Hi, Got a new-in-box iPhone4S that was an upgrade from an unrelated account. I had AT&T associate the new SIM (that came with iPhone4S) to my phone (unrelated) number, and also the IMEI. I also called Apple and had them associate the 4S Serial number to my iTunes account. But, whenever I try to activate the 4S, it still thinks it is tied to the original phone number. The SIM inside definitely is tied to my line, because I can take it out and put it in another iPhone4 and makes calls as expected. Put it in the new 4S, and it still wants to activate with the unrelated number. I had the owner of the unrelated number disassociate my IMEI from their account/number, still doesn't work. What other steps could I try?