I have an S21 Android version 11….when I pass a certain location near my home my phone changes from vibrate only mode to Full Sound mode. In the last couple of weeks, it has been doing that early in the morning (while I am asleep; it wakes me up) about 230am. I keep it on Do Not Disturb at night. I don’t know why this is happening but its becoming more frequent. Anyone have any ideas/suggestions?