T-Mobile's Backdoor Exclusivity Prevents You From Using Old Phone With AT&T

T-Mobile's Backdoor Exclusivity Prevents You From Using Old Phone With AT&T

Reader Greg accidentally ran his iPhone through the washing machine. Whoops. Luckily, he still had his old BlackBerry from his days with T-Mobile, so he swapped in his AT&T SIM card to the BlackBerry and fired it up. Unfortunately, his BlackBerry was still locked by T-Mobile, and they didn’t feel like helping a former customer.