
The first thing I did was put my sim in my old phone. It would not send a MMS. So, went to the AT&T website and looked at my services. I had "text messaging for iphone". I changed it to unlimited messaging. ($5/month more)
Tried mms in my old phone again- it worked. So, put sim back in iPhone. Sent one, then had trouble getting green "M". I rebooted and so far, so good- have sent and recieved 4 or 5 pics.
Normal text goes to old inbox though. Also, I am sure hoping that AT&T doesn't charge me for 'iPhone messages' at some crazy rate.
The website still showed my old Samsung as the phone I have, not sure if that has anything to do with it. I rather doubt it.
Still working with no glitch... let me know if this works for you!
Setting are nothing that have not been suggested here hundreds of times, but what I have is:
MMSC: mmsc.cingular.com
Proxy: 066.209.011.032
APN: blank
username: blank
Password: blank
Image size: Maximum
User Agent: Nokia_N95