Is your GPS device in your smart phone activated? Think about that for a minute...
I have a dumb phone, no GPS. If I did have a phone with GPS, it would be turned off, as I have a much better and bigger GPS unit on my windshield.
It doesn’t matter if you have GPS in your phone. I worked as a contractor to BellSouth Mobility in mid 90’s on a system that would track a phone by cell tower if the phone was turned on. Not as accurate as GPS but it could tell you a lot about where people were going and what cities they went visited.