I turn down my ringer to 0, with no vibrate. I leave it on my desk, and when I get a message, I hear the message ding. When I check, the volume is at 2 (i mean 2 levels higher than vibrate).

This is happening several times a day. What could be causing it?

I'm using Android 6.0.1


I figured it out.

It was the "Call Blocker" app from AndroidRock.

The problem went away after I uninstalled the app. To be sure, I reinstalled it, and the problem came back. I tried this about 3 or 4 times to confirm.


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