With the numerous new features [over 200] on iOS 5 , a very useful action was added to the camera app. Now you get a physical key to take photos on your iPhone . With iOS 5 you can can use the volume up keys on your handset and headphone [when connected to the handset] to take pictures .
Other than this , you can now access the phone application right from your Lock Screen . Just double press the home button when you are on the lock screen and you can get direct access to the iphone camera .
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