unlocking iPhone to use with another carrier
my friend gave me her iPhone 5s from AT&T I am currently with cricket when I took it to cricket the girl try to put a SIM card and it read a error activation error message and I asked why and she said that is probably needed to be unlocked how can I do that? what would be the cheapest wayI tried to do it through AT&T but she doesn't remember most of the information that they ask to unlock the phone for me so I need another way. I would appreciate to help in this matter thank you.
Is this a good question?