iOS 5 is latest release for iPhone with so many new features, now with the help of iOS 5 on your iPhone you can easily click photos without ever touching the display screen. This means without touching the iPhone screen you can click you favorite picture with the least amount of camera shake. The trick is simple to use, all you need a iPhone with iOS 5 and headphone with volume buttons.
See Also: Access Camera from Lock Screen in iPhone iOS 5
So how to use it, just open your iPhone’s camera app, ready your shot, and click the volume up button of your headphone to click the photos. If you have a Bluetooth headset with volume control, it’ll likely work with that, too. Any Bluetooth headset paired with the iPhone can be used in a similar manner to the wired headphones to take a photo.
If you are using the Bluetooth headset, this is perfect for taking photos on trips without having to use a camera app with a timer. Just attach your iPhone to a tripod and use your bluetooth headset volume + button as self timer remote to click the pictures.