BLU D510 Studio 5.3 Unlocked Phone with Dual SIM Card Support, 5 MP Camera, and MicroSD Card Slot--US Warranty (Black) This unlocked cell phone will work on GSM carries like AT&T and T-Mobile. Not all carrier features may be supported. Unlocked Dual SIM Quad-Band GSM cell phone compatible with 850/900/1800/1900 MHz (Both SIMs) and GPRS/EDGE data capabilities. Dual SIM Card support; Social Networking Capabilities; 5MP Camera, 2592x1944 pixels; VGA Secondary Camera; GPS with A-GPS support; SMS(threaded view), MMS, Email, Push Email, IM; MicroSD Card Slot expendable up to 32GB. Wi-Fi 802.11 b/g, Wi-Fi hotspot; MP3/AAC/WMA/WAV player; MP4/DivX/XviD/WMV/H.264/H.263 player; 3.5mm Audio Jack; Java MIDP emulator; Stereo FM radio; Accelerometer, Gyro, Proximity and Compass Sensors; Standard battery, Li-Ion 2500 mAh. Talk time up to 8 hrs - Standby up to 600 hrs.