Is there a fix for those that upgraded to iOS6 and can no longer send or recieve picture messages (mms)? Is this an APN setting problem? How can these settings be changed on an AT&T phone where the option to change them is no longer there?
iPhone 4, iOS 6
Restore off iTunes and Update off iTunes. Should fix your issue
This did not fix my problem.
I have spent hours on the phone with AT&T and Apple and done all the troubleshooting resets (network reset, factory reset, etc). Apple says they've never heard of this problem before. AT&T transfers you to Apple as soon as you mention MMS and iOS 6.
UPDATE: Apple tech had me do the following steps and it fixed the issue (hopefully permanently):
turn off imessage
turn off mms
restart phone
turn on imessage
turn on mms
I was able to send mms to my email account using Edge network. It was super slow but it worked.
Fix for iOS6 MMS issue?
