When Bluetooth is connected, the set application is automatically activated.
Depending on the setting, you can change automatically to the desired volume.
Depending on the setting, you can activate and switch the application from the volume button or notification area.
+ Launch the application and set usage conditions in the service setting item.
Earphone device is mandatory, be sure to set it.
Start-up application is optional.
If you are using Android 5.0 (Lollipop) or higher, please turn on "Apps whdth usage access".
If you are using Android 6.0 (Marshmallow) or higher, please turn on "Do Not Disturb access".
+ Add widgets to the home screen as necessary.