Apple might have convinced some gullible customers that this was something new. But to the rest of the world variable refresh rate existed for years by then. A

Apple might have convinced some gullible customers that this was something new. But to the rest of the world variable refresh rate existed for years by then. As is with most Apple "inventions". In this case the patent goes back to 1982: https://patents.google.com/patent/US4511892A/en https://patents.google.com/patent/US4511892A/en