How do I screenshot on my IPhone??

What model are you using? if it iPhone 8 or earlier, press the Home button and the Power button at the same time then release,

If you are using iPhone X or later, Press the Volume Up button and the Power button at the same time and then release.

Is my answer useful?

When you finish screenshot-ting, there will be a result of an image floating on the down right side of your screen for seconds, you can edit, draw and crop the image and then press "Done" and press save the image