I have been running into an issue with my sound, specifically when using headphones or the jack to listen to music in my car, boombox, etc.

Each time I connect to my boombox, only one speaker works; doesn't happen with any other device except this one

When I connect in my car, either the LISTEN icon appears or the connection is not made at all. Again, only with this device.

I never had this problem with any phone I ever had.

Any ideas what could be the trouble?