Yep, attempted and successfully so. It seems to be possible to use the existing sim card, however results have varied. It seems the easiest and only guaranteed way is to go and grab a new sim card from the store. I simply told the associate that i had an original iPhone i wanted to re-activate so i needed an untouched unactivated sim card, they will ring it up as device only type of deal, ask for your number for the receipt, but won't put any info on the card itself.
No worries. That last step deal happened with me as well. Its an automated e-mail designed to be sent when the activation system is finished so you can plug back into iTunes and the computer can trigger the original iPhone to unlock and finally get off that connect to iTunes screen. I never did get off that screen, well i did but i had to jailbreak it and i still got the system sweep to switch me over.
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And finally the system sweep has gotten to me and switched me automatically to the $30 unlimited plan and kept me on the 1500 txts a month as well. insert enthusiastic remark here!
Note: The system sweep automatically put me on the 4s plan, that was kind of it. Also, i first switched my sim back to the 4s on wednesday evening so it took about 5 days to have the system sweep change things for me.
At 7 am got this text:
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And then checked my account on the myATT app and it showed this:
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