This device is Locked to T-Mobile - Therefore cannot be unlocked or used with any other carrier.Not Compatable with any other GSM Carriers such as: AT&T Walmart Family Plan H2O MetroPCS Simple Mobile Cricket.This phone is only compatable with T-Mobile. WILL NOT WORK with any CDMA Carriers such as Verizon Wireless Sprint Boost Mobile US Cellular.4.7-inch LED-backlit IPS LCD Capacitive Touchscreen 750 x 1334 pixels with Ion-strengthened glass Oleophobic CoatingiOS Apple A9 Chip Dual-Core 1.84 GHz PowerVR GT760612 Megapixel f/2.2 aperture 29mm lens Simultaneous 4K Video and 8MP Image recording + 5 Megapixel Front Camera with f/2.2 aperture 31mm Lens and HDRInternal Memory: 16GB 2GB RAMNon-Removable Lithium Ion 1715 mAh BatteryDimensions: 5.44 x 2.64 x 0.28 inches Weight: 5.04 oz