This is exactly why you need paper maps. You must be aware at all times of the BIG picture, not just the little bit you see on your phone. Have an atlas or individual maps at all time and check regularly where you are on the map, and what is ahead of you. That includes not only the next city or town, but major intersections, alternative routes if needed, and the lay of the land.... see if you are headed into desert area or forest or mountain, etc.
In other words, maps show you the country through which you are travelling in detail, something most electronic little screens cannot do.
Lifey