Im looknig for the cheapest way to obtain an iPhone 4, I wont be using AT&T, I will be unlocking it to use on other carriers. So my option right now Im thinking of is adding a third line to friend's account. Which averages out to be around 751-756. My other option is buying the no commitment iPhone 4, which happens to be around $756 as well. My question is if I go for the no commitment iPhone 4, will the phone be activated upon purchased? Or do I have to activate it through AT&T and pay a fee + sign up a contract with AT&T? Anyone with experience, please fill me in on the insights.