When inside the chat itself, there is no notification sound for incoming messages. The messages just show visually, with no audio.
But when outside of the chat, or not in the messages app, the sounds occur when messages come in.
This was the case on multiple Samsung phones, and with multiple different messages apps for SMS/MMS/RCS.
Is there a way to solve this? Couldn’t find any solutions after researching
Sounds like you missed out on a booty call.