An Associated Press report suggests AT&T is using an unadvertised loophole to entice long-time iPhone customers to stay with the wireless carrier. In this promotion, an AT&T iPhone owner that once had an unlimited plan in the past is eligible to switch back to this plan after a quick call to customer service. Unlimited data is no longer offered to new customers and was removed as an option when the iPhone 4 debuted last June.
AT&T would not comment on this unlimited option, merely stating that "We handle customers and their situations individually, and we're not going to discuss specifics." Some customers were reportedly presente
