Fonts on my iphone are huge and I can't use it. Also the switch off isn't working, so I can't turnthe thing off?

The fonts on my iphone are huge and I can't use it. Also the switch off isn't working, so I can't turnthe thing off?

Factory reset, or let the battery die…

Hold the power button and the home button down until it shuts down and reboots. For iPhone 7 use the volume-up button instead of the missing home button.