I checked my features in OLAM today and noticed that my $30 unlimited data plan was gone and I had been switched to the $15 200 mb plan upon activation on my iPhone 4s. I called right away and the CSR had her supervisor add the unlimited plan back. She said some people got switched during the upgrade process and they weren't sure what happened. Glad I caught it before it was too late. You guys might want to check just to be on the safe side.