Samsung Galaxy S II Skyrocket I727 16GB AT&T Unlocked GSM 4G LTE Smartphone - White 2G: GSM 850 / 900 / 1800 / 1900, 3G: HSDPA 850 / 1900 / 2100, 4G: LTE 700 MHz Class 17 / 1700 / 2100 Android v4.1.2 (Jelly Bean) OS, Dual-core 1.5 GHz Scorpion Processor, Chipset: Qualcomm MSM8260 Snapdragon 4.5" Super AMOLED Plus Multi-Touchscreen w/ TouchWiz UI v4.0 8 Megapixel Camera (3264 x 2448 pixels) w/ LED Flash + Front-Facing 2 Megapixel Camera 16GB storage, 1GB RAM + microSD Slot Expandable up to 32GB