Unlock iPhone from iTunes

I understand what you mean now by "unlock." This is done through your

carrier. You must contact AT&T, T-mobile etc. (Whoever your carrier

is) and they can either unlock it for you, or explain what steps you

need to do since the rules and steps are different for each carrier.

If it is your iPhone associated with your Apple ID if you are locked out, but plugging it into the computer you might be able to unlock it, but it depends on the situation and if it is your iPhone or not.

You must contact your original carrier to unlock it, then you can move it to a new carrier.