Tens of hundreds of AT&T prospects reported issues with their cellphone service on Thursday morning, with a map of the outage exhibiting individuals affected throughout the U.S.

Prospects of different networks additionally stated they skilled issues, however rival carriers Verizon, T-Cellular and UScellular stated their networks had been operational and famous that their customers had been in all probability having issue reaching individuals on AT&T’s community. 

At about 11 a.m. ET on Thursday, AT&T stated it had made progress in restoring its community. By mid-afternoon, it stated service had been totally restored.

“We have now restored wi-fi service to all our affected prospects,” AT&T stated in an announcement at 3:10 p.m. ET. “We sincerely apologize to them. Holding our prospects linked stays our high precedence, and we’re taking steps to make sure our prospects don’t expertise this once more sooner or later.”

Later Thursday night time, the corporate attributed the outage to a software program bug.

“Primarily based on our preliminary evaluate, we consider that immediately’s outage was brought on by the applying and execution of an incorrect course of used as we had been increasing our community, not a cyber assault,” the corporate stated on its web site. “We’re persevering with our evaluation of immediately’s outage to make sure we hold delivering the service that our prospects deserve.”

Here’s a take a look at the areas that had been affected in the course of the outage.

AT&T outage map

Downdetector had about 40,000 reviews of service points from AT&T prospects at round midday Jap Time, down from a peak of greater than 70,000 reviews. A lot of the complaints had been centered on issues with cellphones or wi-fi service. 

Outages had been highest in Houston, San Antonio, Austin, Chicago, New York, Miami, Dallas, Atlanta and Indianapolis, in keeping with Downdetector.

What triggered the AT&T outage?

The corporate attributed the outage to a software program bug. 

The outage snarled 911 facilities, with some legislation enforcement officers noting that some individuals had been calling the emergency quantity to check whether or not their telephones labored. 

Officers urged individuals to chorus from calling 911 to check their telephones. 

“Many 911 facilities within the state are getting flooded w/ calls from individuals making an attempt to see if 911 works from their cellphone. Please don’t do that,” the Massachusetts State Police wrote on X, the previous Twitter.

Taylor Johnston contributed to this report.