Why is my phone changing from vibrate to sound by itself?

[AC Question]

why is my phone changing from vibrate to sound by itself?

My phone would change vibrate to sound even though it is on the table. It would get really annoying at work.

 

[B. Diddy]

Re: why is my phone changing from vibrate to sound by itself?

Welcome to Android Central! Which phone? I've seen a few other posts about this, I think for an LG phone.

 

[sugjavier]

Same thing happens to me now ... It's so annoying at work.

I checked all the settings...do not disturb is not turned on but for some reason, ever since Marshmallow update, I will either make a phone call or receive a Phone call and afterwards it'll go from Vibrate to Sound....this never happened b4 and I'm IT so I know how to check settings etc etc

Anyone figured this out yet?