T-Mobile Pursuing AT&T Customers With 'Grandfathered' Plans

T-Mobile offered inducements for some AT&T customers to switch to its network Thursday. “Last week, AT&T hiked up rates on some of their unlimited ‘grandfathered’ customers, the third increase in just the last two years,” T-Mobile said. “Those poor AT&T customers are now paying 50 percent more than originally. Quick, someone get AT&T execs a dictionary -- that’s not how ‘grandfathering’ works.” T-Mobile bills this as its “Why the Hike” offer. T-Mobile CEO John Legere often refers to AT&T and Verizon as “Dumb and Dumber.” The price hike “seals it,” Legere said. “AT&T is ‘Dumber’ for sure.” The offer applies to some AT&T customers with data unlimited for iPhone plans. AT&T didn't comment.