I have a Droid X and when I dial a call, the screen goes black and stays black until I remove and replace the battery. I've read a number of threads about the problem. I have reset the phone & wiped the cache with no results. I've set preferences in settings. When I use my bluetooth headset making a call, the screen briefly goes dark, then comes back on to the dialer as the headset is connecting to the call. With headset, no problems, not using bluetooth, screen goes black and stays there. Any ideas?