Report: AT&T Quietly Allowing Some Users to Switch to Unlimited Data Plans

As Verizon (VZ) and AT&T (T) battle for iPhone fans, Verizon can trumpet one advantage: the availability of unlimited data plans.

Officially, you can't move from a limited plan to an unlimited plan on AT&T. But a little-known loophole means that many users are in fact eligible for such a deal, according to The Associated Press.

Users who previously had an unlimited data plan can still qualify for the deal, even if they've since made the switch to a limited plan.

Jose Argumedo of Brentwood, N.Y., told the AP that he and a friend were able to get on an unlimited plan after speaking to the company's customer service.

Mark Siegel, a spokesman for AT&T, wouldn't confirm that the option exists.

"We handle customers and their situations individually, and we're not going to discuss specifics," he said.

AT&T officially allows users with an unlimited data plan to keep the plan when they upgrade to another phone. It's the option to move back to an unlimited plan that is little known.