You have to accept something for it to have Merit.
ATT was Cingularly unhelpful, through willful intent, that is, to assign a New Contract to the phone.
Motivation: Profit.
When profit is the ONLY motivation, nothing that impacts that profit, or the ability to bring that profit in, has merit.
If you believe, for ONE SECOND, that they did NOT know, you are dead wrong. Umm, can I interest you a land deal?
The carrier does NOT need the SIM card to identify the phone, and account, and RESPONSIBLE PARTY, and that is the kicker; if they do NOT know WHO to charge, they do NOT put it on the system, and ALL THAT DATA IS TAGGED TO THE SIM ON THE ACCOUNT
A SIMPLE serial number search pulls it all up
Remember, Profit. You cannot make money on what you are not aware of.
Those serial numbers ALONE tie the phone to the account. Want Proof?
Get two phones, one smart, one flip, two SIMS, register at two different offices.
Then swap the SIMS around, and watch how quickly they will DEACTIVATE both SIMS until you straighten it out with them.
It is a CLOSED SYSTEM. They get ALL the information about the device.
AT&T did not brick the phone because they EXPECTED TO MAKE A PROFIT WITH A REACTIVATION.