On the left side of the phone is the ringer switch and volume rocker. Apple did slightly redesign the antenna for the Verizon iPhone. The CDMA antennas are located on the top left and right sides of the phone. As a result, the ringer switch was moved slightly down, so you won't be able to use the bumpers designed for the AT&T iPhone with the Verizon version. New bumpers will be available, but Verizon will not offer them for free with the purchase of an iPhone.