SD automatically logs flights when airspeed goes above threshold and works fine in flight. When I land I always stop navigation and then backup track logs to cloud from the planes Android tablet, with an Internet connection from the sim card. Most of the time this works fine and I can review the tracks and logbook on another device later.
However sometimes, the track logs don't appear at all or update to the cloud a few days later (or next time I backup to cloud).
I seem to be missing some flight track logs.
Any ideas why?