Finally got it!
I took the SIM out of my iPhone 3G and put it in my old Tilt. I was able to make calls and text, but no internet (blank pages only) or MMS. I called AT&T on New Year's, and told them I dropped and broke my iPhone, and that due to the price I wouldn't be replacing it for some time. I told her I am reverting back to my Tilt. She updated her system with the Tilt's IMEI, and had to call tech support for them to do something similar in another system. She said it could take up to 24 hours to become effective, end of call. As of 1/5, still the same problem. My SIM is still in the Tilt at this time. I set up the Unlimited data/Text plan ($50) on my online account. I called back, and the gentlemen said my account needed to be provisioned for MediaNet. He said this affects internet and MMS. He provisioned my account while I took the battery out and back in, and voila, MMS from the Tilt works. I hang up, and put my iPhone SIM back into the iPhone, and SWIRLY worked! It was gratifying to see a status bar while the message was fetched, followed by the picture I sent myself. I logged into my account online today, and it shows my device as an iPhone. It still shows that I have the $50 non-iPhone combo plan, and Swirly still works like a charm. I will post back in a few days to see if the AT&T system sweep knocks me off. I did lose visual VM, but I can live without it.
Edit: Still working as of 1/8/2008! And not on a family plan!
Last edited by OctopusPrime
on 09 Jan 2009, 03:11, edited 1 time in total.