Comment by dmix

Here's how:

On iPhone or iPad

    Open the Settings app.

    Tap your name, then tap iCloud.

    Scroll down, tap Advanced Data Protection, then tap Turn on Advanced Data Protection.

    Follow the onscreen instructions to review your recovery methods and enable Advanced Data Protection.

On Mac

    Choose Apple menu  > System Settings.

    Click your name, then click iCloud.

    Click Advanced Data Protection, then click Turn On.

    Follow the onscreen instructions to review your recovery methods and enable Advanced Data Protection.