Comment by b3lvedere

4 days ago

"Check it periodically, as it sometimes turns itself back on again after updates."

Ah, so exactly like Microsoft Windows operating systems behave.

And iOS / iPadOS for that matter, after every update

  1. go to Settings -> Account -> iCloud -> See All and verify all are Off. 
  2. go to Storage, for each listed select ’Delete Data from iCloud’