Slight oddity here for y'all. Motorola Razr Maxx HD. Android 4.1.2 Issue: Makes a random noise, ONLY WHEN: 1) Setting down 2) Screen unlocked To describe the sound, "dooo badadum" repeatedly until screen is locked or phone is picked up. Not overly concerned about it, been playing around trying to figure out the source, figured I'd let y'all in on the fun. Ideas!? Winner gets an imaginary prize from yours truly!