I got my new Xperia Z3 today and after it fell off the table twice in half an hour I wondered why. I discovered that the Z3 has a very smooth finish and it creates some type of static electricity pocket and makes the device move if it is put on a smooth surface life a smooth table with a plain peace of paper. this video is not a trick. I kept the screen on so you can see that I am not calling the phone on vibrate.