Use APKPure App
Get Insecure Data Storage (Internal Storage) old version APK for Android
This app stores sensitive data to internal storage how to find learn that.
You can save files to the device's internal storage. Files saved to internal storage are containerized by default and cannot be accessed by other apps on the device. When the user uninstalls your app, these files are removed. The following code snippets would persistently store sensitive data to internal storage.