If there's no important data on it, restore it, once that's done you can click on the iPhone logo, pass the “get started" screen so the iPhone storage and everything pops up, you can turn on the voice option and unlock it from there, tap once on the “press home button to unlock" then double tap it. That's how I got passed it on my iPhone 7. Restored to blank then set up afterwards. Maybe upload your backup to the cloud so you can just use it after? Just don't let the phone timeout and you'll be fine. My first choice was to turn on assistive touch.