BLU Tank T190i Unlocked GSM Quad-Band Phone with Dual SIM, VGA Camera, FM Radio, MP3 Player, Flashlight and microSD Slot - White/Pink GSM Quad band, Unlocked Dual Sim 850/900/1800/1900 30 Days Standby-By Battery, 16 Hour Talk Time 1.8" LCD Display, Camera, Bluetooth, Facebook, Twitter 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.