Hi all, I got my 5s at the apple store and did a cross upgrade using my wife's eligible upgrade.
All you need to do is give the Genius rep YOUR phone number and tell them that you are doing a cross upgrade. It's seamless and takes 2 seconds.
All you need to do is give the Genius rep YOUR phone number and tell them that you are doing a cross upgrade. It's seamless and takes 2 seconds.