Your iPhone can work like an Etch A Sketch. Don’t believe me? Try shaking your phone next time you type a mistake. The shaking should clear the screen and let you start again. It doesn’t matter if you’re writing a text message or editing a picture Just give your phone a shake next time you make a mistake.
2. Invert Display Colors to Browse at Night
Want to browse at night without disturbing everyone in the room? Just invert the iPhone display colors — it’s easier on the eyes and you can surf the web and email without waking your spouse and kid.
3. Turn Off Autofocus in a Tap
Autofocus got you down? Are you the kind of photographer who likes to do it yourself? You can turn off your iPhone’s autofocus when the nagging little feature gets in the way. In camera mode, hold the screen until you see “AE/AF Lock.