Last time I checked, you can use GPS without carrier. GPS, and GNSS in general, is separate set of satellites. With cellular It’s just more precise since initial triangulation facilitated by cell towers. I recently was mid 5 hours flight and was able to see my location in google maps despite being in flight mode
Last time I checked, you can use GPS without carrier. GPS, and GNSS in general, is separate set of satellites. With cellular It’s just more precise since initial triangulation facilitated by cell towers. I recently was mid 5 hours flight and was able to see my location in google maps despite being in flight mode