NETWORKGSM 850 / 900 / 1800 / 1900 – RM-821, RM-820 (2G Networks)HSDPA 850 / 900 / 1900 / 2100 – RM-821, RM-820 (3G Networks)LTE 800 / 900 / 1800 / 2100 / 2600 – RM-821 (4G Networks)DISPLAY SCREEN SIZE AND MODEL4.5 inches IPS LCD capacitive touch screen, 768 x 1280 pixels screen resolution, up to 16m color reproduction (332ppi)PROCESSOR SPEED AND GPU 1.5 GHz Dual-core Krait Processor, GPU: Adreno 225STORAGE32GB Internal memory, 1GB RAM, No card slot (MicroSD card not supported) CAMERA8.0 Megapixels Primary camera (up to 3264 x 2448 pixels, Carl Zeiss optics), supported features include ptical image stabilization, auto-focus, Dual-LED flash1.3Megapixels Secondary Camera for Video CallingOPERATING SYSTEMMicrosoft Windows Phone 8 operating systemSENSORSAccelerometer, gyro, proximity, compassOTHER FEATURESGPU with A-GPS support and GLONASS, Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi hotspot, BATTERYNon-removable Li-Ion 2000mAh battery (BP-4GW)