2G: GSM 850 / 900 / 1800 / 1900, 3G: HSDPA 850 / 1900 / 2100, 4G: LTE 700 MHz Class 17 / 1700 / 2100 4.3" AMOLED Capacitive Multi-Touchscreen w/ Nokia ClearBlack display and Protective Corning Gorilla Glass Microsoft Windows 7.5 (Mango), 1.4 GHz Scorpion Processor, Chipset: Qualcomm APQ855 Snapdragon, Adreno 205 Graphics 8 Megapixel Camera (3264 x 2448 pixels) w/ Carl Zeiss Optics & Dual-LED Flash + Front-Facing 1.3 Megapixel Camera Internal Memory: 16GB, 512 MB RAM (not expandable) ATTENTION: THIS PHONE IS A GSM DEVICE, IT DOES NOT WORK IN CDMA NETWORKS LIKE VERIZON, SPRINT, BOOST MOBILE ETC. !This phone works in all GSM networks (3G 850/900/1900/2100), EXCEPT 3G data in the T-Mobile USA network!GSM 850 / 900 / 1800 / 1900 | HSDPA 850 / 900 / 1900 / 2100 | 16GB storage, 512 MB RAM | Corning Gorilla Glass | 480 x 800 pixels, 4.3 inches (~217 ppi pixel density) | HSDPA, 42 Mbps; HSUPA, 5.76 Mbps | Wi-Fi 802.11 b/g/n | 8 MP, 3264x2448 pixels, Carl Zeiss optics, autofocus, dual-LED flash | 1.4 GHz Scorpion CPU | MicroSIM card support only