Reading in the dark? Activate White on Black
Text on the iPhone and the new iPad is crisp, making it easier to read than other device. Thanks to it’s Retina Display technology. Hoever, prolonged reading on these iOS device for
may cause eye strain, specially on a poor lit environment.
If reading email, articles or books on your iPhone or other iOS device during bedtime or in the dark, then you should activate “white on black” accessibility feature available on the current version of iOS. To enable this feature tap the “Settings icon”, hit “General”, then “Accessibility” just below the “International” menu. Turn on the White on Black switch, and your entire screen will be switched to “negative mode” .
The White on Black turns everything to negative displaying the opposite of every color. This may not good for viewing photos or video, but will make your reading experience more pleasant. The problem is you will need to go through the settings menu to activate it manually. However, there’s an easy to to enable Black on White fast, and easy! Thanks to the tripple tap home button function, you can toggle to and from White on Black screen just by tapping the home button three times. To tho this go to the “Settings – General – Accessibility” and select “Black on White” in “Tripple-click home” menu.
With tripple click on home button set to toggle White on Black, you can easily activate”White on Black” when reading through texts, and disable it when you need to look at photos. And yes! you can also do it as a prank. Some people accidentally press the home button three times, and they will be freaked out to see that their screen turns to “negative” mode.

