How To Fix iPhone Black Screen But Still Works Full Guide If your iPhone screen is completely black but the phone still vibrates, makes sounds, or shows other signs of life, you're likely dealing with a failed OLED display. In this video, I How to fix an iPhone with a black screen that still vibrates and connects to other devices? iPhone 4S isn't turning on : r iphone iPhone Screen Black But Still On: Causes And Fixes If your iPhone screen is completely black but the phone still vibrates, makes sounds, or shows other signs of life, you're likely dealing with a failed OLED display. In this video, I