A coworker of mine was just given two Samsung Epic 4G's by her sister. What could i do to these phones to sell them for max profit? They are both in great condition used for 1 month with case and screen protectors. Id even sya Mint condition. I own a Captivate on AT&T and I'm not sure how Sprint works. (The whole no sim card thing) Can I unlock? Can i root? Can i flash new ROMS? What would i do to get good money from them?