Add Two Buttons to Your iPhone
Believe it or not, you can actually add up to two additional buttons to your iPhone in a flash. This is because of a new Back Tap feature that Apple implemented.
You can literally tap twice or three times on the back of your iPhone and it will do something like take a screenshot, go to the Home Page, or open the Notification Center.
Here’s how to enable it:
- Go to the Settings app.
 - Scroll down and select Accessibility.
 - Tap on Touch.
 - Scroll all the way down and tap on Back Tap.
 - Choose what you want your Double and Triple Tap to do.
 
Just keep in mind that the back tap can be a bit too sensitive. So if you tap on the front of your iPhone a little too hard, you can actually trigger it.

