So I am still in the process of setting up my phone when I ran into this issue (at least for me it is) The only thing I want an actual notification sound for is my text messages..I have notifications setup for Twitter, Instagram and FB Messenger but I just want those notifications to appear in the bar silently. I can't seem to figure out how to stop the notification sound from happening for these notifications too. In the notification sound area in settings there is no option for silent. I get way too many social media notifications for there to be a sound every time.