Can you hit the navigate button and see the destination before even starting the trip? I've never even tried that, but it would be real useful so you could decline a destination before starting the trip. That's why I doubt it would work -- Uber wouldn't want you to do that.I think he/she is in the navigation app. Just hit the icon that takes you back to the app. It should be the Uber Icon or the tab on the left side of the screen.
If this is not the case, I am as confused as everyone else.