On the product side, things have been a bit of a roller coaster ride as well this year.
Apple's iOS 12.1.2. update was a bug fixing update issued to fix some problems with the iOS 12.1.1 update for users in Turkey, as well as solve eSim issues for users on the latest iPhone generation. Apple's current iPhone, iPad Pro, and Mac computer lineups are the company's best ever, but little problems keep popping up. It's possible that Apple is patching any issues that cropped up since the public launch of iOS 12.1.2, as well as making other behind-the-scenes changes.
Apple iPhone users who upgraded to iOS 12.1.2 are now reporting that the mobile data services are not operational.
In the meantime, if you haven't updated to iOS 12.1.2 at all, you can skip this version and wait for iOS 12.1.3.
As of the first half of December 24, 2018, the company Apple did not respond to massive negative feedback from owners of smartphones iPhone, the wave of which swept Twitter and the official forum of Apple support. Here's one of many examples. However, the update has not been received in a welcoming way as users are now complaining that the latest update has more or less bricked their iPhones. His phone still can not receive cellular data. The issue appears to be quite widespread as it has been raised by users across Asia, Europe, South America and North America. And the bad news is there's no known fix at this time. Those include restarting the phone, updating carrier settings or even resetting the phone as a whole. This iOS released has no security updates, but comes with software tweaks which have managed to address China's "any possible concern" issue which was concerned with Apple's compliance with a court order which banned selling their older iPhone models in China. Apple support has reportedly been telling users to factory reset their phones, but it's unclear if a reset will resolve the issue.