T-Mobile SOS outage today: T-Mobile experienced a widespread service outage on Monday affecting thousands of users in California, Georgia, Arizona and Utah in the United States. Many customers reported their phones displayed an "SOS Only" message during the disruption. The wireless carrier acknowledged the technical challenges and prioritized restoring full service.

Many customers say their phones have switched to SOS mode, leaving them unable to make calls or use mobile data.

Thousands are experiencing disrupted service. What we know so far.

No service or signal for thousands