Not every app supports File Sharing, but app developers who want to provide their users with easier access to their data tend to enable it. Use File Sharing to examine files on an iOS device So what do you do if your data was on one of these apps and you want access to it? There are two approaches for getting files from discontinued apps: using 'File Sharing' to access directly on the iOS device, and by rootling through an iOS backup.
In particular, there are some common causes for this:
Each new version of iOS and new release of Apple hardware can result in apps being left behind, and no longer working on recent devices.
