If you are not the primary line on your ATT phone account, and want to try to add the FAN discount, you can get around this by adding yourself as an authorized user for the retail store. To do this, go to http://www.att.com/wireless and log in (assuming you have created an account). Then click the "My Profile" tab and then scroll all the way to the bottom where it says "Authorized Users - Retail Store". Add the name of the person that will be applying the FAN discount. I did this tonight with my Coca-Cola Enterprises discount (28%!) and was not the primary line, however I added myself previously as a Authorized User. My discount applied on my entire plan, however I thought it was just for the primary line. When I questioned how much the discount would cover off the total monthly bill, I was surprised when the representative said the whole thing. The representative also stated that the discount will apply for iPhone 3G (as others have confirmed). Hope this helps.