Thousands experienced disrupted service across the U.S. Monday. Here’s what we know.

Credit: Photo illustration by Cheng Xin/Getty Images
Updated on July 27 at 10 p.m. ET — Beyond its initial statement, T-Mobile has no update on the outage.
“Our teams are actively working the reports of technical challenges impacting some customers,” the company said in a statement to Mashable. “Any service impacts are in the process of being resolved and are our highest priority. We know how critical it is to stay connected, and every available resource is focused on resolving this as quickly as possible
A post on Reddit about the outage already has more than 5,500 comments, and users are trading rumors about the possible cause of the T-Mobile outage, as well as potential fixes. We’ll continue to update this post as this story develops.
As of this writing, Downdetector shows that thousands of users are still actively submitting error reports. In addition, Status Gator reports that the outage is nationwide, with T-Mobile-connected providers like Mint Mobile and Boost Mobile also experiencing problems.
Updated on July 27 at 5:47 p.m. ET — Users on X are still complaining about a T-Mobile outage, and the topic is currently trending. However, user error reports on Downdetector have slowed since reaching a peak at 4:58 p.m. ET.
T-Mobile users appear to be experiencing disrupted mobile service on Monday afternoon.
More than 64,000 users reported problems as of 5:15 p.m. ET, according to Downdetector. User error reports started to spike at 3:48 p.m. ET, and as of this writing, they’re continuing to climb. The majority of users either listed the problem as “no signal,” or simply “mobile phone.”

Credit: Screenshout courtesy of Downdetector
Shortly after the issues were reported on Downdetector, searches surged on Google for SOS mode, which can appear on devices when service is disrupted. SOS mode means your phone should still be able to make emergency calls via satellite if needed.
On X, dozens of users complained of an outage, with some users specifically complaining about SOS mode.

A Mashable editor provided this screenshot of their phone stuck in “SOS Mode.” Credit: Mashable