How can you determine my DJI Fly app version number?  I have an iPhone app.

Launch the app.

Click on the Me icon at the lower right.

Click on the settings gear in the upper right corner.

At the bottom of the screen you will see the version. Here is mine v4 3.37 (4358)

Sorry I gave you the information from the DJI Go 4 app.

Fly App

Launch app.

Click on profile at the bottom middle.

Click on settings.

On the left side of the screen scroll down to the bottom of the page to see the app version number. Mine is V 1.1.3(88)

DJI Fly v1.1.2(698-googleplay). I am using Samsung Note 10+.  I believe that IOS version 1.1.3.

Just go to the App Store and get the lastest version.