Recently purchased a 2015 A4. Having issues with the AMI/MMI. I've purchased two cords now. First was a cheap, Chinese cord that didn't work. Girlfriend thought I could save some money, plugged it in and no dice. Said "cord is not compatible". Fair enough. Went to the Audi dealership, paid dealer price for one, plugged it in, no dice. When I don't have the USB cord plugged in, says "no device connected". When I do, it says "cord or device not compatible". At a loss here, and far from a tech guy. For reference, I have an IPhone 6+....

 

Did you ever resolve this? I'm looking for a cable for my iPhone 6S. Did you ever find one that worked?