The Samsung Galaxy S4 is running latest Android v4.2.2 (Jelly Bean) OS and is powered by A Octacore Exynos 5 Octa 5410 Processor. It also features a PowerVR SGX 544 GPU, 2GB of RAM, 5.0" Super AMOLED capacitive touchscreen plus a 13 megapixel camera for photos and video and a front facing 2 megapixel camera for video chat