Build a dashboard
Goal: one screen with the 3D view, a camera and a joystick.
Tap + → Dashboard and give it a name.
Tap Edit → Widget → RViz. Drag its corner to make it take the top half.
Add a Camera widget and choose the image topic; place it under the 3D view.
Add a Teleop widget next to the camera.
Optional: add Buttons with your most used commands, or Diagnostics in Log mode.
Leave edit mode and drive while you watch.
Widgets snap to a grid and push each other aside instead of overlapping, so you can rearrange them freely. Save the result in a robot profile (Robot profiles) to get it on another phone.