Getting ready to dump VZW in favor of AT&T. I am having a time getting my VZW G2 fully unlocked. So I am considering flipping the VZW version and buying the AT&T version outright. Anything with AT&T smartphones that I should e concerned with??? Do they make any noticeable changes or lock things down??? I know the rear button configuration is different. Well I should say normal like the other two carriers versions. Anything else AT&T does to restrict their smartphones???