I have a problem with the notification sound from the Messenger application, Viber ... I've tried all possible system settings, no results ... I can not turn off camera shutter sound, there are no more options in camera settings.. It is look like a problem with Samsung 9.0 generally?
Solved! Go to Solution.
Lol, this post is over two years old, but it solved my problem. Well, to be more specific, it solved my dad's problem. I'm visiting for Christmas, and he mentioned that his Facebook Messenger app had stopped playing the default notification sound when he would get a message. I'd looked at every single notification setting on his phone, uninstalled and reinstalled the app, but nothing worked. Finally, I googled "samsung galaxy note 9 facebook messenger sound not working" and this thread was the 4th search result. Sure enough, he had the Clean Master app installed on his phone. I uninstalled it and he now has sound with his Facebook Messenger notifications again. Thank you for your suggestion!