Wondering for my sake. I've sold my previous phone in the transitions from iPhone (the original) -> iPhone 3GS, and last year from 3GS -> 4. Both sales actually made me enough money to buy the new iPhone with spare change. Where are you selling? When are you selling? How much are you selling it for? Are you passing it off to a family member or friend? If you're selling it, are you going to sell it now or after you get the new one? If before, how are you going to survive without a phone for a while?