Comment by diggan

Yes, I agree. If I'm navigating, then an incoming call shouldn't block the entire screen with the avatar of who is calling, the map has to remain visible at all times. If even one person from Apple would have tested the scenario of "I'm navigating with a map and someone calls me", they'd see how dangerous their current implementation is.

I have had to reject/hang up so many calls because someone calls exactly when I'm trying to figure out where to go by looking at the map. In my mind, what Apple is currently doing should be outright illegal.