I'd like to upgrade to a new phone with a Tab Small and keep my current $30/mth plan + $2/mth addon for 500MB data. Will I lose my $2/mth 500MB addon when I purchase new phone and add the Tab Small? Just want to confirm because when I was adding the new phone into the shopping cart, it didn't mention that I can keep my $2/mth data addon. I don't see this addon option being offered right now either. Thanks!