Originally Posted by
1Aturnleft
If you hold your mobile device to the window, the map should still update according to your flight progress
This is the way. It takes a little while, as when in airplane (sic) mode the phone can’t get its quick fix off the transmitters and must actually use GPS from the satellites. Hence the “hold it up to the window” - so it can see the sats. It works for a quick progress check though.