It is very irritating noise that is coming with notifications in samsung m31s when it is connected to earphones.
I believe it is a software issue and it is very irritating noise.
Thank you for participating in the Samsung Developer Forum. Make sure you have Samsung compatible earphones. Having said that, this is not the correct forum for end product bug reports, questions or concerns.
I would recommend you post at https://www.samsung.com -> Click on Explore Tab -> Click on Community.
Because end user questions disrupt developer discussion this thread will be removed at some point but I’ll leave it open for a short time in case others have suggestions.
Ron
Samsung Developer Program