MI 4i 5 inches HD display 13 megapixel camera 2GB RAM 2nd generation Snapdragon 615 operating system Android lollipop 16GB internal there is no external slot however pictures taken in medium too low light so nice and over saturation HDR mode performs well the dual tone LED flash does a good job of lighting up subjects evenly videos captured by the rear camera look decent true colour reproduction is likely of here as well it has 3000mah battery company is design to give one and half days of usage in typical conditions