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 Watch4 (SM-R870)


Build Number : R870XXU1GWA3
Android version : R(AndroidWear 11)
Release Date : 2023-01-25
Security patch level : 2023-01-01
• New Camera Controller feature added
Change zoom on your phone camera remotely through pinching in or out on the screen, or through rotating the bezel.
※ This feature is only supported on flagship models released after Samsung Galaxy S20 or Z Flip running at least One UI 5.1.
• Samsung Members
A new “Connected device diagnostics” option has been added to check the proper performance of the Galaxy Watch's battery status, touch screen function, etc. on the connected phone.
※ Please update Samsung Members and Galaxy Wearable app to the latest versions for using the 'Connected device diagnostics' feature.
• Stability and reliability
The stability has been improved.

Build Number : R870XXU1GVK7
Android version : R(AndroidWear 11)
Release Date : 2022-12-06
Security patch level : 2022-11-01
• Watch Face
Newly designed Ball Watch face is added.
• Stability and reliability
Stability codes applied to improve notifications and device behavior.

Build Number : R870XXU1GVK4
Android version : R(AndroidWear 11)
Release Date : 2022-11-10
Security patch level : 2022-11-01
• Improved system stability and reliability
A power operation-related stabilization code has been applied.
※ As errors may occur during the update, please back up any important data before proceeding.
* How to back up : Galaxy Wearable - Watch settings - Account and backup - Back up data

Build Number : R870XXU1GVI3
Android version : R(AndroidWear 11)
Release Date : 2022-10-10
Security patch level : 2022-08-01
• Improved system stability and reliability
Stabilization codes for watch operation have been applied.

Build Number : R870XXU1GVH2
Android version : R(AndroidWear 11)
Release Date : 2022-09-05
Security patch level : 2022-08-01
• Watch Face
Enjoy new and improved watch faces with enriched style and customizable options.
- 6 new watch faces
  (Pebbles, Flower garden, Info Board, Pro analog, Kinetic digits, Gradient number)
- More customizable options added for existing watch faces
  (Dial, Indexes, Character, Color, Complication, Clock type)
- New complications have been added.
• Watch home screen
- Add watch faces as your favorite, make finding and changing watch face easier.
- Explore watch face list to add watch face as your favorite including new watch faces.
• Camera Controller
A feature that allows you to switch between photo and video shooting will be added.
※ Only Samsung flagship models after Galaxy S9 and Note9 with OneUI 4.1.1 or later are supported.
• Input characters
- You can input characters using the QWERTY keyboard and gestures. (Some languages are not supported)
- You can switch between different input mode (keyboard, voice input, and handwriting) during text entry
• Notifications
GIF animation playback of Samsung message notifications is supported.
• Phone, Contacts
When Watch is connected to dual SIM phone,
- The SIM icon used on the phone is displayed the same on the watch.
- If there is no preferred SIM set on the phone, it can select the SIM to make a call on the watch.
- It supports to make calls through other SIMs on the watch even if there is a preferred SIM set on the phone.
• Messages
- The input field is provided in the message threads.
- Through the input field, the recently used input mode is supported.
- Draft messages are kept in the input field.
• Alarm
“Date, alarm name, snooze” settings features are added.
• Voice recordings
Files recorded on the Watch are quickly saved to the connected phone.
• Settings
- Larger sizes for font size settings are supported.
• Accessibility
- Additional auxiliary features for “improving visibility” are supported.
- A “Left and right sound balance” control feature for “hearing aids” was added.
- A “Touch and hold delay” settings feature to aid “Interaction and dexterity” was added.
• Bixby
The “Quick commands” feature, which groups together and runs multiple actions in one command, is supported.

Build Number : R870XXU1FVD4
Android version : R(AndroidWear 11)
Release Date : 2022-05-04
Security patch level : 2022-05-01
• Improved system stability and reliability
Stabilization codes for watch operation have been applied.

Build Number : R870XXU1FVC8
Android version : R(AndroidWear 11)
Release Date : 2022-04-05
Security patch level : 2022-03-01
• Enhanced Samsung Health Function
• Improved system stability and reliability

Build Number : R870XXU1EVB4
Android version : R(AndroidWear 11)
Release Date : 2022-02-24
Security patch level : 2022-01-01
• Improved system stability and reliability

Build Number : R870XXU1EVA8
Android version : R(AndroidWear 11)
Release Date : 2022-02-09
Security patch level : 2022-01-01
• Live Wallpaper Watch face update with Galaxy S22's Wallpaper.
• New Watch faces have been added to match the new bands.
• More customization options, such as colors and clock fonts, have been added to existing Watch faces.
• Provides information on moisture loss and intake required after outdoor running exercises for body balance and exercise efficiency.
• Supports Interval Training for Running and Cycling Exercises. Make a more systematic exercise plan with Galaxy Watch!
• When you're done exercising, the Watch measures your heart rate recovery.
Check with the Galaxy Watch if your heart rate has recovered properly during your break.
• Now you can see your personalized workload when running. Check and adjust your workload in real time (This indicator shows % of VO2 Max value).
• Now you can see the heart rate and the calories measured on the Watch on your phone screen. Use this for safe cycling.
• Now you can set personal goals for your body composition analysis.
Set your personal goals and get tips and badges to achieve them.
• Provides tips and insights for body composition results (This feature is provided through a partnership with Centr: By Chris Hemsworth )
• Provides 8 types of personalized sleep coaching based on sleep data measured by the Watch.
• Create better sleeping habits with 4-5 weeks of coaching to match your sleep patterns!
※ Intended for general wellness purposes only. Provides sleep guidance for your personal reference only. Not intended for use in the detection, diagnosis, or treatment of any medical conditions or sleep disorders. Consult a medical professional for advice.
• When it detects that the user is asleep, SmartThings can set actions for smart devices to create a good sleeping environment.
• Orientation settings have been added to allow the Watch to be worn in the desired direction on the desired wrist. You can freely change the direction you wear your Watch through the Watch and the Galaxy Wearable app.
• Provides a wider variety of Bixby voice commands.
Your Bixby voice command can read notifications, reply back, and control the volume of media controls.
• If you connect your phone and Watch for the first time, the apps that you often use on your current phone and other Android devices are automatically installed on your Watch (Only if the selected app exists for the Watch).

※ The frequently used app list is provided based on the app list installed with the user's Google account.

• Get to know the various popular apps on the Play Store in the Galaxy Wearable App more easily and quickly.

Build Number : R870XXU1DUK1
Android version : R(AndroidWear 11)
Release Date : 2021-11-12
Security patch level : 2021-11-01
• Improved system stability and reliability

Build Number : R870XXU1DUJA
Android version : R(AndroidWear 11)
Release Date : 2021-10-20
Security patch level : 2021-11-01
• Watch faces
- Supports 4 types of new Watch faces.
- Together, AR Emoji, Bitmoji Watch face: Usability was improved.
- My Photo Watch face: Supports GIF files.
- Animal, Cute Character Watch face: Customization feature was improved.
- Supports the backup and restoration of the order of Watch faces and the changed settings of the preloaded Watch faces.
• Samsung Health
- An improved HR measurement accuracy algorithm was added.
- The sensitivity option in the Fall Detection feature was added.
• Gesture
- A new gesture that allows you to run apps or features immediately was added.
• Call
- Supports mute status (Icon, Mute/Unmute status) while talking on the phone.
• Improved system stability and reliability

Build Number : R870XXU1CUJ2
Android version : R(AndroidWear 11)
Release Date : 2021-10-08
Security patch level : 2021-08-01
• Improved system stability and reliability

Build Number : R870XXU1CUID
Android version : R(AndroidWear 11)
Release Date : 2021-09-29
Security patch level : 2021-08-01
• Improved system stability and reliability

Build Number : R870XXU1BUI5
Android version : R(AndroidWear 11)
Release Date : 2021-09-09
Security patch level : 2021-08-01
• Improved usability of the following applications or features: Touch bezel
• Improved system stability and reliability

Build Number : R870XXU1BUH9
Android version : R(AndroidWear 11)
Release Date : 2021-08-23
Security patch level : 2021-08-01
• Improved system stability and reliability