BLU Zoey Quadband Unlocked Dual SIM Phone with Camera, Bluetooth and Social Networks GSM Quadband, Unlocked Dual Sim 850/900/1800/1900 1.8-Inch LCD Display, Camera, Bluetooth, GPRS VGA Camera with Flash Social Hub: Facebook, Twitter, Yahoo, Skype Chat Built-in FM Antenna, MP3 Player, MP4 Player 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.