iphone 8 plus does not ring or make sound when text is received since15.0.2 update

Hey there, and welcome to Apple Support Communities Wayno854,

From our understanding, your iPhone 8 does not ring or make a sound when text is received. We can certainly understand your concern and can help provide some insight.

We recommend checking out this link for more information on how to change your notification settings: Change notification settings on iPhone - Apple Support

Let us know that helps and Kindest regards!