What every button on your iPhone can do (including hidden features)

Breakthroughs, discoveries, and DIY tips sent every weekday. If you own an iPhone 16 or an iPhone 17, you'll find different buttons around the sides of your smartphone. Older iPhones have fewer, depending on the model, but all of these buttons are multitaskers: They come with secondary functions as well as primary ones. For example, did you know you can use either of the volume buttons to snap pictures when you're in the Camera app? This can make it easier to capture photos, compared to trying to hit the circular button on screen.