I'm going to sell my 3gs before the 4g comes out and then get the new 4g. I've had an invisishield on since day one and the screen has never been touched. I've also had a frog case. Which caused some minor scratching to to bezel in certian places but overall kept the phone in perfect shape. Never been exposed to the inside of a bathroom, beach or anything humid or water hazaedish. Right now I've been running 3.0.1 unlocked. This phone is running whatever baseband came on it when it originally came out in June July. Should I have all original boxing, but maybe not the headphones. Anyway. What steps should I take to sell my phone jailbroken and unlocked without having any of my information attainable?