This device is Locked to AT&T - Therefore cannot be unlocked or used with any other carrier.Not Compatable with any other GSM Carriers such as: Walmart Family Plan H2O MetroPCS Simple Mobile Cricket.This phone is only compatable with AT&T. WILL NOT WORK with any CDMA Carriers such as Verizon Wireless Sprint Boost Mobile US Cellular.4.7-inch Retina HD LED-backlit Display with IPS Technology 1334 x 750 pixels with Fingerprint-resistant Oleophobic Coating & a IP67 Splash Water & Dust Resistance RatingiOS 10 Chipset: Apple A10 Fusion Chip Processor: Quad-Core GPU: (Six-Core Graphics)Internal Memory: 128GB. 2GB RAM12 Megaixel Camera with f/1.8 aperture Digital zoom up to 5x Optical image stabilization Six‑element lens Quad-LED True Tone flash Panorama (up to 63 megapixels) Sapphire crystal lens cover Backside illumination sensor Hybrid IR filter + 7 Megapixel Facetime Camera with 1080p HD Video Recording Retina Flash f/2.2 apertureWLAN: 802.11a/b/g/n/ac Wi‑Fi with MIMO; Bluetooth: v4.2 A2DP LE; GPS: Yes with A-GPS & GLONASS; NFC: Yes Apple Pay only; USB: microUSB v2.0 Reversible ConnectorNon-Removable 1960mAh Lithium Ion CapacityDimensions: 5.44 x 2.64 x 0.28 inches Weight: 4.87 oz