Hi guys, Im planning on upgrading to iPhone 4. Id like to try and sell my old iPhone 3G on eBay or something. What do I need to do to prepare it? How do I wipe the iPhone of my info? Restore factory settings? Do I need to remove the SIM card? Should I jailbreak it and then try and sell it? Is that necessary? Or do you think its even worth anything, would anyone buy it? Thanks in advance for your help.