I have Oppo f1 Plus mobile. This sound is noramlly but not good. Yes, it’s user friendly mobile, Processing Speed in very good. Oppo f1 style & Design is very very good. it’s front camera 16 mp and back camera 13 mp. picture Quality of Oppo f1 plus in camera is best in day but fully roughly quality in night. It’s main problem is it’s made by metal so then you charging this mobile than is become very hot. Look of this mobile is professional and styles. value of oppo f1 plus is good.