LTE bands: B2(1900), B4(AWS), B5(850), B12(700), B13(700), B17(700), B18(800), B19(800), B25(1900), B26(850), B66(AWS-3). Works on ALL CARRIERS (ATT, TMOBILE, VERIZON and Sprint) Will not work as a standalone voice device on SPRINT. AT&T customer will need to go to AT & T store or contact AT & T customer care to get the QR code card for activation. 1.5GB(RAM) + 4GB - Stainless Steel, Dual Core 1.15 GHz Super AMOLED Full Color Always On Display, 1.4 inch display, 360x360 resolution Tizen OS, CARRIER MUST SUPPORT ESIM.
