BLU Studio 6.0 HD D651U Unlocked GSM Dual-SIM Quad-Core Android Phone w/ 8MP Camera - Black (Certified Refurbished) 2G: GSM 850 / 900 / 1800 / 1900 (SIM 1 & SIM 2), 3G/4G: 850 / 1700 / 1900 (HSDPA / HSPA+) 6-inch IPS LCD Capacitive Multi-Touchscreen Android v5.0 Lollipop 8 Megapixel Camera (3264 x 2448 pixels) w/ Autofocus & LED Flash + Front-Facing 2 Megapixel Camera Quad-Core 1.3 GHz Cortex-A7 Processor, Chipset: Mediatek MT6582, Mali-400 Graphics