I have a Google USB-C to 3.5mm headphone jack adapter so I can use my wired headphones. On the Samsung OS it worked fine but on iodè OS it doesn’t work. The headphone symbol appears in the status bar but I get no audio at all. I tested it on a friend’s normal Samsung phone and it worked alright so I think iodè OS could be the problem. I get poor audio from the built in audio port and always have so that’s why I use the adapter.
PS, If I go to USB settings it says USB is controlled by connected device.