Using this smartphone since two years. Best budget smartphone by xiaomi. I root it and upgrade to android marshmallow and what a plenty performance it gives. Good battery life and display quality is also very good. Redmi 1s carrys 8 mexapixels rear camera and a 2 megapixels of HD selfi camera. Camera quality is best in the range. This is the first smartphone of xiaomi which I used and very satisfy by it. Really a excellent phone.