[Mr Scott]

Hello nice to speak to you all i wonder if you could give me some advice on buying a used iphone and a few questions i have.I have a smart phone (network O2) which is (pay as you go) which i prefer and i want to buy a used iphone4(and still keep it a pay as you go phone)so of course i want to keep my same mobile number e.t.c and swap this over to the iphone but would this mean the iphone i buy would also have to be a(pay as you Go) phone or can i buy any iphone and just use my sim card which i have in my smart phone and it will still be a pay as you go phone when i fit it in to the iphone,also has regards to my sim card as it is O2 network would i have to be looking for a iphone which is already set to O2 network or can i buy a iphone and also buy a new O2 sim card and still be able to transfer my mobile number e.t.c to the iphone,i hope i've explained clearly enough and would appreciate any advice.Regards Scott

[grumpyoldbat]

First thing, if you have standard sized SIM at the moment, the iPhone 4 (and 4S) both take micro SIMs so you'd need to get your current provider to replace your SIM card.

When buying a second hand iPhone you simply need to ensure that it's either locked to the provider you're with now, or a fully unlocked phone. There's no difference between a PAYG or a contract unit as it'll be default settings when you get it and it will get the PAYG settings when you insert your SIM card.