Hello everyone, i use the DJI Fly app on Android and IOS. Both latest version 1.2.2.
On Android, in the editor under tone, there is a brightness setting. In the IOS app there is NO brightness button under tone. It doen't seem hidden; the buttons just starts with contrast.
If you don't select any option, the slider acts as brightness setting.

Hi! You might be better off posting your question in the 'products' section of this forum.  That is way more active.