In group FaceTime calls, users will be able to see every face in a grid view. On the other hand, if you want every bit of sound to come through, you can switch to a Wide Spectrum mode. Voice isolation uses on-device machine learning to block out ambient noise and prioritise voices. Voices will be spread out in group chats to sound as though they're coming from speakers' positions on screen. This is said to make people sound like they're sitting in the same room and speaking face to face. Apple says it has made this easier and more spontaneous.To make FaceTime calls feel more comfortable and natural, users can now leverage spatial audio. Starting with FaceTime, global lockdowns and quarantine measures over the past year have thrown light on challenges people face while keeping in touch. One feature that wasn't mentioned in the WWDC 2021 opening keynote presentation, but appeared in a background slide, was Hindi language support for the iOS Quickpath swipe keyboard. Developer previews begin immediately, and a public beta will arrive next month. iOS 15 will roll out to iPhone 6s and later devices in fall this year. There's also new system-wide emphasis on sharing and communication, as well as even more privacy-related features, and new ways to leverage on-device intelligence. Apple has officially unveiled iOS 15, and like many recent rumours and leaks suggested, several far-reaching improvements have come to iMessage and FaceTime.