I have a iPhone 5s that is with AT&T. I would like to know, how to unlock the iPhone so I can use with another carrier. I don't want to go through AT&T website and have to wait, nor do I want to go and pay someone to do it.
Let's say when someone goes somewhere, like at a retail store to get there iPhone unlocked, what is the person they're paying exactly doing to get there iPhone unlocked?
He/she is using some kind of codes correct? What are the codes? and how do I get the codes to unlock it myself?