Okay, so I posted on Craigslist that I am selling my Black 8GB iPhone3G for $300, and I received several offers. I talked to them on the phone. So, I know I can get the cash that I want for it. What do I need to do before I sell it? Just remove the SIM card? Is there a way to erase all the data from the phone in iTunes? I am going to back up my iPhone3G in iTunes, then I'm going to go tomorrow (or whenever they have inventory) to the Apple Store and buy an iPhone3G-S, and then "Restore" the data onto the 3G-S. But then can I still erase the 3G after that, before I sell it? (there are some serious questions here than need to be answered before people try this) Thank you in advance for your responses.