Your iPhone's volume buttons serve as an alternative shutter release. Pressing either button can capture photos in various modes, including portrait, traditional, and panorama. Moreover ...

Since the very first iPhone ... the volume buttons. That all changed with the iPhone 15 Pro, and every iPhone since—the mute switch was replaced by something called the Action button.

Step 1: Press and hold the right-side button and either of the volume buttons until the Slide to power off control appears. If you're using an older iPhone, such as a first-generation iPhone SE ...

That might change this fall, as recent rumors suggest that the iPhone 15 Pro will feature a single volume button similar to what we saw on the original iPhone (but with some technological upgrades).

Notably, Apple removed the volume slider from the iPhone lock screen ... the user needs to hold the new Camera Control button on the lock screen and snap a photo to learn more about it.