hemumikkilineni , Sep 20, 2019 : I'm facing this automatic max volume issue. I had the same problem with my previous OnePlus 5T. As soon as I disconnected my mobile from Bluetooth the media volume goes to max even I'm silent and vibration mode. I always keep the media volume at 0. But it is always going to max without my interference. Not only when Bluetooth is connected and disconnected, it goes to max even after having a phone call( in both cases of using earpiece and loud speaker) or connected to charging or using phone after keeping aside for a while. I have been contacting OnePlus customer support but they are unable to fix this issue. This issue is literally giving me hard time in installment basis 10s of times a day.