What if your iPhone screen is broken such that you can't enter the passcode? If some small portion of the touch screen still works, you should be able to use that working section of the screen to slide around in VoiceOver mode; thankfully, you can turn on VoiceOver with Siri while the iPhone is locked. Complete, brand-new white digitizer touch-screen LCD assembly replacement for Apple iPhone 8 – works with all iPhone 8 carriers. Replace your broken, scratched, or non-functioning touch-screen LCD to make your iPhone look and function like new. The repair parts come pre-assembled with the LCD, digitizer touch-screen and frame. Back In Touch With Your iPhone. Your iPhone touch screen is a complex and fascinating piece of technology. I hope this article has helped you if you iPhone touch screen is not working, and I’d love to know which solution worked for you in the comments section below. Thanks for reading!