I am using the phone from last four weeks and the phone is working perfectly the build quality of the phone is nice it comes with a fingerprint sensor which is located on the back panel the performance of the phone is too good the phone comes with 3gb of ram which is enough to run heavy applications The camera quality is also good And the end I would like to say that if you are palnning to buy redmi 3s prime than biy it it is the the best phone in this price range