iOS Question Is stable the Background tracking location?

I have a service in my app that tracking location in the background and send it to the server
Now, if the user stops the location service and back to the app, does the location service try to find a location?
Or Do I have to start again the location to listen to a new location?
Look like google map
When location service is disabled, google map does not show user location
But when user enable location service and back to the app, the google map show user location automatically