The Apple iPhone 4, black, features 8 GB built-in storage capacity to provide ample space to store photos, videos, and files. It runs on the iOS for user-friendly usage. This smartphone is equipped with a 5.0 MP rear camera, so that you can reproduce clear images and store them on its 8 GB memory space. You can use the smartphone all through your work day, owing to its long-lasting 1420 mAh battery capacity. This device is compatible with Sprint, Virgin Mobile, Verizon, Straight Talk, Boost Mobile, Xfinity, TracFone, U.S. Cellular Carriers.