The Camera app on your iPhone, iPod touch, or iPad can take a picture or start a video with a simple tap of the big, round shutter button right on the screen. If you're trying to take a photo or shoot video one-handed, however, or even just depending on your position, even that big, round button can be out of reach. Luckily, Apple also lets you activate the shutter and take a picture or start recording with the volume up button.
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