Am I supposed to "Reset All Settings' under settings>general>reset when I buy a used iPhone off Craigslist that isn't jailbroken and still has previous owners music, etc on it? I am having a hard time getting the goPhone sim to work, jailbreaking, and even restoring (without having to upgrade from 3.0). All I have is WiFi and 'no service' on the top. Not sure if I should be doing something else. My apps won't sync to this phone either. And the last guys name still pops up on iTunes and I can't find a way to put mine on. I am so tired of wasting time trying to get this to work! Ahhh!