I am buying an iPhone 4 on Monday and selling my iPhone 3G. My biggest concern is that I've downloaded and logged into my bank account and used pageonce to access my various account and billing information on my phone. Is simply resetting all setting (not erase all settings and content) and restoring enough to remove the info from my phone or do I need to erase all content and settings and restore? Also, I've read that when you erase all content and settings on jailbroken phone you have to restore it first, erase all content and settings and restore again. Am I correct? One last thing, do I need to check deauthorize this computer I iTunes? Thanks for the help!