Changelogs:
MIUI 9 Lightning fast

New - Deep-level system optimizations(08-07)
New - New icons (08-07)
New - New animations for launching andexiting apps (08-07)
New - Simpler Home screen editing (08-07)
New - Introducing Split screen (08-07)
New - Improved Silent mode triggered by thevolume button (08-07)
New - Improved readability for the startpage of Messaging (08-07)

Highlights
New - Reading mode can turn on and off atsunset and sunrise automatically (05-03)
New - Improved layout and readability forsearch results in Contacts (06-29)
New - Virus scans and payment scans weremerged into Security scan (06-29)
New - Better blocklist rules with thepossibility of separated rules for every SIM card (07-10)
New - Switch for turning Battery saverautomatically when charged (07-19)
New - New display formats for update logsin Updater (07-25)
New - Search for apps in the Dual appssettings (08-03)
New - Mi Picks gets a new name and a newicon! Meet Apps! (08-21)
New - Quick ball goes back to the edgeafter 3 seconds of inactivity (08-30)
Optimization - Cleaner removes emptyfolders better now (07-10)
Optimization - Protection fromunintentional tapping for Dial pad (08-08)
Optimization - Redesigned home page (08-24)
Optimization - Devices with rare Bluetoothprofiles are hidden in the device list (08-29)
Optimization - Simplified and improved thedesign of the virus scan result page (09-07)

System
Optimization - Increased system decryptionspeed (06-23)
Optimization - Devices with rare Bluetoothprofiles are hidden in the device list (07-25)
Optimization - Devices with rare Bluetoothprofiles are hidden in the device list (08-29)
Fix - Home screen loaded too slow withAndroid 7.1 (06-23)
Fix - Apps changed Wi-Fi connection statuswithout the user's permission (06-23)
Fix - Developer options couldn't be openedusing Bahasa Indonesia (08-15)
Fix - Music stayed in the Notificationshade after exiting the app (08-15)
Fix - Only Mi TV/Mi Box can be added/shownon Mi Remote app after the update. (08-22)
Fix - WhatsApp force closed in Split screen(08-29)
Fix - Fingerprint sensor works faster now(09-07)

App Lock
New - Added the App lock step beforeunlocking using a new fingerprint for the first time (08-15)
Contacts
New - Improved layout and readability forsearch results in Contacts (06-29)
Optimization - Protection fromunintentional tapping for Dial pad (08-08)
Fix - Contact search didn't work properlyfor Russian and Ukranian (08-29)

Messaging
Fix - Time in Messaging didn't change whenthe system was switched to 12-hour format (08-29)
Fix - Messages with one-time passwordsdisappeared (09-07)
Lockscreen, Status Bar, Notification Bar
Optimization - Notification shade response(07-04)
Fix - Female voice for English (Waiting forWi-Fi) in the Notification shade (11-02)
Fix - Music player stopped working on theLock screen after 10-15 minutes (11-02)

Home screen
New - Animated icons for selected apps inthe default theme (09-01)
Optimization - Folders open faster (07-10)
Optimization - Users can set their mainHome screen in the editing mode (08-29)
Optimization - New animation for launchingand closing apps (09-01)
Fix - Couldn't close Recents in some cases(05-09)
Fix - Issues with icon size for Clock,Calendar, and Weather (05-16)
Themes
Optimization - Redesigned home page (08-24)
Camera
Fix - Brightness jumps to maximum whenviewing photos (09-12)
Fix - Language support issues (09-12)
Optimization - Improved design for Feedback(05-24)
Settings
New - Reading mode can turn on and off atsunset and sunrise automatically (05-03)
New - Search for apps in the Dual appssettings (08-03)
Optimization - Introducing Button andgesture shortcuts (09-15)
Optimization - Media volume can be turnedback on using volume buttons in DND mode. (09-14)
Optimization - Floating notifications arerestricted by default in DND mode. (09-14)
Optimization - Vibration response in DND mode.(09-14)
Optimization - Improved timers forSilent/DND. (09-14)
Fix - Issues with ringtones in dualWhatsApp (05-24)
Fix - Android security patch level wasshown with the wrong date (09-07)

Screen Recorder
Fix - The recording couldn't be playedregularly after the process of recording was stopped by locking the device(05-12)
Optimization - Launching speed (07-01)

Downloads
New - Downloads keep waiting when theconnection is established again in case it was interrupted (09-05)
Browser
Fix - Issues with Urdu (05-24)

Recorder
Fix - Adjustments for Recorder and Secondspace (06-23)
Calendar
New - New cards: Horoscope, News, Cricketnews, and Cricket matches (05-18)
New - Holiday cards for Russia (06-28)
New - Introducing football cards with theinfo about major international leagues and matches (08-15)

Blocklist
New - Better blocklist rules with thepossibility of separated rules for every SIM card (07-14)

Cleaner
Optimization - Cleaner removes emptyfolders better now (07-10)

Battery Usage
New - Switch for turning Battery saverautomatically when charged (07-19)

Security
New - Virus scans and payment scans weremerged into Security scan (06-29)
Optimization - Simplified and improved thedesign of the virus scan result page (09-07)

Scanner
Fix - Scanner couldn't work normally(09-12)

Quick Ball
New - Quick ball goes back to the edgeafter 3 seconds of inactivity (08-30)

Other
New - Mi Picks gets a new name and a newicon! Meet Apps! (08-21)
Fix - Google widget disappeared because ofthe Dual apps (06-20)