Why would you take a screenshot on an iPhone or iPad? For a journalist, the answer is obvious: they use screenshots to illustrate iOS apps and games so you can see what they look like, to show off features in iOS itself, and to illustrate individual steps in tech tutorials.
But screenshots can be also useful for all iPhone and iPad owners. You might use screenshots to show off to your friends: "Take a look at this incredible moment I engineered in the game XCOM," for instance. More practically, you might use a screenshot to show a tech-savvier friend a weird error message that was coming up, or a strange behavior your iPhone was exhibiting, so they can offer advice. The below are 2 ways to help you take screenshot on iPhone or iPad.