AT&T Taking Prepaid Network Nationwide

Breaking into no contract phones market

AT&T is pushing more aggressively into the no-contract market, announcing Thursday that it's taking its prepaid network, Aio Wireless, nationwide in mid-September. The wireless service was first launched in May to customers in Florida, Texas, and Atlanta.

Aio has three plans to choose from, and they all include unlimited talk, text, and data. The service costs $40 to $70 a month, depending on the plan. New subscribers can get a free month of service if they sign up before September 29.