Good morning all! So the time has come that we recently upgraded our iPad 1st gen to the current 4th gen. We are currently selling our iPad 1st gen and were looking for tips or things we should do before we sell the iPad mostly for security reasons. The only thing we have done so far is erase all contents and settings. I've heard reports that removing the SIM will cause issues, but we are also worried it has some information on it that we don't want there for the next owner. FYI it is an ATT model wifi + 3G 64G. Also, is there anything else we should do before we sell it? We also checked the iTunes 11 account under manage devices and it looks like the iPad 1st gen is not longer listed. I guess this was done automatically? TIA!