How do I show Apple Maps turn-by-turn navigation for public transport on my lock screen and Apple Watch?

Solution 1:

  1. Open the Apple Watch app on your iPhone.

  2. Tap My Watch, then tap Maps.

  3. Turn on the alerts you want to receive—Driving, Driving with CarPlay, and Walking.

  4. Turn on Transport option under Show Navigation. If it is ON already, then turn OFF and turn ON again.

    It should resolve your issue.