On page 14 of the phantom four manual, it states "The aircraft cannot avoid obstruction during the Failsafe RTH when Obstacle Sensing system is disabled, therefore, it is important to set an suitable Failsafe altitude before each flight. Launch the DJI GO 4 app and enter “Camera”  and select “MODE > Advanced Settings > Failsafe mode” to set the Failsafe altitude. "
I can't find this setting in the DJI Go 4 app. I'm not sure what it means when it says "enter "camera"". I will appreciate any help. Thanks.

Forget the words ... they are nonsense.
Go into the app settings.
Top of the first page is what you are looking for.
It will only work if you have the drone connected because the setting is stored in the drone itself.

Thanks.

Hi. Thank you for reaching out to DJI Forum. It is good to know that your previous query was answered by Labroides at post #2. If you have further concern or inquiry, please feel free to post it at DJI Forum. Thank you.