Xiaomi redmi 3s prime is a very good budget mobile.because this phone has many features in a lowest price.this smartphone has a fantabulus features i.e, it RAM is 3GB, and had a very good processor of 1.1GHz octacore snapdragon 430.its OS is Android 6.0 Marshmallow.its battery capacity is 4100 mah which is Non removable.and had a 13 MP camera with LED flah with face detection and auto focus features.and the sim slot is hybrid.is contains a HD display which is very good and the phone is very stylish and low weight and handy.and the sound clarity is good.