Samsung firmwares, SM-S921B (ACR) | EN

⏩ Download the latest Samsung firmware ✅ SM-S921B ACR. Full list of firmwares available for download

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Samsung firmware list
DeviceModelRegionPDA/AP VersionOs VersionBuild Date
Samsung Galaxy S24SM-S921BACRS921BXXS6BYE3/S921BOXM6BYE3/S921BXXS6BYE315
Samsung Galaxy S24SM-S921BACRS921BXXU5BYD9/S921BOXM5BYD9/S921BXXU5BYD915
Samsung Galaxy S24SM-S921BACRS921BXXS5AYB8/S921BOXM5AYB8/S921BXXS5AYB814
Samsung Galaxy S24SM-S921BACRS921BXXS5AYB1/S921BOXM5AYB1/S921BXXS5AYB114
Galaxy S24SM-S921BACRS921BXXS5AYA2/S921BOXM5AYA2/S921BXXS5AYA214
Galaxy S24SM-S921BACRS921BXXS5AXKB/S921BOXM5AXKB/S921BXXS5AXKB14
Galaxy S24SM-S921BACRS921BXXU5AXK5/S921BOXM5AXK5/S921BXXU5AXK514
Galaxy S24SM-S921BACRS921BXXS4AXI8/S921BOXM4AXI8/S921BXXS4AXI814
Galaxy S24SM-S921BACRS921BXXS3AXHD/S921BOXM3AXHD/S921BXXS3AXHD14
Galaxy S24SM-S921BACRS921BXXU3AXH7/S921BOXM3AXH7/S921BXXU3AXH714

Changelog: SM-S921B(ACR)

• Security
The device is protected with improved security.

One UI 7.0 Upgrade (Android 15)



Galaxy AI

Write like a pro
Let Galaxy AI help you with writing tasks by tapping the 4-star icon that appears whenever you select text. You can correct spelling and grammar, change tone, summarize, or apply formatting. You can even start with a short snippet and let the AI do the writing for you.

Transcribe and summarize recorded calls
It's easier than ever to review the content of your recorded calls in the Samsung Phone app. You can view the entire conversation as a text transcript on the Recents screen or summarize the transcript for quick review. Availability of this feature may vary depending on your country, region, or lauguage.

Remove or adjust sounds in your videos
Audio eraser helps you get the sound in your videos just right. You can remove unwanted sounds such as wind or crowd noise.

Effortlessly create images
Drawing assist makes it easier than ever to create fun images. Start with a simple sketch, add an image, or type in what you want to create. You can generate images in a variety of different styles.

Read webpage highlights aloud
Listen to highlights from articles and websites as you browse, or queue up top stories from a news site for seamless listening in Samsung Internet. Some websites may not be supported.

Get useful suggestions in AI select
When you select part of the screen with AI select, useful actions will be suggested based on what you selected. If event details are part of your selection, you’ll have an option to add it to your calendar. If you select an image, options for editing the image will be suggested.

Search smarter in Settings
It’s easier to find what you need with natural language search powered by AI. When you search in Settings, you now get more accurate and relevant results, even if you don’t know the exact name of the setting you’re trying to find. Supported languages: Korean, English (US, UK, India), Spanish (Spain, Mexico), Portuguese (Brazil), German, Italian, Japanese, French, and Chinese.

Quickly access AI features
Galaxy AI features are now available with a quick swipe no matter which app you're using. When you swipe inward from the edge of the screen to open the Apps edge panel, useful Galaxy AI features will appear at the top of the panel.



Instantly access useful information

Press and hold the Side button to access Google Gemini
The Side button is a new way to access Google Gemini or other digital assistant app quickly instead of using the corner swipe. You can change what the Side button does in Settings.

Complete multiple tasks with one ask
Google Gemini is now seamlessly integrated with Samsung apps such as Calendar, Notes, Reminder, and Clock. You can complete tasks in these apps using information from Gemini with one simple command. Try asking Google Gemini to ask about a YouTube video and save the result in Samsung Notes, or try asking Google Gemini to find your favorite sports team’s schedule and add the games to your calendar.

Circle it, find it. Hear it, find it
Circle to Search with Google allows you to search anything on your screen and get information faster with AI Overviews. Just circle an object—including images, videos, or text—and you'll get results immediately. You can even search for a song that you hear in the moment without switching apps.



Bold new look

Visual enhancements
Enjoy a more sophisticated and unique look. One UI 7 introduces a stunning redesign to key components including buttons, menus, notifications and control bars, providing a more consistent visual experience with curves and circles. Beautiful new colors, soft animations, and an innovative blur effect that's unique to One UI make information hierarchy clearer and help you focus on important information.

Reimagined Home screen
Fresh new app icons will look great on your Home screen with new visual metaphors and color schemes that make it easier to recognize the app you need. Widgets have been completely redesigned with more colorful images and more consistent layouts. Folders on your Home screen can also be made larger so you can instantly access apps without opening the folder first.

Simplified Home screen grid
Your Home screen now looks even better than before. A new standard grid layout keeps things symmetrical and makes it easier to use One UI widgets in standard sizes.

Improved Home screen landscape view
Get a more consistent look for your Home screen, even when using your phone horizontally. Widgets now have a similar aspect ratio in landscape view, and text labels appear below icons instead of beside them.

Customize your app and widget style
Make your Home screen look just the way you like it. You can now adjust the size of app icons and choose whether or not to show text labels below app icons and featured widgets. You can also adjust shape, background color, and transparency in the settings for each widget.



Lock screen and Always On Display

Stay on top of important tasks with the Now bar
Check the information you need right now and start essential features without unlocking your phone. Ongoing tasks will appear in the Now bar at the bottom of your Lock screen so you can check key information quickly. Information includes media controls, Interpreter, Stopwatch, Timer, Voice Recorder, Samsung Health, and more.

Make your clock look just the way you like it
Discover a variety of new clock styles for your Lock screen. You can adjust the thickness of lines in the default clock style, or try one of the new animated clocks to match your tastes. You can also resize your clock to any size you like and drag it to your desired position on the Lock screen.

More widgets and shortcuts
You can now see more and do more even when your phone is locked. Add a widget to show pictures and stories from your Gallery, or try a shortcut that opens the QR code scanner with a quick swipe.



Quick panel and notifications

Separate notification and quick panels
Instantly access the panel you need with more space for quick settings. Swipe down from the top right corner of the screen to open the quick settings panel. Swipe down from anywhere else on the top of the screen to open the notification panel.

Customize your quick panel
Create the quick panel layout that's right for you. You can tap the pencil icon at the top of the quick panel to enter Edit mode, then move buttons and controls up and down to match your preferences.

Live notifications
Stay on top of what's happening right now. Live notifications show you the progress of ongoing activities like timers, voice recordings, exercises, and more so you can take quick actions related to them. Live notifications will appear in the Now bar on the Lock screen, on the status bar, and at the top of the notification panel.

New notification layout
Icons on notifications are now the same as the icon that appears on your Home screen, making it easy to recognize which app sent each notification. Grouped notifications appear as a stack of cards. Tap a stack to show all notifications in the group.



Capture images with ease

New Camera layout
Camera buttons, controls, and modes have been reorganized to make it easier to find the features you need and to give you a clearer preview of the picture you're taking or the video you're recording.

Mode selection improvements
The More modes menu has been redesigned. Instead of filling the whole screen and blocking the camera view, you can now choose a mode from a small pop-up that only covers the bottom of the screen.

Enhanced zoom controls
It's now easier to choose the right zoom level. A 2x zoom button is now available by default, and additional zoom options appear after you select a lens.

Upgraded filter experience
Camera filters have been completely revamped. New filters are now available and existing filters have been improved. Each filter allows fine-tuned adjustments of intensity, color temperature, contrast and saturation, making it easier to get the look you want. You can also create custom filters based on the style and mood of pictures you choose.

Save exposure settings for each mode
Control how bright or dark your images are with the Exposure option in the camera quick controls. After you set the exposure for a mode, it will stay set in that mode even if you switch to a new mode and come back.

Improved Pro/Pro video modes
Pro and Pro video modes have a simplified layout that makes it easier to focus on the picture you're taking or the video you're recording. A new zoom control is available whenever you're recording in pro video mode that lets you control the zoom speed for smooth transitions. Mic controls in Pro video mode have been moved to quick controls.

Get perfect lighting with exposure monitors
The new Exposure monitor for Pro and Pro video modes helps you get the right exposure in your pictures and videos. Choose Zebra pattern to show stripes on areas that are under or over-exposed, or choose False color to color-code everything based on its exposure level.

Advanced editing with log videos
Get pro-level control over video color grading by recording in log format. Just turn on Log in Camera settings and the preview, then start shooting. Works in Video and Pro Video modes.

Play audio while recording videos
You can now record videos without interrupting music, podcasts, or other audio content you’re listening to. Just turn on Audio playback in Advanced video options.

Line up the perfect shot
Get help adjusting the camera's position with grid lines and levels. Grid lines can now be turned on and off separately from the horizontal level. There's also a new option to show a vertical level.



Enjoy your special moments

Free-form collages
Go beyond the preset layouts for collages in Gallery. You can now adjust the size, position, and rotation of images in your collage to create your own unique layout.

Edit collages in stories
Make your story’s collage look just the way you like it. You now have full control to edit collages created in stories. Replace images, remove or add images, or adjust the position and size.

Put your best face forward
Replace a face with closed eyes or an awkward expression with one you like better. When you take motion photos, each frame is analyzed to suggest faces you might want to choose.

Motion photo effects
Apply fun playback effects to your motion photos such as slow motion or boomerang. After applying an effect, you can instantly share the result as a video.



Powerful video editing

Easily undo your edits
Don't worry about making mistakes. Undo and Redo options are now available when editing videos for actions such as transformations, filters, and tone changes.

Auto trim your videos
Save time and avoid complicated video edits. Auto trim finds the best sections of your video and automatically trims away the unnecessary parts so your video is ready to share or edit further.

Animate your videos
Add fun animation effects to stickers and text in your videos in Studio. Choose from fade in, fade out, wipes, rotation, and more.



Manage your health

Stay mindful
The new Mindfulness feature in Samsung Health can help you manage stress and anxiety in your daily life. Keep track of your moods and emotions, practice breathing exercises and meditation, and more.

New Samsung Health badges
Stay motivated and work toward your health goals while earning new badges in Samsung Health. Challenge yourself to earn the new badges for energy score, exercise, activity, food, water, body composition, and more.



Boost your productivity

Previews for minimized apps
When multiple pop-up windows from the same app are minimized, they'll be combined into a single icon. Tapping the icon will show a preview of all open windows from the app, allowing you to easily select the window you want.

Group your alarms
Create groups of alarms that you want to control together in the Clock app. You can turn off all the alarms in one group with a single tap.

Keep all your alarms at the same volume
For simpler setup, all of your alarms will use the same volume by default. If you prefer to set different volumes for each alarm, you can choose this in Clock Settings.

Enhanced file selection
The new File Picker makes it easier to attach and select files in a variety of apps. It's easy to switch between different storage locations and categories, and previews are shown to make sure you get the right files.

Advanced options for routines
Program your phone to do almost anything you want. Routines are more powerful than ever before with If-Else logic and the ability to get data as variables.



Plan tasks and events

Easily reschedule calendar events
Just drag and drop an event from one date to another on your calendar in Month view to change the event date.

Show separate calendars on widgets
You now have more control over which calendars appear on your calendar widgets. You can choose just one calendar and show only events from it on your Home screen, or create 2 separate calendar widgets with a different calendar on each one.

Count down the days to an important event
It's easier than ever to create a countdown widget for an event on your calendar. Go to the event details, then select Add countdown widget from the more options menu. A widget will appear on your home screen showing the number of days until your birthday, anniversary, vacation, or any other event that you choose.

Move all events from one calendar to another
Avoid the hassle of moving events one at a time. You can now move all events from one calendar to another, such as moving all events from the calendar on your phone to a cloud-based calendar.

More options for repeating reminders
When you create a repeating reminder, you can now choose multiple dates for repeating instead of just one.

Enhanced quick add menu
It's now easier to create reminders quickly. The quick add menu now provides preset options for time and location conditions.

Manage your completed reminders
It’s easier to clear out the clutter from your reminder list. A new setting lets you automatically delete completed reminders after a certain period of time. You can also duplicate completed reminders so you can reuse them without entering all of the information again.



Connect and share

Easily connect to nearby devices
It's easier than ever before to connect to other Samsung devices such as TVs, tablets, PCs, watches, earbuds, and more. Tap Nearby devices in the quick panel to see devices available near you, then drag a device to your phone to instantly connect. You can also tap on a device to see the features available when connected to your phone. For example, when you tap on a TV, you’ll see an option to start Smart View.

Recommended devices for Quick Share
Easily find the right device to share with. Devices signed in to your Samsung account and devices you've shared with in the past will appear at the top of the list so they're easy to find.

Continue sharing over the internet
Finish file transfers even when devices are far apart. When sharing files using Quick Share, if the devices become too far apart to continue a direct transfer, the transfer will continue seamlessly over the internet using Wi-Fi or mobile data.



Protect your security

Protect your data in case your phone is stolen
New theft protection features help protect your apps and data in case your phone is stolen. The screen will lock automatically if theft is detected or if your network connection is lost, or you can lock the screen manually by going to android.com/lock. You can also require biometric verification before changing sensitive settings.

Check the security status of your devices
Find out about security risks and solve them quickly. Knox Matrix monitors supported devices signed in to your Samsung account and lets you how to solve security risks if any are found.

Stay safe from security threats
Auto Blocker does even more to protect you from cyber attacks when Maximum restrictions is turned on. 2G networks are now blocked, and your phone won't automatically reconnect to non-secure Wi-Fi networks. These restrictions can help prevent an attacker from intercepting your network traffic.



Battery and charging

More options for power saving
You now have more control over what happens when your phone is in Power saving mode. Choose exactly the features you want to limit to save the amount of battery that's right for you. You can even change these options while Power saving is on.

More control over battery protection
When you turn on Battery protection, you can now adjust the maximum charging level anywhere between 80% and 95%.

New charging effect
When you plug in a charger, the charging confirmation is smaller and appears at the bottom of the screen instead of the middle to prevent interruptions while still making it easy to check the charging status.



Accessible to everyone

Zoom in and out with just one finger
Zooming in and out just got easier. For people who have difficulty using pinch zoom, you can now activate 1-finger zoom from the Assistant menu. Swipe up or right to zoom in. Swipe down or left to zoom out.

Enhanced screen controls
The Assistant menu now does even more to help you control the screen. You can now double tap and touch and hold just by tapping a single button. New scrolling controls let you move around the screen a specific distance by tapping the start and end points on the screen.

Customize your touch interactions
Get help choosing the settings that are most comfortable for you. New tests are available for the Touch and hold delay, Tap duration, and Ignore repeated touches settings. The test can tell you if your current settings are appropriate or need adjustments.



Even more improvements

Watch videos again
In Video Player, a button will appear at the end of each video that lets you start the video over again from the beginning.

Improved contacts list
For a more consistent experience, the same contact list now appears in both the Phone app and Contacts app. Menus and options are the same in both locations so you can always find what you're looking for. When searching for contacts, contacts you’ve searched for frequently appear at the top of the search results, helping you find the right person quickly.

Quickly add boarding passes to Samsung Wallet
When you view a supported airline or travel webpage that includes a boarding pass in Samsung Internet, a button will appear so you can add it to Samsung Wallet quickly and easily.

Activity forecasts
It's now easy to check if the weather is suitable for outdoor activities such as running, gardening, camping, and more. You can choose up to 3 activities to show in the Weather app.

Custom place labels
It's easier to keep track of different locations in the Weather app. You can now set custom labels to the locations you add, such as Home, Office, School, or any other place where you want to check the weather.

Boost your gaming
Game Booster's in-game panel has been redesigned, making it easier to change settings quickly without leaving the action.

Set performance for each game
Game Booster now lets you adjust performance settings separately for each game. You can set some games to high performance and others to save battery for longer gameplay time. Find the settings that work best for you.

End of support for downloading Edge panels
Edge panels can no longer be downloaded from the Galaxy Store in One UI 7. Edge panels that you’ve already downloaded can continue to be used.

• Security
The device is protected with improved security.

• Security
The device is protected with improved security.

• Security
The device is protected with improved security.

• Security
The device is protected with improved security.

• Stability and reliability
Device behavior has been improved.
• Security
The device is protected with improved security.

• Security
The device is protected with improved security.

• Security
The device is protected with improved security.

One UI Update



Galaxy AI

Turn simple sketches into awesome images
Start with a simple drawing, choose your style, and let Galaxy AI transform it into a captivating work of art. Sketch to image is available in Samsung Notes, Photo Editor, Smart select, and the Edge panels.

Create unique portraits
With a wide variety of AI-generated portrait styles, you can create a whole new look for your own profile image in Contacts or someone else’s, or use Photo Editor to invent something new for any of your photos that have faces in them.

Let your phone do the writing for you
When you need to write something, whether it’s a text, an email, or a social media post, you can start by giving Samsung Keyboard's new Composer a short request or snippet of text, then let Galaxy AI do the rest.

Translate calls in more apps
Simply talk over the phone and get translation in real time, helping you break down language barriers. And now, in addition to the Samsung Phone app, you can get real-time translation in supported voice calling apps like Google Meet and WhatsApp. During a call, tap Live translate in the quick panel to start translating.

Translate image text on webpages
Get the entire webpage in your language. When you translate a webpage in Samsung Internet, all of the text on the page gets translated, whether it’s formatted as text or part of an image or photo.

Translate in Listening mode
Listen in, no matter which language is being spoken. Interpreter's new Listening mode lets you translate one-way communication, like a lecture or presentation, into your language.

Turn voice recordings into notes
It’s easier than ever before to create notes with Samsung Notes, even using just your voice. You can now transcribe voice recordings into text notes that you can edit, summarize, and more.

Translate and summarize PDFs
Note assist's translation and summary features now work with PDF files without the need to convert them to notes first. Translated text will appear in the original format of the PDF.

Auto detect languages in Voice Recorder
Use Transcript assist to convert recordings of meetings, lectures, voice memos, and more into text. The language of your recording will now be automatically detected, so you can skip the language choice and go right to the transcript.

Edit voice recordings and transcripts
After you create a transcript in Voice Recorder, you can now edit the text to fix any errors, remove unneeded parts, or add something that’s missing. You can also edit the audio recording itself by removing sections you don't need.

Enhance your wallpaper with special weather effects
Choose a photo to use for your photo ambient wallpaper and watch it change along with the time of day and weather conditions in the location you set for your weather widget. If it's snowing or raining in that location, you'll see the same conditions in your photo, and the sun will rise and set according the local time in that location.



Create epic images

Bring photos to life with Live effects
Give your subjects a lifelike appearance by applying stunning cinematic effects to people and animals in your photos.

Quickly save and share Instant slow-mo clips
After watching a video in instant slow-mo, you can save the portion of the video that you slowed down. When you share a video, the last section you watched in slow-mo is also available for sharing.

Create fun animated stickers and GIFs
Touch and hold any object from a motion photo to clip it, then instantly turn it into an animated sticker or GIF that you can share with others.

Clip just what you need
Touch and hold a person or object in any photo to clip it. You can now clip multiple items at once. After clipping, you can easily turn your selection into a sticker or copy and paste it somewhere else.



Unlock a healthier you

Discover new insights and stay motivated
Stay inspired throughout your health experience with new wellness tips in Samsung Health. Wellness tips offer valuable insights and encouragement to help you achieve your health goals.

Monitor your energy levels with Galaxy AI
Samsung Health's new energy score shows your physical and mental condition based on your sleep and physical activity. If your energy score is low, it may be best to take a rest. If your energy score is high, it could be time set a personal best in your favorite exercise. Galaxy AI provides personalized insights and motivation to keep you on the right track.

Get more detailed sleep analysis
New sleep insights give you more detailed and accurate analysis of your sleep quality. Your comprehensive sleep report now includes your heart rate, respiratory rate, and the amount of time it takes you to fall asleep after you lie down.

Make your own workout routines
Combine a series of different exercises together for a custom workout routine. You can set targets for sets, reps, time, and more. After you start your routine, your watch can automatically switch to the next exercise when you meet your target. You can optionally add breaks in between exercises. When your routine is finished, you can view your results for the entire routine all in one place.

Connect cycling power meters
Get more useful data from your cycling workouts. Samsung Health now supports connecting to cycling power meters attached to your bike. A power meter allows you to track your functional threshold power (FTP) to give you more insights into your training.



Be more productive

Suggested actions for Smart select
Take action quickly based on what's shown on your screen. When you select something on your screen with Smart select, you'll now get suggested actions related to your selection. You can quickly call phone numbers, locate addresses, enhance images, and more. Smart select can now be accessed in the Apps Edge panel.

Enhanced multi window experience
It's easier than ever to switch between picture-in-picture and split screen. Touch and hold a video playing in picture-in-picture, then drag it to the side of the screen where you want to play it.

Easier file copying and moving
It's easier than ever to find the right folder when copying or moving files in My Files. You can now choose the destination folder in a pop-up window so you can easily return the original folder when you're finished.

Create file shortcuts on the Home screen
Get faster access to the files you use most. Touch and hold any file in My Files, then use your other hand to navigate to the Home screen. Drop the file anywhere on your Home screen to create a shortcut to the file.

Improved thumbnail image display
See how images will appear before you open them. Thumbnail images for pictures and videos in My Files now appear in the original aspect ratio.

Automate your watch with modes and routines
Modes you set up on your phone, such as Sleep mode, Exercise mode, or Theater mode, can now automatically control more of your watch's settings based on what you’re doing or where you are. In addition to Watch faces and Do not disturb, modes can now also control Always On Display, Raise wrist to wake, Touch screen to wake, Turn bezel to wake, Sound mode, and Disconnection alerts. You can also use routines to control these watch actions.

More message filtering options
When you create a routine that starts when you receive a message or notification, you now have more fine-tuned control. You can add multiple keywords and choose to start the routine when all keywords are included or when any keyword is included in the message or notification.



Even more improvements

Design and share your profile card
Design your own profile card with your name and picture that other Galaxy users can see when you call them or when they view your contact info. You can also create profile cards for other people in your contacts so you can see their card when they call you.

Skim through videos quickly
Save time and effort with new video seek controls in the Video Player app. Double tap the right side of the screen to go forward 5 seconds. Double tap the left side of the screen to go back 5 seconds.

Answer calls with a tap instead of a swipe
If you have difficulty swiping, you can set your phone to answer calls with a simple tap of a button.

Answer all calls using the speaker
Enjoy easier hands-free calls. If you prefer taking calls on the speaker, a new setting lets you answer all calls on the speaker by default instead of manually switching for each call.

Get frequent weather updates
Stay prepared for sudden weather changes. Weather information now automatically updates at least once every hour to make sure you always have the latest forecasts.

Extra-strong security
If you have special security needs, you can now set Auto Blocker to apply maximum restrictions to get the highest level of protection against malware and security threats. Hyperlinks and automatic downloading attachments in messages are blocked, location data is removed when sharing pictures, and shared albums in Gallery can't be used.

Enhanced Assistant menu
You can now open the quick panel with just one tap. You also have greater control of physical buttons. Use the Assistant menu to press and hold or double press the Side button.

• Security
The device is protected with improved security.

• Security
The device is protected with improved security.

• Security
The device is protected with improved security.

• Security
The device is protected with improved security.

• Overall stability of functions improved.
• The security of your device has been improved.

• The security of your device has been improved.

· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.

We recommend using Samsung’s own utilities, Samsung Smart Switch and OTA (Over-the-air), to upgrade devices. Use our site only if you are 100% sure about the risks involved in flashing your device SM-S921B: ACR. We is not responsible for any damage caused by using the files on this website.
The Firmwares provided here are all official Samsung's Android Firmwares and has NOT been modified by anyway as we get them directly from KIES servers.
We live-monitor all firmware updates for every Samsung device, in over 500 regions.
Beware, Manually flashing firmwares may brick your device, use it at your own risk and follow our tutorial steps.

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