Help buying 2nd hand iphone 3g

Hi all,

Hope you can advise me.
I am thinking of swapping/exchanging my Nokia 97 for an 8Gig iphone 3g on O2 from www.cex.co.uk

Before I do I am sure there are things i need to know first.
I do not have an O2 sim so will need to jailbreak and unlock it.

Do i have to make sure I get a certain firmware version?
Or can all firmware versions now be jailbroken and unlocked.

Do I need to have a O2 sim in order to perform the jailbreak and unlocking.

When I turn on the phone will it complain and ask me for a sim to be inserted like some phones you cant access anything until you insert a Sim.

Sorry for what may seem silly questions but I am new to iphone and although i have searched and the process seems easy it does not say anything about if i will need a sim already..

Thanks.

 

any FW version can be jailbroken. just make sure you use redsn0w .80 as its the newest.

you dont need a sim in while jailbreaking.

youll be able to access 'things' even if you dont have a sim in, you just wont be able to make calls obviously.

 

Wow wabashman
Thanks for the quick reply.
Would you recomend Ziphone at all for this

 

ziphone?? is that some knock off iphone or something? i have a legit iphone 3g and love it.

 

It is supposed to be an all in one jailbreaker and unlocker.
www.ziphone.org/

 

why not just jailbreak it yourself? it only takes like 2 minutes.

 

I would agree with wabashman, it's a very simple process. If you just give it a shot, you'd be surprised how easy it is to do yourself.