While most smartphones still lag behind dedicated cameras in image quality they come with a lot more processing power and the ability to install apps. This allows you to do things on the move which, when done with a digital camera, would require a computer, a piece of software and some serious screen time. Android's Photo Sphere feature is a good example - it allows you to stitch individual images into a 360° Photos Sphere and immerse yourself in a scene. Photo Sphere is part of the camera app of Android 4.2 - the latest version, as featured on the Nexus 4 smartphone. We've taken it out and had a play with it, click through to see how we got on.