We don't provide any unlocking info here because we cannot verify idantity or ownership.
If you want to use the phone with another cell phone carrier all you have to do is go to that cell phone provider and have them setup your account and then have them add the phone as the device that you want to use.
There are limitations as to which cell providers that you can use because the phone has to be able to be used in that system. You can't change the harware since a phone is constructed for a certian use. For example there's CDMA (Verizon) and GSM (AT&T) and you can't use a Verizon phone on the AT&T system and you can't use a AT&T phone on a Verizon system.