So I've given thought since I received my 7 on release day and something is telling me to get ac+ for this iPhone (never have before from iPhone 4 through 6s). So since I'm going to bite the bullet, I swear I read somewhere you can sign up online and they'll send a diagnostic text and you go from there. However on apples website you only are given a phone number or told to go in store. Does anyone have the link to do it online? Or am I crazy and made up that existence? Thanks!