I've seen somewhere that there is a second microphone pickup on the back up top toward the volume rocker. If you look closely, there is a minute cutout on the battery cover right above the volume rocker. If you pop off the back cover, you will notice a small hole in the plastic that has a cloth filter on it along that edge right next to the chrome surround. I think I saw this on a video review sometime right after the device was released. I think it was an unboxing video. Might be, might not.