How to still take screenshots on my iphone if the top button is broken?

How can I still take screenshots on my iphone if the top button is broken?

Get a screenshot app

Set up assistive touch. Go to settings-general-accessibility-assistive touch. It sets up a circle that you can click on and when you do, three will be a home button you can use on your screen, a sleep button(the top button), and a few other things. Its hard to explain, but if you set it up you will understand.