Why is my volume button not working?

[AC Question]

Got my Galaxy S6 two days ago and my volume button to increase volume isn't working anymore. It's not stuck, just doesn't do what its suppose to do when i try to press it. Problem started when i was using an app and the volume suddenly went 100 to 0 by itself. Tried to increase the volume and it wouldn't work. I've tried restarting the phone but that hasn't fixed the problem.(To increase volume doesn't work but to decrease it does)

 

[joanielynn]

I have an Android ZTE and my ringer and volume buttons are not working. I have straight talk through Walmart and this just started happening. The phone is 2 years old. My original camera takes pictures but you can't view them. Please help.

 

[B. Diddy]

Welcome to Android Central! Try booting into Safe Mode, which temporarily disables all 3rd party apps. On most Android devices, while powered on, press and hold Power until the Power Off menu appears. Press and hold the Power Off selection until the Safe Mode prompt appears. Tap OK.

If the problem disappears in Safe Mode, then something you installed is causing the problem. You may have to uninstall apps one by one until the problem disappears. If the problem persists in Safe Mode, then it's more likely to be a hardware or firmware problem. Considering that your phone is 2 years old, I'd lean towards a hardware failure or defect.

 

[kobe bacolod]

Hi ,but before this I just wanted to go straight to the point.My father bought me a new phone cherry mobile omega lite 2 ,I was just so happy about a couple of months it was good and then one day I started to factory data reset it because I download too much apps and I can't connect to play store ,after restarting my phone when I press the volume increase key it didn't work like literally my phone just freeze's like for 3 seconds . Can you please help me whoever you are .mm.just please !!!!!!