We all use our smartphones as cameras, with all Android phones and iPhones packing powerful sensors. We are used to taking photos using the shutter button on the camera button, but did you know that you can also take photos by using the volume button on your headphones? Yes, the earphone volume button can double as a shutter button for your smartphone camera. To do this, first connect your headphones to your phone via a wired connection or Bluetooth, and that's it! Now open the camera app and press the volume button on your headphones to click a picture. You can also hold down the volume button to take pictures in the burst mode.