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 S4 (SM-T830)


Build Number : T830XXS4CUC4
Android version : Q(Android 10)
Release Date : 2021-03-19
Security patch level : 2021-03-01
· Security patch update

Build Number : T830XXU4CTL2
Android version : Q(Android 10)
Release Date : 2021-01-11
Security patch level : 2020-12-01
· The security of your device has been improved.

Build Number : T830XXU4CTJ1
Android version : Q(Android 10)
Release Date : 2020-10-23
Security patch level : 2020-10-01
• The stability of Voice recognition has been improved.
• Overall stability of functions improved.
• The security of your device has been improved.

Build Number : T830XXU4CTG4
Android version : Q(Android 10)
Release Date : 2020-09-21
Security patch level : 2020-08-01
• Improved battery charging algorithm and stability
• The stability of Camera has been improved.
• Overall stability of functions improved.
• The security of your device has been improved.

Build Number : T830XXU4CTF5
Android version : Q(Android 10)
Release Date : 2020-06-26
Security patch level : 2020-06-01
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 : T830XXU4BTB2
Android version : Pie(Android 9)
Release Date : 2020-03-13
Security patch level : 2020-03-01
· The security of your device has been improved.

Build Number : T830XXU4BSJ6
Android version : Pie(Android 9)
Release Date : 2019-11-18
Security patch level : 2019-11-01
· The security of your device has been improved.

Build Number : T830XXU4BSI2
Android version : Pie(Android 9)
Release Date : 2019-09-19
Security patch level : 2019-09-01
· Security patch update

Build Number : T830XXU4BSG4
Android version : Pie(Android 9)
Release Date : 2019-09-05
Security patch level : 2019-07-01
· The security of your device has been improved.

Build Number : T830XXS3BSF4
Android version : Pie(Android 9)
Release Date : 2019-06-28
Security patch level : 2019-06-01
· The security of your device has been improved.

Build Number : T830XXU2BSD1
Android version : Pie(Android 9)
Release Date : 2019-04-23
Security patch level : 2019-03-01
Upgraded One UI for Android Pie

One UI brings you Android Pie, with exciting new features and a whole new look and feel based on feedback from users in Samsung and Google.
We recommend that you back up your important data to keep it safe before the upgrade.
Some apps, including Calculator, Samsung Internet, Samsung Health, Samsung Notes, Samsung Members, and Samsung Pay, need to be updated individually after you update your OS.
Here’s what’s new.

One UI
- Content, settings, and other information have been reorganized to keep you focused on the task at hand.
- Interactive elements have been moved to the bottom of the screen so they're always within reach.
- New designs and features such as Night mode help keep your eyes comfortable.

Notifications
- You can reply to messages directly in the notification panel.
- Image thumbnails are included in message notifications.
- In an app's notification settings, tap the switch once to turn on or off all the notifications in a category.

Samsung Keyboard
- New Unicode 11.0 emojis are available.
- New adaptive theme changes your keyboard look based on the colors of the surrounding app.
- Floating keyboard is available in all apps and has new size and transparency settings.
- You can set a custom touch and hold delay.

Device care (formerly Device maintenance)
- Performance modes are streamlined and integrated into power saving modes.

Settings
- Menus have been reorganized to make settings easier to find.

Samsung DeX
- Continue using your phone while DeX is being displayed on a monitor or TV.
- Use Samsung DeX with supported HDMI adapters. No need for a DeX Station.

Bixby
- Bixby is all new, with a range of improvements and new features.
- Swipe left from the main Bixby screen to explore the latest features and supported apps.
- You can control the Bixby key in settings to decide what happens when you press or double press.
Contacts
- The new drawer menu makes it easier to manage contacts from various accounts.

Camera
- The new Scene optimizer automatically enhances the camera's color settings to fit the scene.

Gallery
- Photo Editor Pro's editing tools have been added to Gallery, so you can make all your edits and touchups without leaving the app.

My Files
- The new storage analysis tool has been added to help you monitor your storage usage and save space.
- You can now show or hide items on the My Files Home screen.

Other improvements and changes

- Access Kids Home on the quick panel.
- Call stickers has been discontinued.
- HEIF images are now supported.

Build Number : T830XXU2ARK4
Android version : Oreo(Android 8.1.0)
Release Date : 2018-12-17
Security patch level : 2018-12-01
· The security of your device has been improved.

Build Number : T830XXU2ARJ3
Android version : Oreo(Android 8.1.0)
Release Date : 2018-11-02
Security patch level : 2018-10-01
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.

Build Number : T830XXU1ARH5
Android version : Oreo(Android 8.1.0)
Release Date : 2018-10-18
Security patch level : 2018-06-01
· The security of your device has been improved.