When listening to music via headsets (the ones that came with the phone s20ultra) the volume starts to go up or down on its own. I was to clear cache of Spotify (music app that I listen to when it happens) and it seemed to solve the issue but then it started happening again while I was running. This also happened with my s10+ and I'm reading posts from 2018 about this issue. I dont understand why this issue has not been fixed ? The service center via messenger on FB said to reboot cache so I did that and we shall see. When I asked why is this still an issue and what has samsung done to try and fix a problem that seems to be reoccurring and old... and they said I needed to post on here so someone would read it and take a suggestion. I dont have a suggestion just an expectation that samsung would have fixed this issue since they were aware of it ... I was even told if this keeps happening to go to a service center which is an independent service center who is going to charge me - which is ridiculous to expect a customer to pay to have an issue fixed you were well aware of.