Samsung B2100 Unlocked Quad-Band GSM Phone with Extreme Anti-Shock and 1.3MP Camera (Orange) This unlocked cell phone is compatible with GSM carriers like AT&amp;T and T-Mobile. Not all carrier features may be supported. It will not work with CDMA carriers like Verizon Wireless, Alltel and Sprint. Unlocked Quad-Band Phone GSM 850/900/1800/1900 with GPRS/EDGE capabilities. Waterproof and shock resistant; stylishly rugged design; outdoor-friendly features; Flashlight and Noise cancellation. Bluetooth; FM radio; 1.3 Megapixel Camera; Video Player and Recording; MP3 player and MicroSD card slot. 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.