Oppo a 37f work is great compare to other mobile in this rateI am going to about sound reception or quality is best but if we use to with air phone then it is so clear and we talk about the style and design that is so good and charming its available black and white .its work very smoothly and camera is so cool and operating system work is very smoothly .look and style is so attractive and slim we can say after buy this phone has loved this product according to value its good.