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.Display: 4.7 inches Retina IPS LCD capacitive touchscreen w/ Ion-strengthened glass oleophobic coating Resolution: 750 x 1334 pixelsMemory: 256GB 2GB RAMMain Camera: 12 MP f/1.8 28mm (wide) PDAF OIS w/ Quad-LED dual-tone flash HDR - Selfie Camera: 7 MP f/2.2 w/ Face detection HDR panoramaSensors: Fingerprint (front-mounted) accelerometer gyro proximity compass barometer Siri natural language commands and dictationWi-Fi 802.11 a/b/g/n/ac dual-band hotspot - Bluetooth: 5.0 A2DP LE - GPS: Yes with A-GPS GLONASS GALILEO QZSS - USB: 2.0 proprietary reversible connectorNon-removable Li-Ion 1821 mAh battery (6.96 Wh)Dimensions: 5.45 x 2.65 x 0.29 in Weight: 5.22 oz