Here is a picture of my cellphone with 2 different sim cards in it.
If you notice the original has the CINGULAR on the bottom while the new has the AT&T on the bottom. Do you think that existing CINGULAR customers will have a different Icon than the AT&T in the top left corner of the iPhone?

If you notice the original has the CINGULAR on the bottom while the new has the AT&T on the bottom. Do you think that existing CINGULAR customers will have a different Icon than the AT&T in the top left corner of the iPhone?