I just tried here too. I actually do have two phones I'm switching between (Treo 650 and Blackberry Pearl) and I want tzones for the Treo, and MMS for the Pearl. I called up, the guy was nice, but he did say they he couldn't add both the Blackberry Feature Enabler (BFE) and TZones to the same account. He also said that even if he overrides it, the system scans for conflicts every day and will automatically remove things that conflict.
So right now my account is voice + 5.99 TMobileWeb (ie. TZones) + 400 TXT. Looks like I'd have to give up tzones to get BFE, or vice versa. Has anyone tried this recently? Does anyone's still work? Some thoughts I had: I could cancel tzones and put on BFE, and then go back. If the BFE is like a service book, maybe it'd stay on my pearl and still allow service?
This is really disappointing... the blackberry internet plan doesn't include TXT messages, so it really is a lot more expensive than just tzones.
One Question: the rep said that the Treo can't use the Blackberry Internet plan. I suspect that the Blackberry plan would enable internet in general, and that the Treo would still be able to use WAP/tzones. Can anyone else comment on this?
EDIT: Nevermind on the last question, found this:
T-Mobile Data - HowardForums Wiki
"Blackberry Plan - ...The internet portion of this service may be used on non-BlackBerry devices as a substitute for T-Mobile Internet..."
So it looks like I can get the Blackberry Internet Plan and use it for my Treo and Blackberry. Still too expensive...