
Just scrolled down a really long list in Notes, or worked your weary way through a ton of emails? Instead of laboriously scrolling back to the top, you can jump there immediately by tapping at the very top of the iPhone's screen.
We'd rank this tip with the double-space full stop: it's reasonably widely known, but for everyone else it's a game-changer.
And it's not just Notes and Mail; tap to top works in most iPhone...