If you connect an Apple CarPlay-compatible iPhone to the system via the front USB, you can use the audio/information screen, instead of the iPhone display, to make a phone call, listen to music, view maps (navigation), and access messages.
Only one navigation system (pre-installed navigation or Apple CarPlay™) can give directions at a time. When you are using one system, directions to any prior destination set on the other system will be canceled, and the system you are currently using will direct you to your destination.