Menu->Settings->Wireless Controls->Mobile Networks->Access Point Names->T-Mobile US
I input the following settings:
Name: T-Mobile US
APN: wap.voicestream.com
proxy: 216.155.165.050
port: 8080
Username: Not set
Password: Not set
Server: Not set
MMSC: unchanged from original (
http://mms.msg.eng.t-mobile.com/mms/wapenc)
MMS Proxy: 216.155.165.050
MMS Port: 8080
MMC: unchanged (for me it was 310, I believe it is based on your location)
MNC: unchanged (for me it was 260, I believe it is based on your location)
APN type: Not set
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