Hi, i have been looking at buying an iPhone 4S on PAYG and was ready to go out and get one this weekend when a friend said that they could get one on their contract for 180 (an upgrade), i'm just wondering if the phone would take a PAYG sim straight away, or if there is a legal way to unlock the phone to take the sim. This would save me a considerable amount of money, and as you can imagine, that would be nice, thanks for your help!