I understand that this might not be the Thunderbolt issue and I'm sorry if anybody has posted about this. I didnt find it here
But I have lots of 3rd party apps that force closed on me when I am on 4G but if I turned on my Wifi or I'm on 3G area, its working fine.
I found this strange since my internet wifi speed is faster than 4G.
some apps example
Yahoo Messenger.
Flixster Movies
ESPN Scorecenter