I can't hear a notification anymore when I receive a text message. What happened?

[AC Question]

I have the Samsung Galaxy 6

 

[Tim1954]

There are a few places to twiddle.
Press volume button to get the pop down volume window. Tap the arrow icon in top right corner. Make sure notifications is on full.
Open messaging app, tap MORE, tap settings, make sure notifications is on.
Go to settings... Notifications... Advanced... Find messaging... Tap on it... Look through the settings there, being sure you scroll down to the bottom to more settings.... Try all that and let us know how you did!