OK, just one quick question (I did search for an answer, im sure there's been one, but the only ones I could find were outdated now that ziphone's around): Im in the UK, want to buy an iphone and use a different o2 simcard in it (O2 simplicity as I get a lot more calls and texts and unlimited data and only tied to 1 months contract at a time for £25 a month). I don't want to put any other networks simcard it my iphone, nor am i too bothered about putting unauthorized apps on it, i just want to not use the o2 iphone simcard and use my own o2 card instead. Any ideas whats the best way to do this? Is it a jailbreak i need to do, or an unlock or something else? Cheers!