I purchased an AT&T unit and unlocked it for use on T-Mo. I registered on the network (actually it did it on its own), went to the T-Mo BIS site and entered my IMEI and PIN. It immediately sent service books which contained all of my email account informaiton. I have one Web icon which when selected, displays the AT&T death star splash screen and then connects to T-Zones. The T-Zones menu is pretty basic (no fancy graphics) but it works and allows you to "Go To" any web address.
I then loaded Opera Mini OTA and am off and running. I also did change my AP to wap.voicestream.com.
Here are the service books I have loaded:
my
(CICAL)
my
(CMIME
Provisioning [PROVISIONING]
IPPP for BIBS [IPPP]
BFFS1 [BBIM Config]
BBFS2 [YHO]
T-Mobile USA WAP Transport [WAP]
MMS Config [WAP]
Wap Push Config [WAPPushConfig]
E-mail setup [BrowserConfig]
T-Mobile USA WAP BrowserConfig [BrowserConfig]
And from the host routing table:
(bold) T-Mobile USA [31026030]
I am using BIS for email access.