Even if they are very similar the AT&T and Verizon iPhone 4s require different cases. There are already many different providers pushing out Verizon iPhone 4 cases, but if you want to stick with a more seasoned branding for these phones, you can go with the always reliable brand Mophie. There may be some of us who say there is no reason to complain about the battery life of our iPhone 4s, but if you are a very heavy 3G user then the Mophie Juice Pack Air which effectively doubles your battery life is always a good way to go. On top of doubling your battery life, it is also compatible with both AT&T and Verizon. This is makes it easy to chose no matter which branding you have on your phone. The Juice Pack Air is expected to come out at the end of the month for $79.99 and it will be released in a black with silver accents with soft-touch red and glossy white colors coming out later on.