After 15 days of iOS 9.2's release, it seems quite clear that Apple has made a benchmark upgrade from iOS 9. New update showed advancements on devices, delivering better performance and bug fixes. multitasking improvements on iPhone 4s, faster responses for camera and power button on iPhone 6s were clearly noted. Update also rendered smoothly on older devices like iPhone 5s.
Features of the update include improvements on:-
Apple News
Introduced a Top Stories section with the important news updates of the day
Mail drop to send large attachments
Apple Music
A new iCloud shortcut button for downloading playlists and albums from iCloud Music Library
The playlist that got recently changed would be listed on top while adding new songs to the playlists.
View all downloaded songs with the download indicator, next to songs in My Music and Playlists
iBooks
Supports library browsing, iBook Store search or reading books while an audiobook is being played
Introduced 3D touch function to pop pages out of, the table of contents, bookmarks, or even from notes
Camera Adapter
USB Camera Adapter support for iPhone for media transfer from camera
iOS 9.2 release is a much stable version of its predecessor iOS 9 as the former has emphasized fixes that include improved browsing experience with Safari, fixes related to mail attachments, and also added support to the VoiceOver.
Update also houses enhancements for Live Photos, where the application had a tendency to shut down after a backup activity from iCloud. Issues regarding Wallet updates, alerts for Lock Screen and Health app were also addressed. Although the update shows meliorated functions for most apps, Split view limited itself for certain devices and apps.