I got that message today regarding my iPod, which is ancient. It's connected to my 2015 EX-L via USB. I worried that it might be the end of the road for my trusty iPod, but after resetting the iPod, restarting the car, and reconnecting, things went back to normal. You might try rebooting the phone and restarting the car to see if the message goes away. If that doesn't work, I'd try deleting the phone from the devices list and then adding it back. Good luck!