Something I take for granted… Knowing the little gesture shortcuts you can do with iPhone and iOS. My girlfriend deleted an email and said “CRAP! I needed that!”
I told her “just shake it. Shake your iPhone.” She looked at me suspiciously. I’ve earned that, given that most of the time I am being a mischievous troublemaker with such strange recommendations.
She did it and was blown away when it asked her if she wants to move that message back from Trash.
You can also do that if you delete text, type text, etc. It’s good stuff.