I recently received my S24 Ultra and i plugged my sennheiser ie900 with the official samsung typec to 3,5mm dongle and there is static noise whenever the phone makes a noise like a notification or music is paused and played, for example if i receive a notification there is this hisss before and after for a couple of seconds, if i pause a track you can hear the hiss again for a few seconds and during quiet segments on a track you can hear the hisss/white noise/buzzz.