. This chord became the foundation for various alerts, including the incoming video call ring, which was then deconstructed into shorter "pop" sounds for comments and messages. How to Download the Sound
Here are some direct download links for the Facebook pop notification sound: facebook pop notification sound download
If you want to use the sound already built into the app rather than downloading it: and tap the Menu (three lines). Go to Settings & Privacy > Settings . Tap Notifications under the Preferences section. including the incoming video call ring