From John C
Do this on a Mac.
Create a note in Notes. Lock it. Add an image to the note. Close and lock the note.
Click on another note.
Click back on the locked note with the image. The image will show, but when you double-click or right-click on the image to open it in Quick View, a Quick View windows opens, but it won’t show the image. You can’t zoom in on the image to make it full screen.
Now on an iPhone, open the locked noted. You can now double-click on the image and zoom in as though viewing it in Preview.