Today is the Android Q Beta release for those brave enough to jump in head-first with their Pixel smartphone devices. The Android Q Beta release from Google informs on a set of changes that are in this Beta build. Right now we’re running down 10 of the most significant changes to Android this software build offers the average user – such as yourself!

10. Scoped Storage

This feature creates isolated storage sandboxes for app-private files. That means each app has its own folder, basically, protected from the rest of the phone. If you uninstall an app, the files saved by the app in isolated storage are also removed.
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https://www.slashgear.com/android-q-beta-big-feature-updates-10-13569672/