This is anothersecret power of iOS’s accessibility optionsthat doesn’t require jailbreak.
First, you’ll set the triple tap to put a zoom view in effect.
Then you’ll manually change the zoom to normal, and set the low light setting.
A zoom window will pop up on the screen.
Your next step is to triple-tap on the screen with three fingers and a zoom menu will appear.
This will be the low light setting you’ll see when you toggle the home button in the future.
Exit the pop-up menu and go back to the Accessibility menu.
Scroll all the way down.
Hit the Accessibility shortcut option and select “Zoom”.
Try it and see to it it works!
Go to the home screen, then triple-tap the home button to see the screen change brightness.
Check out the video above from Snazzy Labs to see how it’s done and follow along.
iPhone Brightness Button Toggle Hack| Snazzy Labs viaPhone Arena