Samsung Galaxy on8 is excellent phone as per its sound quality, fully digital sound .There is no problem in operating, very easy to operate, no special guide line is required for its operating . The design is so attractive and the style is superb . The phone available at very affordable price the feature is very good . The battery quality is excellent last in 30 hr if used continuous . The phone is having full hd Screen Size: 5.5 inches , Speed: 1.6 GHz , Internal Memory: 16GB, 3GB RAM OS: Android 6.0(Marshmallow) .