Also many people use their phone as a GPS & map. Is it illegal to clip your phone to your dashboard with the map up?
the phone gps feature does have a voice turn by turn feature as well.
I like the GPS’es built into the rear view mirror with voice. Even though the view is a bit smaller than phone or built in front panel gps’es, the location allows your eyes to stay forward and on the road and to not be forced in glancing even briefly away from the windshield, down or sideways.