You will be able to enjoy low monthly installments with AT&T Next, and of course, while most carriers have somewhat similar pricing for the same device, here is what AT&T is asking for the iPhone 5s. You will be able to pick up the 16GB, 32GB, and 64GB models for $199, $299 and $399, respectively, while the iPhone 5c will be available for $99 a pop if you are going to settle for the 16GB model, while the larger capacity 32GB model will retail for $199. Not only that, those who want the iPhone 4s will have to fork out a single dollar ($0.99 to be exact), where that will be accompanied by a two-year agreement. [Press Release]