Im using vivo v9 for almost a month now and Im very satisfied with it.Vivo V9 Excellent phone. Long battery backup, quick charging, awesome cameras, killer looks, superb screen, smooth operating, light weight and many many more things. Better than OPPO F7 with just single back camera and less in many other features.No heat issues on this phone.It works perfectly even if you’re playing games.You cant fell anything at back of the phoneSCREEN : 6.3 inches ( 1080 × 2280) CAMERAPrimary : Dual: 16 MP + 5 MP, f/2.0, phase detection autofocus, dual-LED flashFeatures : Geo-tagging, touch focus, face detection, HDR, panoramaVideos : 2160p@30fps, 1080p@30fpsSecondary : 24 MP, f/2.0, 1080p.