My Samsung Galaxy S7 turns the volume back up by itself when I mute it at work

[Android Central Question]

My Samsung Galaxy S7 turns the volume back up by itself when I mute it at work. Our phones have to be silent at work and this is very frustrating to the point I just turn it OFF. I've cleared cashe. I've rebooted. I've done everything I know of but it does not resolve this. I see previous posts where this model turns itself up and down by itself !!!

 

[B. Diddy]

Welcome to Android Central! Does this happen when headphones are plugged in? Have you noticed any problems with the volume buttons lately?

 

[Eddie van der Walt]

Have the same problem in Samsung S5, had buttons replaced. Did cache clear & factory reset & problem was sorted. Then did backup restore of apps & problem is back. Use a Volume Lock app to control settings till I can find the app that is causing the issue....