A T-Mobile outage left tens of thousands of customers without service, and many took to social media to vent their frustrations.

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

July 27 : T-Mobile was down for thousands of users in the U.S. on Monday, according to Downdetector.com.There were more than 60,000 reports of issues with the wireless carrier's…

No service or signal for thousands