If you want to take screenshot on your iOS devices like iPhone and iPad then simply follow this article which provides the information about how to take screenshot on your iPhone and iPad simply.
Screenshots can be used to show images from your iPhone or iPad to developers if you may be experiencing a bug in an app you’re using or want to share something with friends or family.
Taking a screenshot is easy, task where you have to do is press and hold the Sleep/Wake button on the top or side of your iPhone or iPad, while pressing and then releasing the Home button. When done correctly, the screen will flash white to let you know a picture was taken.
To find your screenshot, you have to head over to the Photos app and tap Camera Roll. If you’re running iOS 9 or later versions, it will save them in a Screenshot album. Once you’ve found your screenshot you’ll be able to edit or share it.