I Using this mobile Oppo A 37 f since 6 month and now also it is in good condition.This phone provides good and various different type of futures which will help you to secure your file, document, photo, video. And also have gestures feature which is useful in urgent situations.Both rare and front camera quality is good and Hard disk.The camera has so many feature like u make graphics inter change format, video in hard disk quality and also so many editing feature is also available like if u have I phone. the sound and quality of this phone good. mostly many of mobile user sees the battery backup so do not think about it. its battery consumption is according to you.How much you are working on internet.Oppo A 37 f is good phone you can buy