There seems to be a whole lot of confusion going on. I'll try to straighten things out.
A) Some people have set the following settings for AT&T to work and it just magically works with the iPhone plan in place:
MMSC: mmsc.cingular.com
Proxy: 066.209.011.032
People say other settings works when they doesn't, but I have tried them all with same result myself, I get 403 errors on them as well.
B) Some people used that same setting and it doesn't work. They have called up AT&T and after saying they switch their SIM card back and forth between the iPhone and another phone (Example Sony W580i) and they can't send MMS pictures when they are using the SIM card in the other phone it it fixes it.
C) Some people have had to jump through even more loops. Some went to the lengths to say they don't have the iPhone to AT&T all together, and switched to a normal data plan and all worked well! However, they loose visual voicemail.
Now that that's all straightened out, I'd like to add I'm a first time SwirlyMMS user with a 3G unlocked iPhone running unlocked firmware v2.1 with AT&T. I also have a Family Plan, with a Family Text, and a Family MMS plan, all of which work on the other phones on our plan. I've been paciently watching in the shadows till I finally jumped for joy in the middle of class today and saw that it was on Cydia. I didn't get back from school until past 7:30pm, and I updated to firmware v2.1 for the occasion of SwirlyMMS as well as I needed to update anyway.
I get it all installed only to find out MMS isn't working once I tried every combination of MMSC and Proxy, and changing my phone's IDENT in the settings as well. I keep getting Foridden 403 error messages. I have yet to call AT&T as their support lines were closed well after I got v2.1 setup. Any suggestions on what to do? I am willing to give up Visual Voicemail, but would like to keep it and use MMS.
I have had a problem with my MMS as well recently. I noticed my friend with a 3G iPhone gets SMS messages informing him of MMS messages, with a URL to view a picture and such, when he recieved MMS's from friends. However, I do not get such messages. I had friends send him and me messages, he gets the notifications and messages and I get nothing. I had a problem with SMS's not working when they first added my iPhone and had to go back the next day, and the guy at the store "reapplied" the family text package and all worked. I went back last week trying to see if they could straighten out the MMS notifications not coming through to no avail and got the usual "iPhones don't do MMS". After convincing the sales guy, he saw that the MMS package would not apply to my phone for some reason, but took it back later and said that it was applied and it should would... so I don't know what state my account is in with MMS but i do not still get these message alerts and MMS with SwirlyMMS isn't working. Related?
Any input it appriciated!
