iPhone 4 unlock help

[jmcd49]

Hi I've got myself iphone 4 on O2 I'm on virgin how much will it cost me to unlock to accept my sim I'm not looking for jailbreak just o access my sim call etc any help appricated

 

[miihackwii]

I am pretty sure that Jailbreaking is the only way

 

[dsmith150]

Jmcd49 just search on eBay iphone 4 O2 factory unlock . There's a few on there