Iphone 3gs 3.1.3 old bootrom Spirit Jailbreak I'm going to England this weekend so I unlocked my phone with Ultrasn0w. I assume it's unlocked, at least, because I did everything the way I was supposed to. I don't have a sim card from any other carrier so I can't really check. Anyone have experience traveling overseas with an unlocked iPhone? I'm hoping that when I get there I can just pop in a 02 prepaid card and be all set. Any advice?