Hey guys! Looking to throw my old iPhone on eBay to fund my 3GS purchase. I've never messed with anything to do with unlocking/jailbreaking before. First off, what exactly is the difference between "unlocking" the phone, and "jailbreaking" the phone? Secondly, I used QuickPwn to unlock my iPhone. It seemed successful. But, other than a new icon on my home screen, how can I be sure it worked? Thanks!