The Samsung Galaxy S4 mini features a 4.3 inch touch display with a 540 by 960 pixel resolution, 8GB of internal storage which can be expanded through microSD, an 8 megapixel camera capable of 1080p HD video capture, a secondary HD camera for video calls and is powered by a dual-core processor with up to 2GB of RAM.The Galaxy S4 mini retains the appearance of the Samsung Galaxy S4 and is made of the same material. The Galaxy S4 mini is a reasonable update from the Samsung Galaxy S III mini, with a larger display and the latest version of Android 4.2 Jelly Bean.
source - PhoneArena