AT&T iOS 6.x MMS enabling on AT&T network with no data plan

[cellulartalk]

Ok, I've seen the tutorials on enabling iOS 6.x MMS with Straight talk using a T-mobile sim card, and seen how to do it with your phone being jailbroken, but I am in a different situation. I have a factory unlocked 3gs, on a standard plan (contract expired) AT&T, with no data plan, running iOS...

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Courtesy of WestNet Wireless
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