Originally Posted by SVAuspicious
GPS doesn't use data. In a phone or tablet with built-in GPS the implementation is called assisted GPS (A-GPS). ...
Interesting. Thank you.
Maybe you can clear up, while you're here, why, on my return flight from Florida after helping Melissa deliver her boat, my Garmin app recorded the flight until approaching PHL? I had no external GPS, airplane mode was on. I may have forgotten to turn off "record track" in the Garmin app but without a GPS to connect to, how did I end up with a 1400+ nm recorded track of our flight path? According to Melissa I should not have been able to connect to the GPS used by the plane.