I have the same question, for the following reason:
I seem to recall when I ordered the 5 in 2012 that it was crucial that the shipping address for the iPhone match the billing address on the AT&T account. Or, put another way, they would only ship the iPhone to the address where you received your AT&T bill.
Since I wanted the phone shipped to my work, I change my shipping address with Apple and my billing address for AT&T to my work address. But I certainly don't recall changing the billing address on my credit card as well, and I received the phone just fine at work.
Does that sound accurate, or am I just not remembering that I also had to change the shipping address on my credit card? Because I'm pretty sure I didn't make that change.
M
I just remember that I had to change SOMETHING. I can't remember what it was, or even if Apple still holds that policy. But I don't think I had to change my cc info