我老公的iPhone手机也突然黑屏过，查了网上好像挺常见的，然后按网上步骤来做就自己好了：Press the "Sleep/Wake" button again to turn on the iPhone. If the screen remains black and you don't see the red slider, reset the phone. Press and hold both the "Sleep/Wake" and the "Home" buttons at the same time for at least 10 seconds. When you see the Apple screen, release the buttons.