I need to return my iPhone 4S to Apple and need to delete all my pics, data, etc. from it. Obviously I will take out the SIM card and I know about iwipe but from what I can tell so far that is only for jailbroken phones. I know about the Settings>General>Reset>Erase All Content and Settings but from what I'm reading this isn't going to really prevent someone from finding whatever info is left on the phone if they really want to do it. Can anyone point me in the right direction to get this stuff cleared off? And if I do 'Erase all Content and Settings' do I have to do any restore before I send it back to Apple?