Every notification is set to off. Phone is on Do Not Disturb. Notification sound continues regardless. No app is shown to have sent a notification. Only by disabling Bluetooth will this stop. Of course, this means that the phone is not able to be used in my car nor will it connect to my home handsets. I've tried several of the 'solutions' I've found through other searches but nothing works.
Closed every app, restarted phone, starting Bluetooth once more...notifications continue. No notifications are turned on yet they continue to chime. Walk me through "revert to official UI, retry Beta version".