This update includes improvements to functions as listed below.
The exact changes may differ depending on your device model, country, and service provider.
To get the best from your device, please keep your device up to date and regularly check for software updates.

Galaxy Tab S6 (SM-T865)


Build Number : T865XXU5CUI4
Android version : R(Android 11)
Release Date : 2021-10-05
Security patch level : 2021-09-01
• Following applications or features added: RAM Plus
• Improved usability of the following applications or features: Quick Share, Call, Contacts, Messages
• Overall stability of your device has been improved.
• The security of your device has been improved.

Build Number : T865XXS4CUG1
Android version : R(Android 11)
Release Date : 2021-08-10
Security patch level : 2021-08-01
· The security of your device has been improved.

Build Number : T865XXU4CUE1
Android version : R(Android 11)
Release Date : 2021-05-25
Security patch level : 2021-05-01
• Enhanced Quick Share
- Improve file sharing between Galaxy devices using Quick Share.
• Provide new features for a better camera experiences 
- Enhanced Portrait Viewer : Added Studio, High-Key mono/Low-Key mono, Backdrop effect.
- The performance of Camera has been improved
• Video call
- Supports background effects function during video call via some 3rd party apps.
• Supports “S Pen to text” function.
- Now you can directly input text to the input field with S Pen handwriting.
• The security of your device has been improved.

Build Number : T865XXU4CUC1
Android version : R(Android 11)
Release Date : 2021-04-01
Security patch level : 2021-04-01
• The performance of 360 audio has been improved.
• Overall stability of functions improved.
• The security of your device has been improved.

Build Number : T865XXU4CUB7
Android version : R(Android 11)
Release Date : 2021-03-02
Security patch level : 2021-03-01
One UI 3.1 Upgrade (Android 11)

One UI 3.1 is designed to help you focus on what matters. Our visual redesign has improved the places you visit the most, like the Home screen and quick panel, to reduce distractions, highlight important information, and make your experience more consistent. Performance improvements will help apps run quicker while using less battery power. And One UI 3.1 puts control in your hands with new privacy controls, one-time permissions, and enhanced Digital Wellbeing.



Scroll down for a full list of changes.



Visual design

We’ve refreshed the look and feel of One UI 3.1 in lots of ways, big and small, from new, more consistent icons to smarter organization of the quick panel and notifications. Motion is smoother and more natural than ever, with improved animations and haptic feedback for common interactions. And the interface responds to different screen sizes to provide the best experience on any device, whether it’s a phone, foldable, or tablet.



Improved performance

We optimized One UI 3.1 with enhanced dynamic memory allocation, so apps run faster and perform better. We’ve also restricted background activities to provide better performance and power usage.



Better customization

• New image categories have been added to Dynamic Lock screen, and you can select up to 5 categories at once.

• On the Lock screen, you can add a widget to check your usage time.

• Get an interactive preview when setting a wallpaper.

• Adjusting the Lock screen is easier.

• Add a call background to see a picture or video when you make or receive a call.

• In Samsung Internet, you can reorder and lock tabs.

• Bixby Routines has even more controls to help you automate your life.

• New icons and Lock screen widgets make it easier to find and control your routines.

• Use Digital Wellbeing with separate personal and work profiles.



Enhanced features

Home screen and Lock screen

• Add widgets by touching and holding an app on the Home screen.

• Turn off the screen by double tapping on an empty space on the Home or Lock screen. (Set it up in Settings > Advanced features > Motions and gestures.)

• On the Lock screen, tap the clock area to see widgets like calendar, weather, and music.



Calls and chats

• See conversations separately in the notification panel. Works with Messages and your favorite chat apps.

• Easily remove duplicate contacts stored in the same account in Contacts. The storage period for deleted contacts has been extended from 15 days to 30 days.

• Added the ability to edit multiple linked contacts from a single screen.

• Added Trash in Messages so that recently deleted messages are stored for 30 days.



Pictures and videos

• Take pictures quicker with improved auto focus and auto exposure.

• View, edit, and share pictures and videos more easily from Gallery.

• Find pictures and videos quicker with new search features and categories in Gallery.

• Revert edited pictures to their original versions at any time, even after they’re saved, so you never lose a shot.



Settings

• Settings has a new simpler look and feel. Your Samsung account is shown at the top, and Home screen settings are now easier to access.

• Find the settings you need more easily with new Search features. You’ll get better results for synonyms and common misspellings, and you can tap on tags to see groups of related settings.

• Quick settings buttons have been reduced to provide only the most commonly used features. You can also add buttons to create your own customized quick panel.



Samsung Keyboard

• Increased the number of input languages to 370.

• Made it easier to paste copied images and verification codes from text messages.

• Added emoji and sticker suggestions when you enter a text-based emoticon.

• Reorganized Keyboard settings so it's easier to access frequently used settings.



Productivity

Maintain a healthy balance between work and life by minimizing repetitive and complicated tasks and handling them efficiently.

• New routines will be recommended based on your daily life and usage patterns.

• Bixby Routines provide a setting to return everything to the way it was before the routine ran.

• In Internet, you can hide the status and navigation bars for a more immersive experience and quickly translate webpages.

• You’ll be prompted to block websites that send too many pop-ups or notifications.

• You can browse and select cloud drive files from the file selection screen in My Files.

• You can now delete cache files in My Files to easily free up storage space.

• Events with the same start time are displayed together in the month and list views in Calendar.

• Use your phone or tablet app icon layout in Samsung DeX so you know where everything is.

• Open the touch pad from the navigation bar on your phone or tablet.



Easy media and device control

Media and device control is easier with the improved media panel in notifications. You can see recently used media apps and quickly change the playback device. You can also check Android Auto settings in the Advanced features menu in Settings.



Identify and improve your digital habits

Improved Digital Wellbeing features make it easy to check how you're using your phone or tablet and help you form good digital habits. Check your usage while driving or see weekly changes in your screen time by function at a glance through upgraded weekly reports.



Accessibility for everyone

One UI 3.1 recommends useful accessibility features for you based on your usage. The improved Accessibility shortcut makes accessibility features easier to start and use. You can use the Speak keyboard input aloud feature to get voice feedback of your typing even when TalkBack is turned off.



Stronger privacy protection

You can now let an app access to your microphone, camera, or location just one time. Any permissions that an app hasn’t used in a while will be automatically revoked. You can no longer give apps permission to always see your location in the regular permission popup. To let apps access your location when they’re not in use, you need to go to the location permission page for the app in Settings.



Enhanced connectivity with other devices.

• The tablet can be used as an additional display device to a computer.

• Support Buds auto switching between Galaxy phone and tablet (when using a same Samsung account in both devices).

• Support Samsung Internet and Samsung Notes continuity between devices using a same Samsung account.

• Support Copy/Paste of texts and images between devices using a same Samsung account.

• Support inputs from the tablet keyboard by sharing the tablet keyboard case with a smartphone.



Additional improvements

• In Clock, you can hear the time and preset name of the alarm read aloud when an alarm rings.



Some apps will need to be updated separately after the One UI 3.1 update.



You can no longer use Wi-Fi Direct to send files to other devices. You can use Nearby Share instead. You can still receive files using Wi-Fi Direct.



You can no longer connect to Chromecast using Smart View. You can use Google Home instead.

Build Number : T865XXS4BUA1
Android version : Q(Android 10)
Release Date : 2021-01-13
Security patch level : 2021-01-01
• The security of your device has been improved.

Build Number : T865XXU4BTK2
Android version : Q(Android 10)
Release Date : 2020-11-17
Security patch level : 2020-11-01
• The security of your device has been improved.

Build Number : T865XXU4BTJ2
Android version : Q(Android 10)
Release Date : 2020-10-15
Security patch level : 2020-09-01
• Overall stability of functions improved.

Build Number : T865XXU4BTI1
Android version : Q(Android 10)
Release Date : 2020-09-09
Security patch level : 2020-09-01
Samsung DeX
- Wireless DeX connection support.

Wi-Fi
- If quality information on nearby Wi-Fi routers can be measured, this information will appear as  Very Fast, Fast, Normal, or Slow.
  * This feature can be turned on or off in "Network Quality Information Display" settings.
- When attempting to access a Wi-Fi router with a password, a newly added feature now allows the user to request the password of the Wi-Fi router from someone nearby who is saved in their contact list and has already connected to that router.
  * The "Request Password" button will appear on the Wi-Fi password input screen when you can request a password.

Multi window
- The screen can now be split into 3 section.

The following functions have been added : AR Zone, Edge panel, Voice Recorder, Samsung Galaxy

The security of your device has been improved.

Build Number : T865XXU3BTF2
Android version : Q(Android 10)
Release Date : 2020-06-16
Security patch level : 2020-05-01
• The stability of Quick Share has been improved.
• The security of your device has been improved.

Build Number : T865XXU2BTC7
Android version : Q(Android 10)
Release Date : 2020-04-03
Security patch level : 2020-03-01
One UI 2 upgrade with Android 10

One UI 2 brings you Android 10, with exciting new features from Samsung and Google based on feedback from users like you.
We recommend that you back up your important data to keep it safe during the upgrade.
Some apps, including Calculator, Samsung Internet, and Samsung Notes, need to be updated individually after you update your OS.

Here's what's new.

Dark mode
- Enhanced image, text, and color adjustments for day and night environments.
- Darkened wallpapers, widgets, and alarms while Dark mode is on.

Icons and colors
- Clearer app icons and system colors.
- Improved layouts for titles and buttons to eliminate wasted screen space.

Smoother animations
- Enhanced animations with a playful touch.

Full screen gestures
- Added new navigation gestures.

Refined interactions
- Navigate more comfortably on large screens with minimal finger movement.
- Easily focus on what matters with clearly highlighted buttons.

Accessibility
- High contrast keyboards and layouts for large text have been improved.
- Listen to live speech and display it as text.

Better text over wallpapers
- See text more clearly against wallpaper, as One UI automatically adjusts font colors based on light and dark areas and color contrast in the image below.

Media and devices
- Replaced the SmartThings panel with the Media and Devices.
- Media: Control music and videos playing on your phone as well as other devices.
- Devices: Check and control your SmartThings devices directly from the quick panel.

Device care
- The battery usage graph now provides more detailed information.

Digital wellbeing
- Set goals to keep your phone usage in check.
- Use Focus mode to help avoid distractions from your phone.
- Keep an eye on your kids with new parental controls.

Camera
- Added the ability to edit the modes that appear at the bottom of the screen.
- Provided a More tab so you can quickly access hidden modes from the preview screen.
- Improved the layout so you can focus on taking pictures without the settings getting in the way.

Internet
- Customize the quick menu to get instant access to the features you use the most.
- Get more information from the app bar.
- Install add-ons from the Galaxy Store to get even more features.

Samsung Contacts
- Added Trash feature for Contacts. Contacts that you delete will stay in the trash for 15 days before being deleted forever.

Calendar
- Stickers can be added to a date without creating an event.
- Ringtones can be used for event alerts.

Reminder
- More options are available for repeating reminders.
- Set location-based reminders for a specific period of time.
- Share reminders with your family group and other sharing groups.
- Set reminders for a specific date without an alert.

My Files
- Created a Trash feature so you can restore files if you delete something by mistake.
- Added more filters you can use while searching to help you find things quickly.
- You can now copy or move multiple files and folders to different destinations at the same time.

Calculator
- Added speed and time units to the unit converter.

Samsung keyboard
- A multilingual translation feature has been added.
- A text undo/redo feature has been added.
- You can now search for music in Spotify directly from the keyboard.
- An icon to open Samsung Pass has been added.

Quick Share
- Files can now be quickly and easily shared with nearby Samsung devices using Quick Share.

Music Share
- Music Share now lets you share music with your friends using a Bluetooth audio device.

Samsung Daily
- Bixby Home has been replaced with Samsung Daily.

Build Number : T865XXU2ASL3
Android version : Pie(Android 9)
Release Date : 2019-12-13
Security patch level : 2019-12-01
• The security of your device has been improved.

Build Number : T865XXS2ASK1
Android version : Pie(Android 9)
Release Date : 2019-11-08
Security patch level : 2019-11-01
· Improved fingerprint recognition algorithm
※ For better recognition, we recommend that you remove your fingerprints and register them again.

· The security of your device has been improved.

Build Number : T865XXU1ASJ1
Android version : Pie(Android 9)
Release Date : 2019-10-07
Security patch level : 2019-09-01
· Landscape mode is supported : Samsung Pass, Samsung Flow
· The security of your device has been improved.

Build Number : T865XXU1ASH6
Android version : Pie(Android 9)
Release Date : 2019-08-23
Security patch level : 2019-08-01
· The stability of Camera has been improved.
· The security of your device has been improved.