Originally Posted by rifleman
Could be a provisioning issue. Go to:
Options>Advanced Options>Host Routing Table
Hit the menu button then select "Register Now". Try this, might help to get all provisioning and service books resent to device.
Thanks for this post. I wasn't able to send/receive MMS messages in about a week of owning the phone and came across this post after a search and wanted to say thanks for the info because I'm not sending and receiving MMS like a champion again!