How do I turn off or change notification sounds on Facebook?
To turn your notifications on or off:
1.
Tap 
in the bottom right of Facebook.
in the bottom right of Facebook.2.
Tap Settings & Privacy
, then tap Settings
.
3.
Below Preferences
, tap Notifications
.
4.
Scroll down to Where you receive notifications
, then tap Push
.
5.
Tap the toggle next to Sounds/Vibrate
to turn notification sounds on or off.
Note: You have to allow push notifications on your device before you can turn them off or change the notification sound.
