Only happens every so often, but sometimes when I plug my iphone into the car the CarPlay won’t connect and I have to try again. I notice it most when I do it as soon as the car is started even before the navigation boots up. I am trying to see if maybe the Bluetooth connection is the problem since it also tries to connect to the phone at the same time I usually plug it into the usb. I have a 2017 niro ex with navigation and a mifi certified lightning usb connector. I read in some other threads people have had trouble with usb connection on ipods and usb media drives.