Microsoft Nokia Lumia 640 LTE RM-1072 8GB 5" Unlocked GSM Windows 8MP Camera Smartphone - Black - International Version No Warranty 8 Megapixel Camera w/ Autofocus LED Flash / Front Facing Camera 5 inch IPS LCD Multi Touchscreen w/ ClearBlack display Protective Corning Gorilla Glass 3 Internal Memory: 8GB / 1GB RAM / microSD Slot Expandable up to 128GB (dedicated slot) Microsoft Windows Phone 8.1 with Lumia Denim / Quad Core 1.2 GHz Cortex A7 Chipset Qualcomm MSM8926 Snapdragon 4 Single SIM 2G: GSM 850 / 900 / 1800 / 1900 3G WCDMA 850/1900/2100 MHz 4G LTE 850/2100/1900 (1700/2100)