IOS save img to FileSystem issue

I published my app to google Play and app store
When I update my app, IOS system would delete the app saved image(save in app not camera).
But android doesn’t have this issue

const VIEWSNAPS_DIR = FileSystem.documentDirectory
await FileSystem.copyAsync({ from: uri, to: VIEWSNAPS_DIR +test.jpg' });

Have anyone encountered the same problem with me?

Hey @babydragon9703111,

What SDK version are you running? Also, what iOS version is your device running?

Cheers,
Adam

I use iphone7 IOS12.4
and SDK is “sdkVersion”: “34.0.0”,