Something I find really fun when traveling in the car with kids is to give them a paper map and ask them to plan a route a for us to get to our destination. Then when you're driving ask them to follow along and give the directions. Obviously they can't be too young and they're not going to be perfect, but if you have a child around 7-13 they'll probably find this quite fun. Being able to use a map is one of those ski…
I've met people who constantly get completely lost despite the use of the phone.
The issue with the phone is that especially under rain or trees, the position can be off of several hundreds meters, so you have to look around and find yourself on the map, because the phone really has no idea and is just guessing.
The compass thingy also works terribly on android and iphones alike, but for some reason people still think that if the arrow points a certain way, you can actually trust it.