Verizon uses CDMA, which means the carrier information is hard coded into the cell phone's chip. Verizon iPhones would be no different. If you buy a Verizon iPhone it has to be used on Verizon and cannot be changed. There's no unlocking, nada. That will blow your VeriPhone's resale value. Right now you can sell your AT&T iPhone to anyone in the world because it's GSM and the whole world uses GSM. This opens you up to a whole world full of eager iPhone buyers, thus driving up your iPhone's resale value. Apple knows this and that is why there will never be a CDMA iPhone, ever. CDMA iPhone = worthless no-resale-value customer-confusion-inducing piece of junk.