i bought an iphone 2g when they first came out and i paid £270 and took the phone home and had to activate it on itunes but just unlocked it instead, can i do this with the 3gs? i looked on o2's site and they quote £180+ for a 3gs on one contract and £87 on another contract so what i'm basically saying is can i go into 02, buy the phone for the £80+ price and then go home and unlock it and put my simplicity sim in