22.09.2012 MIUI DE-VERSION v2.9.21 [4.0.3] + Kamera + 3D

[System]
Fix when deleting Xiaomi account from device may lead to FC errors

[Phone]
New settings option to specify contact numbers to automatically record calls when making / receiving calls
Fix vertical answer orientation mode, when an incoming call is received, the call interface displays the information in the wrong locations
Fix when using "*", T9 search returns no contacts
Fix issue with dialed numbers containing "#", are unable to generate call record logs
Fix CDMA phones, when hanging up telephone conference (Group call) may lead to FC errors
Fix in some cases display of English prompt questions layout
Fix ring notification reminder for missed calls may lead to FC errors

[Contacts]
Optimize function to add a new contact entry/s
Fix strange numbers added to a contact group

[Messaging]
Optimization for more than 200 text messages in a session, click the "Show all information" option
Fix in some cases problems with receiving SMS carriers
Fix more than 200 sessions, the latest text message cannot be displayed
Fix in some cases, the new SMS prompt window cannot be closed
Fix in some cases, the SMS application after device restart may lead to FC errors

[Lock screen, status bar, notification bar]
New lock screen Proximity Sensor misuse mode
Fix in some cases, the Variety lock screen frame text elements are missing
Fix Variety lock screen frame-rate, in some cases with masked Pictures Animation result in errors
Fix for when eliminating the status bar notifications will leave large gaps in the UI

[Desktop]
New support for application sent to the desktop as widget, such as sticky notes.
Optimization to increase the logical order of desktop icons

[Themes]
Optimize download speeds to improve online resource list display of thumbnail previews
Fix normal size (480P) theme when used on 720P devices (the theme resource will use adaptive size)

[Gallery]
Fix where you have more than 256 Albums, entering "Album" page leads to FC errors
Fix after picture is taken, the photo does not show in list of photos (intermittent problem)
Fix cropping of a picture leads to sporadic FC errors

[Music]
Optimize loading efficiency of online music song listings
Fix while recording telephone conversation, music app is unable to play music

[File Explorer]
Add Favorites folder files can be batch "deleted"
Optimization "favorites" are no longer displayed in the SD card catalog listing
No network connection Optimization, opening MiDrive will prompt; "no available network" (before Optimization would spend a long time attempting to detect network)
Extracting files via MiDrive leads to FC error
Fix "Archive" folder does not display RAR files

[Browser]
Optimize preset bookmarks, split bookmarks shortcuts into groups


[Sound Recorder]
Fix playback of telephone recording file, the audio file will not stop playback even after stop button is pressed

[Calendar]
Fix in some cases Lunar calendar date display displays incorrect details


[Notes]
Optimization of new note sliding animation efficiency
Optimize grid mode notes fluency
Optimized Desktop sticky notes widget support to allow for adjustment of the widget size
Fix in some cases, long content within notes may lead FC errors
Fix notes backup recovery will lead to the notes folder name appearing as missing (no name)

[Other]
Fix issue "Find device" can't be turned off when there's no SIM card
Fix when using a combination of shortcut keys, screenshot may trigger another system based one-touch operation

[Alarm Clock]
New manual shutdown prompt and automatic boot based on alarm schedule (Sleep-mode / Shutdown alarm clock)


[Video Player][MI-ONE Plus / C1 / S+ Optimizations]
Add a new version of the video decoding system, increased support for different types of video format and also smoother video playback
New video function to allow playback of video content in full screen mode
Added screenshot capture function
Optimization of video playback control interface, and also increase size of return button
Optimize selection of video orientation mode (Rotate or Lock orientation)