My N82 and/or TREO650 works fine...

I had to change the default settings to:

GPRS

wap.voicestream.com

Phone Number to dial: *99***1#

Username and password are all blank

others said they had to do:

change the built in N810 script for Tmobile from internet2.voicestream.com to internet3.voicestream.com


in order for it to work flawlessly...

you might search for all my listing for other tips...