I am becoming extremely frustrated with my "flagship" Samsung S21. I can not find a way to get notifications (sound or vibration) when someone replies to my message. I send or reply to a message, put the phone down to do work and I get NO INDICATION that the recipient has replied. I finally look at my phone and my wife has replied 15 minutes ago! She usually ends up having to call me. This is real bush-league Samsung. I am not sure what you were thinking -that we would hover over our phones all day waiting for replies. I am not impressed. LHV
Check in Settings > Sounds & Vibration & make sure that you have at least the default Notification Sound & Vibration there.
It's definitely not an issue with the device, just something with your settings that can easily be fixed.
You can also go to Settings > Notifications after you know that you have received a text & click on the Notification for the Text to verify that you have a Notification sound & Vibration enabled for it.
