Are you guys able to go to System Settings>About Phone>Status and read the info there? Mine is all white and seconds later the screen go black and I get an android.phone.com error saying it's stopped working and then I get a "No Service" in the status bar. Can anyone tell me what that could be?
I've used .6b, .13 and .20 in the past and now only use .6b since it was giving me less issues but I just discovered this issue with 2.4.6b now as well.
Google Nexus 5 - 4.4.2 Stock ROM
Dell Venue 8 - 4.4.2 Stock ROM