Hi, I have had a read through some of the very useful tutorials and still am a little unsure. I want to unlock my O2 activated iPhone so that I can sell it as unlocked on ebay, personally I have no use for it unlocked as I am an iPhone O2 customer. What tool is best to do this? Also, when you unlock the iPhone do you have to remove the O2 SIM card? I do not want to jailbreak the phone or anything like that I jst want it to be unlocked so as to work on other networks. Thanks for replies, sorry if these questions are in the stickies, but I am unsure as to what I need to do!