I don't think the screen is the issue for me though. I have two 1520s, one has the vibration problem (looks like last owner replaced screen) and one doesn't (I replaced the screen myself). I then needed to swap the screens on the devices (the one I replaced was third party and had light bleed while the other was OEM with the att logo). I swapped the screens (and even swapped vibration motors, just in case) and the one original without vibration still has no vibration (other one has no problem still). So for me, it looks like a motor issue or Mb issue. Ymmv?