Have a fix for the 3G issue with iPad 2 after the 8.* update (and probably any other device since it is a fix based on logic and not Voodoo)…. SOLUTION!
1. Have to have a back-up on iTunes.
2. Disconnect iPad from computer. On iPad erase all content and settings: Settings>General>Reset>erase all content and settings
3. Reconnect to computer when iPad restarts
4. Restore from good back-up
5. Voila - Problem fixed!!
I had literally tried everything else to no avail. At one point I think I danced naked around a fire. Many thanks to Erik - one of the Chief Troubleshooters at Apple. He was stumped too and since I had tried everything else he had me try this. He said sometimes old settings can get sort of "hung up". Whatever the case it is fixed and I am going to move on with my life. I hope this helps all of you! And he was sharing the info with those that need to make a patch.