I have an iPhone 3g that i am putting on Ebay because it DOES NOT read sim Cards. I have my personal contacts on this phone and the iTunes and App Store log in Email Etc... How can I delete this date with out losing my Jailbreak & Unlock? Again: MY PHONE CANNOT READ MY SIM CARD and even when the sim card is out of the phone the contacts are still on it! I'm on an Unlocked 4.2.1 Firmware with an iPad Baseband! It is also jailbroken with Cydia..