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'I Want a Free Month': Thousands of Customers Furious at AT&T After Widespread Outages The carrier has not yet disclosed the root cause of the issue.

By Emily Rella

Opinions expressed by Entrepreneur contributors are their own.

AT&T suffered mass outages across the U.S. on Thursday with many unable to use their devices to receive or send messages and phone calls.

"Some of our customers are experiencing wireless service interruptions this morning. We are working urgently to restore service to them," an AT&T spokesperson said in a statement to ABC News. "We encourage the use of Wi-Fi calling until service is restored."

Emergency service organizations across the U.S. on Thursday said that the AT&T outages were so bad that some customers were unable to make or receive calls to 911, per the Wall Street Journal.

According to DownDetector, the outages peaked just after 8 a.m. EST with just over 74,000 customers reporting an issue. More than 90% of the issues recorded said customers had no signal.

Related: Square Outage Causes Payment Problem for Small Businesses

Though the outages were nationwide, major metropolitan areas including Chicago, New York City, and Miami were affected the most. In Texas, large cities including Dallas, Houston, San Antonio, and Austin were also affected.

"I am in Illinois and we have not had any service since about 330 a.m. SOS signal only. Taking advice to use Wi-Fi calling at this time but it doesn't help in an emergency if you are out and about," one customer wrote on DownDetector.

When trying to send texts or complete phone calls, affected customers were seeing 'SOS' on the top corner of their devices where AT&T and the number of service bars usually are displayed. When a phone is stuck in SOS mode, it still should be able to make emergency calls via satellite.

Many took to social media to complain and see what was happening with their networks.

T-Mobile and Verizon Wireless customers also reported outages though they were not as widespread, with Verizon outages peaking at just over 4,200 customers and T-Mobile peaking at just under 2,100 customers at the same time as the AT&T peak.

"Verizon's network is operating normally," a Verizon spokesperson told CNN in a statement, noting that Verizon customers reporting issues may have been trying to contact customers on an AT&T device. "Some customers experienced issues this morning when calling or texting with customers served by another carrier. We are continuing to monitor the situation."

Related: What is Cloudflare? Internet Outage Explained

The situation is still developing.

As of 11 a.m. EST, over 63,500 AT&T customers were still reporting issues.

Emily Rella

Senior News Writer

Emily Rella is a Senior News Writer at Entrepreneur.com. Previously, she was an editor at Verizon Media. Her coverage spans features, business, lifestyle, tech, entertainment, and lifestyle. She is a 2015 graduate of Boston College and a Ridgefield, CT native. Find her on Twitter at @EmilyKRella.

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