Take a little flashlight and aim it at the very top of the Motorola Droid above the screen (vertically). You will see on the left side of the earphone, there are 2 "holes". 1 almost looks like a camera or some type of sensor, the other looks like a light or something. On the right side of the headphone, there's another one, then lastly, there's the actual notification LED that flashes. What are those things? Thanks.