Hello everyone. I just upgraded to a new 32GB iPhone 3GS and plan on selling my "old" 16GB iPhone 3G to help pay for it. Before putting my 16GB iPhone 3G up on eBay, what do I need to do to my iPhone beforehand? I am currently doing the "Erase all Content and Settings" under the Settings-->General-->Reset but what else do I need to do? Do I need to remove my SIM card? (I am in the USA and use AT&T). Another question... Would a used 16GB iPhone 3G fetch more money if it were unlocked/jailbroken before hand? Mine is not unlocked or jailbroken. Any info/tips would be appreciated.