AT&T reports some U.S. customers unable to make wireless calls

(Reuters) - AT&T Inc on Wednesday said that some U.S. customers were not able to make wireless calls but that restarting their cellphones would fix the issue.

DownDetector.com, which monitors outages, said customers across the country reported outages, including in Houston, New York and San Francisco.

AT&T, which also owns satellite television service DirecTV, told customers on Twitter that it had no estimate when service would be restored and technicians were working to fix the problem.

According to DownDetector.com, customers reported more than 6,000 incidents by 6 p.m. EST (2300 GMT), out of which 44 percent found problems with the internet service, while 31 percent faced issues with the phones.