BLU Neo Energy Mini Factory Unlocked Phone - Black Unlocked Dual Sim Smartphone, Android v5.1 Lollipop 3,000mAh Super battery that last up to 3 days with standard usage 4.0 Touchscreen Display; 2MP Main Camera with LED flash + VGA Front Camera 4GB internal memory 512MB RAM MicroSD up to 64GB, 1.3GHz MediaTek processor GSM Quad Band 3G HSPA+ (850/1700/1900): US Compatibility Nationwide on all GSM Networks including AT&T, T-Mobile, Cricket, Straight Talk, and others