Motorola MB520 Bravo Unlocked Phone with Android OS, 3MP Camera, FM Radio and GPS - US Warranty - Black Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin. Android-powered smartphone with 3.7-inch touchscreen display and MOTOBLUR social networking Enabled for AT&T's fast 3G HSDPA network; compatible with AT&T Navigator GPS turn-by-turn directions Wi-Fi networking with free access to AT&T nationwide hotspots; Bluetooth stereo music; microSD expansion to 32 GB; 3-megapixel camera/camcorder Up to 6 hours of talk time, up to 384 hours (16 days) of standby time; released in November, 2010