Nokia Lumia 822 16GB Unlocked GSM GSM + 4G LTE Windows 8 Smartphone - Black 2G: CDMA 800 / 190 + GSM 850 / 900 / 1800 / 1900, 3G: CDMA2000 1xEV-DO + HSDPA 850 / 900 / 1900 / 2100 4G LTE: LTE 700 MHz Class 13 Microsoft Windows Phone 8 OS (upgradeable to WP8 Amber) 4.3" AMOLED capacitive touchscreen w/ Protective Corning Gorilla Glass 2 and Nokia ClearBlack Display 16 GB, 1 GB RAM + microSD slot expandable up to 64GB