Motorola's latest high-end Android smartphone, the Photon, has hit the shelves at Sprint stores for $200 and a two-year contract. Online customers had a head start -- the Photon was available at Sprint's website days ahead of its brick-and-mortar arrival. The Photon runs on Android 2.3 -- Gingerbread -- and works on both 3G and 4G networks. Features include a dual-core Nvidia Tegra 2 processor, a 4.3-inch touchscreen, WiFi hotspot capability and enterprise support. The Photon offers various options, including an HD Station and a full-size wireless keyboard.