On my log in screen, I use a pin (as I did with my Droid Turbo). On the Droid Turbo 2, if the pin is mistyped, it plays a really annoying sound. I have not been able to figure out how to turn that off. My regular droid never did that, it only had the alert that came on the screen. I REALLY REALLY REALLY need to turn it off. Can anyone tell me how? Couldn't find it with any of the other sounds.