iPhone or iPad Crashing to a Black Screen as of Dec 2? Here’s How to Fix
Is your iPhone or iPad crashing repeatedly to a black screen as of December 2? The crash is usually seen by the end user as a sudden appearance of a black screen with a spinning wheel cursor, and then you must enter your passcode to use the device again. If the bug is particularly bad, sometimes the moment you enter the passcode the device will crash yet again, putting it into some sort of annoying crash loop.
If this describes what you are experiencing on an iPhone or iPad, your device is likely being impacted by the odd date bug that has now been patched with iOS 11.2.
In other words, you can fix this problem (or prevent it from happening in the first place) by downloading and installing iOS 11.2 on the iPhone or iPad.