1. Start, Settings, Connections, and then tap the Connections Icon
2. Under "My Work Network" tap Add a New Modem Connection
3. Name it Picture Messaging and under Select a modem select (GPRS,3G)
4. Under Access Point Name type: wap.voicestream.com
5. Username, Password, and Domain is left blank and then click Finish
6. Now, go into Proxy Settings and check "This network connects to the Internet" and check "This network uses a proxy server to connect to the internet"
7. Under the Proxy Server box type: 216.155.165.050
8. Tap the advanced button and tap on the HTTP line. Make sure the HTTP settings shows 216.155.165.050:8080. If not, change it.
9. Click the OK button a few times to get out of the settings completely.
These steps worked for me, I hope they work for you
