iOS has always been famous for the intuitive interface, but it does not mean that there are no hidden and hard to reach options. Describe some of them.
Quick save drafts in Mail app
All unfinished and pending mail, you can instantly submit drafts with a simple swipe down from the mail header. Then at the bottom of the display will show a list of tabs with all the existing drafts that can be managed in the same way as tabs in Safari.
Map zooming with one hand
In the built-in …