15 Things You Didn't Know Your iPhone Could Do | I knew about maybe 5 or so of these tricks because I (accidentally) figured them out on my own. But this is awesome to keep as a handy reminder of things to do.
Shake to delete text: Did you change your mind about that text you just tapped in? Shake your phone, and an “Undo Typing” box will come up. If you change your mind after you’ve hit Undo, shake your phone again for a handy “Redo Typing” box.