Can you make an appointment with Apple for them to run a diagnostic test on your product, to see if everything is running fine? I want to take in my iPhone X near the end on the one-year purchase period to see if anything is wrong with it, and get it replaced if nescccary. I also have a MacBook Pro that is reaching the end of its AppleCare in a few months, and want to do the same. Does Apple allow for this? Has anyone actually tried it? Is it worth doing?