UI 2.9.29:
[System]
Fix "after", "half an hour", "hour ago" text problems
Fix boot vibration problems
Fix in some cases, when connected to the U (OTG) disk you cannot save / take screenshots
Fix full-screen mode is not able to see drop-down status bar
[Phone]
New view specific contacts (including unknown number) call records, each record shows the call number (if available)
Optimise anti-disturb call interception, the screen will no longer light up
Fix when using Bluetooth headsets, the call interface display shows unusual problems
Fix SIM card contact name using single quote "'" in name leads to FC errors
Fix T9 search, enter "*" leads to display errors
Fix in some cases, unknown number calls cannot be answered / rejected
Fix in some cases the incoming call does not show caller interface so call cannot be answered or rejected
Fix ringtone and vibration problems
Fix problem with call log not being able to store more than 500 records
[Contacts]
Fix avatar sync to google causes deformation / distortion of avatar(s)
Fix in some rare cases, individual contacts cannot be displayed
[Messaging]
Optimisation of MMS forwarding speed
Optimise viewing of SMS text messages, contact names or numbers which are too long will now scroll to show the full number
Fix long list of recipients in text box, text box text displays as white
Fix mass MMS sending state details
Fix SMS input box, the last line shows some display problems
[Lock screen, status bar and notification bar]
New Variety lock screen picture frame support system to allow use of different picture frames
Fix personalised custom lock screen style does not take effect after being applied
[Desktop]
Fix when deleting preset application and operation is canceled. The icon position displays with errors
Fix in some cases, open app folders flash repeatedly
[Themes]
Fix in some cases cannot display thumbnail wallpaper details page or Browse Pictures
Fix issue where U (OTG) disk is mistaken as SD card storage
[Camera]
New HDR mode progress bar details
Optimise panoramic photo height from 640 pixels to 1280 pixels
Fix restoration of default camera settings
Fix panoramic photos when saved cannot generate a thumbnail preview
[Gallery]
Add Gallery Home option, if no photos listed will give option to open camera
Added beginners guide to using MiCloud storage functions
Fix in some cases two or more duplicate albums are shown
Fix when using MiCloud albums in the albums library may lead to FC errors
Fix MiCloud picture albums when sending pictures, picture display size is shown incorrectly
Fix when clicking to see an enlarged view the more button has some issues
Fix when returning to gallery home screen from an Album page. The title text is overlapped
[Music Player]
Fix problems not being able to play .flac format files
Fix problem being unable to download music via online music interface
[File Explorer]
Fix, rename or create dialogue problems on the text box partial
Fix uncompressed files in the search results page and Favorites folder will lead to FC errors
Fix downloading from MiDrive, the file status prompt will display the wrong information[Compass]
New automatic calibration function added
[Browser]
Repair close tab animation and tab management problems
[Sound Recorder]
Optimise the recording list display
Fix recording cannot be recovered from the status bar cue points to open the list of recordings when the play button is pressed
[Anti-disturb / DND]
New clear black / white list confirmation prompt messages
[Notes]
Optimisation of sharing notes compatibility and support for sharing in or to more applications
[Alarm Clock]
Optimisation when adding a world clock, selection of time zone instead you can select a city. Also added support for Chinese characters, Pinyin and English search
[Video Player]
Interface optimisation of network cache status
Fix pausing video playback will cause problems in some cases
Fix bottom of the menu is blank in portrait orientation mode
MIUI 2.9.21:
[System]
Optimisation, when internal data is no longer mounted, migrate to the the OTG connection U disk
Fix some problems with intermittent phone reboots
[Phone]
New sound settings feature to set dial tone as piano tone (Phone -> Settings -> Other Settings > Dial tone Settings)
Optimisation of emergency call interface interactions
Fix problem when answering calls, the phone still continues to ring
Fix changing network type settings will be lost after phone restart due to settings save failure
Fix Network version of phone when changing the phone SIM card type (CDMA / GSM interchangeable), cell signal display is not shown correctly and other problems answering calls or using the Internet
Fix call interface does not show the contact name
Fix when making call using a Bluetooth headset, the contacts name is not displayed
[Contacts]
Fix "Unknown Caller" will not appear in the "Recent" list of contact numbers
Fix switching between Simplified and Traditional Chinese, may cause contact search problems
[Messaging]
Fix MMS cannot complete sync to MiCloud
Fix multiple texting may cause FC errors
Fix SMS session editor page content interface dislocation issues
Fix network SMS switch sometimes automatically appears as closed / disabled
Fix in some rare cases, when message is sent will lead to FC errors
Fix sending MMS picture, after editing picture, rotation editing change is lost
[Lock screen, status bar and notification bar]
Fix when using standard toggles mode, notification bar switch when clicking on "more" leads to FC error
Fix in some cases, misuse prevention does not take effect after being enabled
Fix in some cases when using GPS, collapsing the status bar is problematic
[Desktop]
Optimise first time loading free desktop information prompts
[Themes]
Fix themes in some interfaces may display unusual problems
When you delete an application from Theme, ringtone does not copy to the ringtones directory
[Gallery]
Optimise album download logic: changed to download thumbnail previews and support for scrolling through items while still downloading
Fix Gallery Home, "photos" narrow thumbnail problems
Fix when selecting full view and clicking the 'share' menu item, modify default system style
[Music]
New feature, manually adjust the lyric speed by dragging up and down on lyrics, allows you to control the lyric speed to sync better to your music
[File Explorer]
New MiDrive function, if the service is not available a prompt will be displayed
Optimise loading speed of SD card folder contents
Optimisation problems, when pulling out SD card. The folder navigation 'path/directory' drop-down menu does not display
Fix problem when browsing, empty folder when you pull out the SD card, the interface displays unusual problems
[FM Radio] [Supported devices only]
Added support for listening to radio in Airplane mode without mobile data connection being active
New, when you unplug headphones a re-insert them, FM will continue broadcast
[Notes]
New batch editing mode, supports deletion of pinned notes
Optimisation in list or grid mode when deleting items
Optimise sticky notes desktop widget style
Optimise support for sharing a note containing a picture
Fix in some cases, notes folder list does not display correctly
Fix problem where the notes folder cannot be renamed
[Other]
Fix Flashlight is unable to be opened
[Video Player]
Optimisation of vertical screen display movie progress indicator
Optimisation of video not playing prompt behaviour
Fix Gallery Desktop widgets cannot open avi files