I accidentally put on guided access before turning my phone off, now I can’t turn off guided access and am unable to reset it as I would need to swipe the button to turn power off. It has also not allowed me to use Face ID to turn it off. Do I just wait for my batteries to die or is there something else I can do to turn it off?
To exit Guided Access session press the side button or the Home button three times (this works if you have set a Guided Access password). For more info, see this Apple Support article.