I recently lost my iphone 3GS 16gb and after about 6 weeks my insurance company have finally settled the claim but they are giving me cash as the say they cannot get my phone anymore. It's a pain but i have been looking online. There are ones that say they have been 'jailbroken' and ones that say they are on other networks but can be easily unlocked. Is it easy to unlock? Are there issues with this and jail broken ones when you try to sync with iTunes or update the software? any advice gratefully received.