The question is how do we let Samsung know? I tried calling for support and was told to turn the volume down. They even explained how to get to system sounds but had no comprehension about how 1 app could be louder and I must be doing something wrong.
Oh I am having the same issue. You're not alone. It's so annoying when I comment or like something on FB it's notification sounds is so so loud.
I uninstalled and installed facebook lite and that works better. Plus the fb lite uses less batt power while running in the background just an fyi. Good luck. Much quieter on the lite
It's interesting the Facebook app seems to use system sounds. It won't follow the system settings volume but if you mute system sounds Facebook gets muted.
I just tried Facebook lite as suggested and that is using the media volume setting and is adjustable. If you change or mute the system sounds it has no affect. It's odd one uses system sounds and the other media sound.
Glad I found this thread. I thought I was going crazy. Going to try uninstalling and reinstalling the FB app as that's been the app I've noticed this on.
Just open the FB App, tap the menu button (top right), scroll down and expand Settings and Privacy, tap Settings, scroll down to Media and Contacts and tap that option. In there, you can turn Sounds in the App on/off.