Settings
Use Volume keys for media
Set the default action of the Volume keys to control the media sound volume rather than whichever sound type is in use.
1.From Settings, tap 
Sounds and vibration > Volume.
2.Tap Use Volume keys for media to enable this feature.
Media volume limit
Limit the maximum output of the device’s volume while using Bluetooth speakers or headphones (not included).
1.From Settings, tap 
Sounds and vibration > Volume.
2.Tap 
More options > Media volume limit.
3.Tap 
to enable this feature.
•To set the maximum output volume, drag the Custom volume limit slider.
•To require a PIN to make changes to the volume setting, tap Set volume limit PIN.
Ringtone
Customize your call ringtone by choosing from preset sounds or adding your own. Options may vary by service provider.
1.From Settings, tap 
Sounds and vibration > Ringtone.
2.Drag the slider to adjust the ringtone volume.
3.Tap a ringtone to hear a preview and select it, or tap 
Add to use an audio file as a ringtone.
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