This applies to my new Galaxy S21. Group texts are now called chat rooms in settings. There is no sound when a group text comes in. The screen will light up briefly, and there will be an icon on the lock screen, and a notification. But no sound. And I cannot set a sound, there's no option in settings.
Help is appreciated. My most important group text is from family who are thousands of miles away. I keep missing it without sound. Using the messaging app that comes preinstalled with the phone.
Having the same issue. Notification sound should be from the person sending the group chat to start with. If i am not looking at phonei missit as it sounds like the notification sound that came with the phone. Not happy