Samsung Galaxy S4 I9505 16GB Unlocked GSM 4G LTE Quad-Core Phone - Black 2G: GSM 850 / 900 / 1800 / 1900, 3G: HSDPA 850 / 900 / 1900 / 2100, 4G: LTE 800 / 850 / 900 / 1800 / 2100 / 2600 5-inch Super AMOLED Capacitive Multi-Touchscreen w/ Protective Corning Gorilla Glass 3 and TouchWiz UI Android v4.2.2 JellyBean (upgradable to v4.4.2 KitKat), Quad-Core 1.9 GHz Krait 300 Processor, Chipset: Qualcomm APQ864T Snapdragon 6, Adreno 320 Graphics 13 Megapixel Camera (4160 x 3120 pixels) w/ Autofocus, LED Flash + Front-facing 2 Megapixels Camera Internal Memory: 16GB storage, 2GB RAM + microSD Slot Expandable up to 64GB