i bought an iphone 4s on the at&t network for a friend. he is currently living in india, the phone was shipped to him and he is having difficulty unlocking it. i myself have never unlocked an iphone before. he is claiming he needs the original iphone purchaser information (first name last name, phone number it was purchased with and last four of the ss#) so i guess im here to find out if that information is needed to unlock an iphone, and if so why? if not, can you help explain to me how to go about unlocking it so he is able to use it since obviously the at&t network is useless to him while in india. any tips, tricks or general information is greatly appreciated. thank you very much for your time in reading and answering.