Launch your DJI FLY app. On the bottom of the home screen there is the word profile. Tap it.
On the left hand side is the panel that shows your DJI account avatar - beneath this at the bottom of the panel is the word more. Tap this.
The screen...
You don't have to select for flight data to be retained.
The flight data is saved by default without you selecting anything.
The answer or enough data to help find it is in your recorded flight data.
You have a couple of options ...
1. Go to...