When you set up a new iPhone, iOS prompts you about some preferences for customizing certain things, such as the theme, access to location services, and Siri. Still, there are a lot of hidden features ...

In the Settings app, go to Accessibility > Touch > Back Tap and choose one of two options: double tap or triple tap. You should see a list of actions you can run by tapping the back of your iPhone, ...

Your iPhone will display a circular frame on the screen with instructions to position your face within it. It's just like ...