Dual Nano-SIM (4G + 4G) ; 4G LTE & 3G work with AT&T and T-Mobile ; DOES NOT work with Sprint, Verizon, U.S. Cellular and all other CDMA carriers ; LTE compatibility: This is international stock, varies per carrier (ensure to check with your carrier before purchase) Hisilicon Kirin 970 Octa-core (4x2.36 GHz Cortex-A73 & 4x1.8 GHz Cortex-A53) CPU ; 128GB ROM, 6GB RAM ; 4000 mAh battery. Main Camera: Triple: 40 MP (RGB, f/1.8 aperture) + 20 MP (Monochrome, f/1.6 aperture) + 8 MP (Telephoto, f/2.4 aperture), supports autofocus (laser focus, deep focus, phase focus, contrast focus); Front Camera: 24 MP, f/2.0 aperture, supports fixed focal length.

OS: Android 7.1.1 (Nougat), Display: 5.3 inches, IPS LCD capacitive touchscreen, 16M colors, Chip:Qualcomm MSM8998 Snapdragon 835, Memory: 64 GB, 4 GB RAM, Camera: Dual 13 MP, Sensors: Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, barometer. Unlocked cell phones are compatible with GSM carrier such as AT&T and T-Mobile, but are not compatible with CDMA carriers such as Verizon and Sprint. Please check if your GSM cellular carrier supports the bands for this model before purchasing, LTE may not be available in all regions: 2G: GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 , 3G: HSDPA 850 / 900 / 1900 / 2100, LTE: LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 20(800), 28(700), 38(2600), 39(1900), 40(2300), 41(2500).