Zte N9517 User Manual page 121

Notifications
Tap the Home key >
the display of notifications.
Tap an app to control its notifications. You may turn off its
notifications, allow it to sound in Do not disturb mode, or allow it
to display notifications silently. The available options are
dependent on the app.
NOTE:
The notifications of some apps cannot be turned off. Content
hiding is only available if you have set a pattern, a PIN or a
password as the screen lock.
Sound
Tap the Home key >
different types of volume (see
sound, vibration and mute (see
Mode), set up ringtone and notification sound (see
the Ringtone and Notification
(see Turning On/Off System
> Settings > Notifications to control
> Settings > Sound. You can adjust
Adjusting
Switching to Vibration or Silent
Sound), or select system sounds
Sounds).
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Volumes), toggle
Changing