So, out of the blue my LG G3 decides to give me a white screen with the "Emergency Call" button on the bottom when I wake it up. It won't let me put in my knock code while it's awake or while the screen is black. I can open the camera shortcut and it'll take me to the camera but that's it. Has anyone experienced this and is there a fix? I've tried cycling power, removing battery, etc. I've done everything except a hard reset.