iOs & iOs Apps (inc iPhone, iPad, iPod, iBrick)

quick question.

looks like I will be taking over my friends iphone 4 contract, so what with iphones being registered to one computer and all, I need to know whether I just reset his phone, wipe all info off it and then sync it to my computer or if there is more to it than that.

also anyone done the same thing, I'm out of contract with o2, but would like to swap over numbers but not sure how difficult/doable that is, if the contract can't be put into my name?

thanks in advance

Corny: one phone call to o2 to unlock phone, a visit to an o2 shop for a microsim and swapmysim.o2.co.uk is all you need. O2 is the easiest of all networks to transfer to microsim.