Guide to hiding apps on your iPhone. “Folder in a folder.”

Tap and hold an app to enter editing mode. Create a new folder by placing an app on top of another. As soon as the two apps merge to create a folder, quickly drag the existing folder in the newly formed one before it can set. 

Now anytime someone says “can I use your phone?” You don’t have to say “yeah, hold on.” As you scrabble to delete things they shouldn’t see.