The following are the steps and settings to setup 3G, GPRS, and MMS Settings for T-Mobile USA:
Step 1. Setup GPRS connection for T-Mobile network:
Start > Settings > Connections (tab) > Connections > Advanced (tab) > Select Networks > New.
Enter the name for the profile (e.g. T-Mobile), then go to “Modem” tab and click “New…”, enter name for the connection (e.g. T-Mobile Data), choose “Cellular line (GPRS, 3G)” in the drop-down menu, click “Next”, the access point should be “wap.voicestream.com”, click “Next”, leave all fields blank on this page, click “Finish”. Now go to “Proxy Settings” tab and select “This network connects to the Internet”.
Click “Ok” all the way out.
Step 2. Setup MMS:
Start > Programs > Messaging > Menu > Tools > Options… > MMS > Servers (tab) > New
Server name: (you name it)
Gateway: 216.155.165.50
Port Number: 8080
Server address: http://216.155.174.84/servlets/mms
Connect via: (the connection you created in step 1)
Sending size limitation: 300K
WAP Version: WAP 2.0
Click “Ok”, set this new entry as default (with a red arrow on the icon).
All done, test your connection.