Apple iPhone 4S runs the new iOS 5, powered by a dual-core A5 powerful processor at an unknown frequency, 7X the graphics performance (than iPhone 4), sporting a 3.5-inch touchscreen Retina display with 640 X 960 pixels of resolution, equipped with 8 megapixels camera with a faster sensor, f/2.4 aperture, 1080p video recording capability with image stabilization & temporal noise reduction, 16GB/ 32GB/ 64GB internal memory storage
