Set the Volume
Set the Ringtone volume from a Home screen by pressing the Volume key.
1.From a Home screen, swipe up to access Apps.
2.Tap 
Settings > Sounds and vibration > Volume and drag the sliders to set the default volume for Ringtone, Media, Notifications, and System.
•Tap On/Off to enable this feature.
-When enabled, drag the Custom volume limit slider to set the maximum output volume.
•Tap Set volume limit PIN to prevent changes to the volume setting.Media Volume Limiter
Limit the maximum output of the device’s volume. You can also set a PIN to prevent unauthorized users from changing this setting.
1.From a Home screen, swipe up to access Apps.
2.Tap 
Settings > Sounds and vibration > Volume.
Settings
Ringtone
Choose from preset ringtones or add your own.
1.From a Home screen, swipe up to access Apps.
2.Tap
Settings > Sounds and vibration > Ringtone.3.Tap a ringtone to hear a preview and select it.
–or –
Tap (+; Add from phone to use an audio file as a ringtone.
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