The update does bring another feature Apple was originally supposed to ship with iOS 12: Group FaceTime.
For iPhone XS, XS Max and iPhone XR user, iOS 12.1 enables depth of field controls in Portrait mode which allows you to take portrait and adjust the level of bokeh after the image has been taken. Apple is making it possible to video chat with up to 32 people at once through this new feature.
In the wake of Apple's iOS 11 release past year, Apple was hit with a barrage of complaints regarding system stability and performance.
Apple also introduced depth control for portrait photos for the new iPhones, at the launch.
iOS 12.1 is out and you can go ahead and download it right away.
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FaceTime will now include the automatic detection of active speakers, displaying also the most prominent speakers on the call as priority. Participants who are not active will appear at the bottom of the screen until they speak.
"FaceTime changed the way people communicate and share important moments, and now with Group FaceTime, it's easy to chat with more people than ever before - from 2 to 32 people". A simple tap also brings a participant front and center. When calling more than one person, FaceTime will show a notification that'll let you instantly join a call without being distruptive, and Apple also says that all FaceTime calls are end-to-end encrypted so that they remain private.
See how the depth control works in the video below.
Apple Watch owners can also install watchOS 5.1 today, which brings Group FaceTime audio calls, new emoji, and a new full-screen "Color" watch face.
iOS 12.1 brings dual-SIM support to the iPhone XS, XS Max and iPhone XR.
Dual-SIM support is something that Apple promised with the launch of the new range of iPhones, and now it's here.
In China, Hong Kong and Macau, the new iPhones have physical slots for a second nano-SIM, but in the rest of the world, it's a virtual eSIM.