Due to power outage occurred in Michigan, the U.S. central and western regions, many of AT & T mobile phone users on the 28th local time, most of the time signal interruption.
AT & T spokesman said via e-mail Meghan Roskopf, Bloomfield, Mich., area around 9:30 am on the 28th power, resulting in some states in central and western cell phone service interrupted intermittently. Blackout specific reasons not yet known.

Chicago-area AT & T mobile phone users, said signal interruption scattered users.罗斯科波夫said, because the problem is intermittent, part of a data connection and telephone calls are affected, but not all, which makes AT & T is difficult to determine exactly how many users are affected, making it difficult to inform the user what happened on specific issues.

Roskopf said that 17 o’clock, most of the affected equipment to restore service to 21 o’clock, all services are back to normal.