@HasSignalBeenHacked thanks for your reply. As I said: usually I read articles first,...
The new link is behind a paywall, but what I can see leads to new questions: Do people really believe, data is lost as soon as I delete something? And this is not even asking about other places where data might be stored. If I delete files, usually they're not physically deleted, only the allocation get's destroyed... and yeah, what typical user does know something like that, I know... (and that is long before clear vs. purge vs. cryptographically destroy like in NIST SP 800-88r2 or such).
And as long as the device is unlocked, the encryption won't help.......
And I know how difficult it is to explain the "basics" of this. So thanks again for the clarification.