Changing default map app for navigation
I have always just used Apple Maps for navigation. While driving, I simply ask Siri to "navigate to (desired location)". It has always worked. Suddenly today, I asked Siri to "navigate to (desired location)", and Google maps appeared. The Siri voice said it was "navigating using Google maps", but no directions appeared on the screen, no roads were highlighted, and the map didn't give any indication that navigation was active. So, 1) why did the default map change, and 2), how can I change back to Apple maps, or alternately how can I get Google maps to display the directions? And yes, I have done a Google search with no success.
iPhone 15 Pro Max, iOS 18.1.
iPhone 15 Pro Max