i got this from here
From the home screen go to Menu, Settings, Connectivity, Network,
Network Profile, Data Connections, New Profile. Fill in the spaces as
User ID: Leave Blank
Password: Leave Blank
Primary Server: 216.155.165.050
Secondary Server: Blank or all zeroes
Now from the home screen go to Menu, Browser, Settings, Network Profile, New Profile. Fill in the spaces as follows.
IP Address: 216.155.165.050
Access Point: Select the Tzones profile you've created in the last step.
click Save. It should return you to the previous screen with the
heading Network Profile. Select options using the proper softkey and
select activate. There should now be a checkmark next to Tzones.
make sure your settings are correct so far, use the browser's homepage
to test that the settings have taken effect. You should see T-Zones
homepage as you would on any standard T-Mobile phone. If it does not
work, double check your settings and shutdown and restart your phone
and try your browser again.
For some reason I could not
get our phones to work without setting up the browser as well, which is
why I've included this step. Now on to the final step.
the home page select, Menu, Messaging, Settings, Multimedia Message,
Network Profile, Add. Enter the following information.
Profile Name: Picture Messaging
Internet Mode: WAP
Proxy IP: 216.155.165.050
Proxy Port: 8080
Connection: Select Tzones
save and return to the Network Profile in the same menu. Select
Picture Messaging to activate it. There should now be a checkmark next
to Picture Messaging. Now send a test text. If it does not go
through, shutdown and restart your phone and try again. Once
operational, you will have a phone that can use all major functions on
the T-Mobile network including picture messaging, web browsing, and
should also allow downloading of ringtones.