It is a patch that fixes a bug that enables users to spy on others by activating a FaceTime group call without the consent of the user. What made this bug so serious was how trivial it was to leverage, and Apple had to pull the plug on the feature at the end of the server while it was developing a fix. After iOS 12.1.4 has been rolled out, Apple will switch back to the FaceTime group, but only for those who have applied the update. For all iOS users running iOS 12.1.3 or earlier, Group FaceTime will remain disabled. If you like group calls from FaceTime, this update is a must-have for you (and those you called). This bug, probably the most serious bug affecting iPhone and iPad users, has already led to at least one lawsuit. Apple fixed another FaceTime bug in December with iOS 12.1.1-this was just an annoyance, not a major privacy risk.
HOW TO UPDATE YOUR IPHONE OR IPAD
The recommended way to update your devices is to tap Settings> General > Software update and perform the update. Wi-Fi and your battery will need to be charged above 50 percent or the device must be connected to a charger. Alternatively, if you have enabled Automatic Updates (you can find this setting in Settings> General > Software Update), you can wait until it is downloaded and installed automatically. Or, if you want to do things long and hard, you can connect the iPhone to an iTunes PC or Mac and upgrade from there. Take into account that the download is much larger.)
