You misunderstand my post. I bought the iphone from a shop which I have jailbroken but the firmware is 4.1 so the baseband cannot be unlocked with ultrasn0w yet (see @musclenerd on twitter). I am using it quite happily alongside my old phone at the moment but I can't even pay three to unlock it because the iphone is second hand (though like new) and the original owner still has a contract with them.