Iíve had the droid 2 global for about 2 weeks, received calls just fine. I decided yesterday to root the phone to see what kind of stuff I can do with it. The root went ok, I used Z4root. The next day I get a call, it only vibrated when it should have used a ringtone, and the screen goes black with the exception of the top task bar. Iíve restarted it a few times now, as well as unrooted the phone and still having the same problem. All of my searches have turned up nothing, any advice would be appreciated.