Keep the world in the palm of your hand with the Apple iPhone 4s featuring 16GB of built-in storage. This sleekly designed and attractive smartphone has a wealth of features for organizing your life and getting the most out of every day, including the Siri intelligent assistant software, calendars, and alarms, plus the option to download hundreds of useful apps from the App Store. The touchscreen menu system is intuitive, and the 3.5-inch retina display is crisp and clear, with bright illumination for good visibility in any lighting conditions. The iPhone 4s also packs a powerful 8 MP camera, with LED flash and autofocus and with 16 GB of storage, there is plenty of space for saving pictures and recording videos, as well as downloading games and music. This device is locked to AT&T and compatible with Virgin Mobile, T-Mobile, TracFone, Verizon, Straight Talk, metroPCS, Boost Mobile, U.S. Cellular, Xfinity, Sprint, Cricket Carriers.