Originally Posted by CincyGeek
Yep. kdross is correct. The $20 unlimited data bolt-on is for Sidekicks only.
Did you call T-Mobile directly?
All I know is that I did call T-Mobile. I did tell them that my device is a Pocket PC Phone Edition. The did tell me that this new wireless Internet access is a replacement for my existing 10MB plan. They did tell me that within two hours my plan would switch from 10MB to unlimited. The did tell me that their Web site has not been updated to reflect the new plan.
Nowhere was the term "hotspot" even mentioned.
They told me in a couple of hours my account would be switched over. If later today I can't connect, I guess we'll know that somebody at T-Mobile made a BIIIIIG mistake.
Another discussion has been taking place here
that seems to confirm this.