If the head unit has a gps antenna that comes with it, why i cannot operate the apple maps in carplay without turning on location services inside the phone. It should operate without location services on if it has its own gps antenna.  Any ideas

because it still uses the phones location services and gps. it's my understanding the gps antenna works with the phone's gps to strengthen the signal. is there a reason you don't want to use the location services??

no i was just wondering because the kenwood head unit with the Garmin gps only used the supplied antenna

28 minutes ago, chrisbrn2000 said:

no i was just wondering because the kenwood head unit with the Garmin gps only used the supplied antenna

sounds like you answered your question, the Kenwood from what you're saying has built in navigation, the 4400 does not.........