Alright, this scared me while I was trying to listen to music. I plugged in my earphones and went to my bed when I heard a man talk. I looked around and saw that everything was off so I assumed it was an app of mine but it wasn't. Then I heard it again. It was faint and adjusting the volume didn't do anything. I tried over and over to replicate what I did and I figured it out. On the Lock Screen, tapping the phone screen initiates this static noise. This static is when I am able to hear the people talking but it obviously only happens when they speak. So I just sat there tapping at my phone and I was able to hear them talk. Has anyone else encountered this?