US: T-Mobile plans

[Joe Pfeiffer]

This is addressed to people who have successfully navigated t-mobile's
thicket:  wouldn't it be nice if their web page gave good, complete,
technical information?

Anyway, my reading of their page is that to get web access on the
phone I need to add their "T-MobileWeb"  service, but I don't need
their "T-Mobile Internet"?

The latter clearly includes features I don't need:  unlimited wi-fi
hotspot access, for instance.  But the former mumbles about the
"mobile internet", so I wonder if there's some filtering going on
distinguishing the mobile internet from the whole thing.