I'm about to buy a used locked iPhone that I want to unlock for t-mobile using the software gui. Do I need to have a SIM card in order to do that? The person who is going to sell it wants to keep their SIM for a different phone and I don't want to sign up for service just yet.
Also-is it possible to get video out support on an unlocked iphone or is it only through the firmware update at this point? Thanks guys