AT&T (T) is now fully on board the 4G prepaid bandwagon. A week after adding 4G support to...

|By:, SA News Editor

AT&T (T) is now fully on board the 4G prepaid bandwagon. A week after adding 4G support to its GoPhone prepaid plans, the carrier is adding it to its somewhat more upscale AIO prepaid plans (launched in May). AT&T's change-of-heart on AIO suggests it's willing to risk cannibalizing a part of its lucrative postpaid base on account of the prepaid smartphone market's rapid growth and intensifying competition. Prepaid-dependent T-Mobile USA (TMUS) and Leap Wireless (LEAP) are among the carriers in AT&T's crosshairs.