The kind of places I like to vacation commonly have no cell service. The built in GPS works pretty good without cell service. Google/Apple maps fail in this scenario.
I don't buy that. I live and recreate in an area where cell service is bad to non-existent.
I navigate with Google maps all the time. The key is downloading offline maps. I've got multiple states on my phone and they take up surprisingly little space.
I still like my nav in the vehicle because of the larger screen, but I never use it to navigate.
