.