Xiomi Redmi 3s prime is a budjet phone with best in class features. It has 5 inch screen with excellent resolution of 720x1280 pixels. It comes with Android 6 operating system with a powerful 1.1 Ghz octa core Qualcomm snapdragon 430b processor. It has a superb ram of 3gb with internal memory of 32 gb which is further expandable to 128 gb. No lagging ever observed. Smooth and fast in operation. Camera quality is best in this price range with primary camera of 13 MP and a front selfie Camera of 5 MP. The battery backup is surprisingly excellent with 4100 mah. Along with these, this phone has compass, proximity sensor, accelerometer, ambient light sensor, gyroscope. Best phone with best features.