It’s easy to take a screenshot on your iPhone, iPad, or iPod Touch. This way you can, as comparable to a laptop or desktop, take a screenshot of that which is currently displayed on your screen. This way you can make a simple screenshot of the iOS home screen or a screenshot of a particular app.
The making of a print screen is done as follows.
Press simultaneously the round home button and the Sleep / Wake button on top of the iPhone or iPad. You will see that the screen will flash and a sound can be heard that is equal to when you take a photograph. The print screen will then be added to the library.