Redmi 4a has unique metal body with 5 inch gorilla glass display.and it runs android marshmallow it is budget mobile and rear camera is 13mp and front facing camera is 5mp.it ram ha 2gb.internal memory 16gb and it has a gyroscope sensor which controls the TV etc.and the camera is phase dedection auto focus.and it has many colours like gold, silver, grey and it has a metal body .and its price is price is just 6000 only.and it comes with snapdragon 450 chipset.overall this is best mobile for all