I'm up to 2 Gb on my iPhone.  How do I clean that up?  

I mean more than the video cache, too.  The flight logs are there.  Should they stay?

Sir, if you want to clean the cache files for more memories, I would recommend you turn on "Clear Cache Automatically" in the general setting. Thanks for your support.  

or if you want to clear them manually, open up DJI Go4 app, go to "Me" then in the upper right corner you have the settings "wheel". tap on it. then you have Clear Cache and you can find several categories..video, photo, etc

delete the videos you don't need and upload photos to a storage online. it will save more space in your phone!

Here is some of good Android cleaner apps

https://kraftymobiles.in/cleaner-app-android-cleaner-booster-android/

Thanks

dj_dread Posted at 2018-2-2 06:31
or if you want to clear them manually, open up DJI Go4 app, go to "Me" then in the upper right corner you have the settings "wheel". tap on it. then you have Clear Cache and you can find several categories..video, photo, etc

The menu button in the upper right corner of the white screen, or the flying screen when you're connected to your drone?
Oh! I see...

Click "me" at the bottom of the white screen. Then there's a settings gear in the top left corner.

mt11519011 Posted at 2019-6-10 02:19
Here is some of good Android cleaner apps

https://kraftymobiles.in/cleaner-app-android-cleaner-booster-android/

Here is another one for Andriod users

https://blackapks.com/en/sd-maid-pro