You can controk volume settings quickly and easily. There are three ways to control volume 1. Application You can control volume from application. 2. Notification You can control volume from notification. Switch mute state andc change volume at any time. 3. Quick settings tiles By registering the volca tile in the quick settings tile, you can switch mute state from the tile. ※ Quick setting tile function can be used from Android7.0 or later. It works on Android5.0 or later. We also check the operation at latest Android version, so please use with confidence.