iPhone 4 T-Mobile USA MMS/EDGE Settings

Add this to your Settings>General>Network>Cellular Data Network
MMS
APN: epc.tmobile.com
Username:
Password:
MMSC: http://mms.msg.eng.t-mobile.com/mms/wapenc
MMS Proxy: 216.155.165.50:8080
MMS Max Message Size: 1048576
MMS UA Prof URL: http://www.apple.com/mms/uaprof.rdf

After entering these settings, I Sent and Received an MMS. I then restarted the iPhone 4.

After restarting, once again go to Settings>General>Network>Cellular Data Network
Internet
APN: internet2.voicestream.com