Almost all mobile carriers around the globe sell phones together with their mobile plans.
This code is usually obtained from AT&T call centers using a special service called Torch.
source: www.techworm.net
AT&T employees were running Malware on their PCs to aid Phone Unlocking Service
AT&T has filed a lawsuit against its three former call center employees, accusing them of running malware on their systems to aid a phone unlocking service by providing them the unlock codes of AT&T.
