Hi friends I am using this mobile from last 3 months sound quality is good battery backup is not so good when I use Internet continue then battery backup is not good it has been discharge in 7 to 8 hours it has been very very brilliant super and clear super amoled screen the build quality of mobile is very good all the sensors work very fine especially fingerprint sensor its 16 megapixel camera gives us sharp and colourful clear pictures even in dark and day light condition in my view this is the best mobile in this price but company need to improve battery backup