How To Customize the Triple-Click iPhone Accessibility Shortcut
When you triple-click the iPhone's Home button, a variety of things can happen. This can trigger the magnifier, screen zoom, a type of dark mode, other screen filters and a few of types of touch assistance. You can have a single function activate instantly, or choose from a menu of more than one function.
I wish they would have flashlight as an option. Or they could put some of those options in the control panel.