I updated my Lumia 1520.3 to 10586.218 yesterday. Since the update I have a very annoying problem. When I receive a call the phone hangs in an infinite ring loop. The screen is frozen at the login screen with no way of turning the ringer off or accepting the incoming call. The only way to stop the ringer is to soft reset the device (volume down - power button). This happened twice today out of 5 received calls. Does anyone else experience this problem or do you have any tips of what could cause this?