Hi, I've just bought a 2nd hand original iphone and am just wondering what I have to do. I'll be using an O2 Pay as you Go Sim in it. I've found various things I have to do: Sync to itunes and activate iphone Change Data settings to pay as you go I'd also like to reset the iphone to it's factory settings so it's a fresh start, with the previous users information removed. Would it be best to do this first or do the above and then format it. Also is there anything else I have missed off? Thanks.