Our smart phones offer up-to-date navigation where cell coverage exists. We bring an old outdated GPS navigation devise to fill in the voids as needed, but our primary backup is a paper Rand McNally Atlas. I am not sure we would bring a GPS navigation devise if we had not already owned an old one.
GPS navigators require expensive updates or subscriptions, a big turn-off for me because the updates can over-load and then drag down the performance of an older devise.
I kind of like that our radio does not have an integrated GPS because outdated electronic gadgets irritate me. I like that the disease is not built into our rig.