*Newbie here! Hello, I just bought off ebay an iPhone 4 32gb, brand new. It still has the plastic all over it. I turned it on because I wanted to check it is a 32gb but it says I need a SIM card...is there a way for me to check everything out without putting in a SIM card? Also, I really would rather have a 16gb version and the $100 difference. Is craigslist the best route for this trade? Or, would my best bet be to unlock this phone and sell it for hundreds more on ebay? I got it for $580 total price and see unlocked versions sell for $800-$1100+. Anybody got any tips on how to unlock it to any network? I might be best off trying to make a profit and then buying a 16gb... What do you all think??