Not getting notification when a text is sent to my galaxy s9+

[Android Central Question]

This samsung s9+ seems to have a number of issues. One I am having is it will not sound or show me when I receive a text. I have to keep checking to see I'd I received one???

 

[B. Diddy]

Welcome to Android Central! Is this only when the phone is idle, or also when you're actively using it?