Now that it's done that, Group FaceTime is back online and available to anyone running the new iOS 12.1.4. Meanwhile, do note that the Group FaceTime will not be available to users that didn't upgrade to the latest version of iOS and macOS.
Over a week ago, it was discovered that 3rd party callers could potentially eavesdrop via FaceTime if they initiate a Group FaceTime without having you to accept the call.
That so-called logic issue, discovered by a teenager in mid-January, burst into the public eye on Jan. 28 and forced Apple to disable the group FaceTime service altogether.
DA Quinn to Request Full Prison Term for Michelle Carter
Carter's lawyers said in an email they are disappointed in the ruling and will consider appealing to the U.S. Carter had been sentenced to 15 months in jail after her conviction but remained free during her appeal.
So if your phone seems sluggish after iOS 12.1.3 upgrade and if you wish to downgrade back to a lower version, it seems you simply can not as Apple has blocked it.
In addition to the macOS and iOS updates, Apple also released Shortcuts 2.1.3 to fix vulnerabilities found in Shortcuts for iOS.
Apple turned off the group-chat feature last week after a 14-year-old boy in Arizona discovered the flaw.
On supported devices, simply open Settings - General - Software Update and follow the onscreen instructions.
Following the release of these patches, the system status page on Apple's website has also been updated to reflect the situation. If that option is grayed out, make sure you're connected to a Wi-Fi network and/or start charging your device.