Top button of iPhone 5 does not work. Is there another way to take screenshots?

Is there a app or something else to help take screenshots on my iPhone 5 after my screenshot button has messed up?

Go in Settings >> General >> Accessibility >> AssistiveTouch >> Turn it on

Then a little grey box with a white circle will appear. When you click it, click on Device >> More >> Screenshot

It take a bit of time to take a screenshot, but that's the only other way i know how.