I cancelled an iPhone within the 30 days buyer’s remorse period recently and learned something interesting. Before AT&T will let people who bought their iPhones from Apple cancel service, they want you to return the phone first. They also want proof it was returned. They also want you to print out this proof and take it physically to an AT&T store and show it to them. Returning the phone, I have no problem with. But trekking out to a store to show someone in person a printout of an email?Madness.