Thousands of cell phone users have been unable to place calls or text this morning due to outages in major U.S. cities.
(CBS NEWS) - Customers of numerous U.S. cell service providers were reporting outages early Thursday morning, according to the website Downdetector.com, which tracks such reports.
AT&T had by far the most, with tens of thousands of customers telling Downdetector they had no service.
Customers of T Mobile, Verizon, US cellular and Consumer Cellular were also reporting issues, though far, far fewer.
The reports of AT&T outages appear to have started at around 4 a.m. EST, Downdetector said, seemed to be waning some two hours later, then picked up again and were topping 60,000 at 7:30 a.m. EST.
Some municipalities were experiencing difficulties with 911 service.
The outages appear to be impacting those in major cities across the United States. Many users have said they have been unable to make calls, text or access the internet.
There was no word on the source of AT&T's problems.