So I was checking phones out this morning online and just for kicks went through the motions of upgrading to Inc4G LT. When I got to the page where you chose the data plan "Unlimited Email & Web for Smartphones (personal email)" was highlighted. I cantinuted to checkout and after I went through everything it showed my Plan details as being "Unlimited Email & Web for Smartphones (personal email)" $29.99. Could it be that I got the upgrade and still was able to keep my Unlimited data?