Initially taking a screen grab from your mobile phone might seem a bit pointless. But if you're having problems with your phone, or you're unsure how to do something on your handset, it's a great way of 'explaining' what you can see. It's a relatively simple process on Apple's iPhone and it doesn't require any extra software. Here's how

Step one
Hold down the home button and then push the top button. The screen will flash and the an image of what's displayed on the screen will be captured. It'll be stored in your camera roll and can be accessed from here.