My droid turbo volume turns up randomly

[AC Question]

I keep my phone on silent and it is constantly turning its own volume up. Sometimes it's after I receive a phone call, sometimes it's after I browse Facebook, sometimes it seems to be random. I've check settings and can't figure it out. It started happening after a system update about a year ago.

 

[B. Diddy]

Welcome to Android Central! Does this only happen with headphones plugged in?