Ok, back to point out something that has happened the last two nights. A little right before bed I check my alarm to make sure it's set and for some reason I decided to check sounds after seeing an email pop up in notification bar that I have a sound set to trigger when it comes in. Nothing played. Tried playing music with multi apps. Nothing. Checked my volume settings. All looked normal. Rebooted my phone and the sound came back...
About 30 minutes before this, I was playing music through a Bluetooth connected speaker. Not sure if that is some kind of coincidence that maybe the hand off of sounds back to the speaker on the phone or something isn't quite right.
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