The arrow is missing or jumpy
Usually the phone's angle or a crowd in between.
- 1Both people need the app open on screen.
- 2Hold the phone upright and sweep slowly left and right.
- 3Crowds block the signal. Step into a clearer spot, switch to the camera view, or flash both screens (shake your phone).
- 4Some phones can't show direction at all; you'll see the distance instead.