I got T-Mobile to enable GPRS ("T-Mobile Internet") on my phone the other day. It works alright with the t68i and the PowerBook. I used Ross Barkman's "modem scripts". With the right script with the magic "use GPRS" commands I just had to choose the correct "CID" and enter "internet2.voicestream.com" as the phone number. I also setup a "Data account" on the phone; I'm not sure I actually needed to do that.
A few odd things:
- The T68i (or OS X) can't figure out to have both AddressBook.app and the PPP connection connected to the phone at the same time.
- I get a 10.x IP address, having a public address would be slightly more convenient.
- The latency is about a billion years. Alright, that's not true but it's around or more than a second. Not fun for interactive connections (understatement meaning: that really fucking sucks).
- I haven't tested the transfer speed, but it seems better than normal GSM data (9600). I was mostly going to use it for interactive connections I don't really mind whatever it is.
I can't figure out if I could use the $10 "T-Zones" service rather than their "Internet" service which is more. I only need web access and ssh. Can they really tell if you use the phone as a modem rather than just use data from the phone? That was what the customer service person told me.