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Phone · Samsung Galaxy A26 5G
Stock firmware and official updates for the Samsung Galaxy A26 5G (SM-A266U1), by region.
Puerto Rico LLABuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newPuerto Rico PCTBuildA266U1UESACZH3Samsung's official release notes, newest first.
• Security The device is protected with improved security. These changes may vary depending on the model, country, or network operator of the customer environment.
Released for 20 CSCs: ACG, AIO, ATC, ATT, CCT, CHA, DSA, DSH, FKR, LLA, LRA, PCT, TFV, TMB, TMK, USC, VZW, XAA, XAG, XAR
Source: Samsung• Security The device is protected with improved security. These changes may vary depending on the model, country, or network operator of the customer environment.
Released for 20 CSCs: ACG, AIO, ATC, ATT, CCT, CHA, DSA, DSH, FKR, LLA, LRA, PCT, TFV, TMB, TMK, USC, VZW, XAA, XAG, XAR
Source: SamsungOne UI 8.5 Visual design Fresh new look One UI seamlessly integrates into your daily routine by combining immersive visuals with meaningful personalization for a more refined and sophisticated design. Transparent blur effects add depth and make content easier to navigate, while floating elements react organically to your workflow for a more focused experience. Through familiar and intuitive data visualization, One UI delivers a design that feels both personal and relatable, helping you focus on what matters. Camera New filters Three new filters are available to add vibrant film-like effects to your pictures. Home and Lock screens Automatic Lock screen layout Wallpapers with pictures of people or pets now fit perfectly every time. When you choose a photo for your Lock screen, the photo will automatically be adjusted to best fit your clock and widget layout. New downloadable wallpapers Discover new wallpapers featuring interactive elements. Wallpapers are downloadable so they don’t use up your storage space when not in use. More customizable clock fonts Personalize your Lock screen clock. You can now adjust the thickness of more font styles to match your preferred look. Weather Enhanced weather widget Quickly check upcoming precipitation in the Weather widget on your Home screen. The widget now shows a graph if precipitation is expected in the next few hours. Pollen index Check how much pollen is in the air to help manage your allergies. You can check pollen levels for trees, grass, and ragweed. Communication Direct voicemail Can't answer right now? Let callers record a voice message directly on your phone that you can listen to later. Clock Weather alarm backgrounds Wake up to an alarm that gets you ready for the day’s weather. Your alarm screen can now show the current weather conditions as a background when it rings. Time zone converter Compare time zones at a glance. The new slider in the Clock app makes it easy to check the time difference between places around the world. Connectivity Storage Share Access your files anywhere. Files from your other Samsung phones, tablets, and PCs are available in the My Files app on your phone. You can also access your phone's files on other Samsung devices, even your TV. Auto Hotspot Share your phone's internet connection more easily. You can now share your hotspot with your Samsung account family group, or create your own hotspot sharing group with anyone you choose. Family device sharing Easily connect and share files, screens, storage and more with your family. Family device sharing lets you use features like Quick Share, Storage Share, Auto Hotspot, and Multi control with Galaxy devices that belong to your family members. Quickly connect to Smart View devices Connect to your favorite display faster. You can now add a shortcut on your Home screen to instantly mirror your phone’s screen to a TV or other display device. Quick Share Avoid unwanted sharing requests You can now set Quick Share to only receive files from other devices signed in to your Samsung account or Google account. Samsung Health Enhanced weekly reports See a fuller picture of your health each week. Weekly reports now include data from your medication tracker and mindfulness sessions. Upgraded sharing experience Share your workouts your way. Mix and match your exercise stats with photos from your workout to create the perfect social media post. Start meditations from your watch Find calm right from your wrist. You can now start favorite or recommended meditations directly on your Galaxy Watch without picking up your phone. Antioxidant measurements from your watch Check your antioxidant levels anytime. Measure directly from your Galaxy Watch, even if it’s not connected to your phone. Works with Galaxy Watch8 and Galaxy Watch Ultra. Battery and power Revamped battery info See your battery use more clearly. The redesigned Battery settings screen makes it easier to check remaining time, charging status, and daily usage over the past week. Improved Power saving Use Power saving to make your battery last longer without charging. Choose Standard for moderate savings and customizable limits, or choose Maximum to turn off all non-essential features and make your battery last as long as possible. Security and privacy Theft protection Keep your phone and data safe in case it is lost or stolen. Turn on Failed authentication lock to automatically lock the screen in case there are too many failed attempts to verify your identity using your fingerprints, PIN, pattern, or password. Identity check also protects even more settings than before. Turn off Auto blocker temporarily If you need to temporarily disable Auto blocker's security protection, a new option lets you turn it on automatically 30 minutes later so you don't forget. Check the security status of your devices Keep all your devices protected. Knox Matrix now shows when any of the supported devices signed in to your Samsung account need a software update for the latest security protections. Accessibility Easily control Bluetooth hearing aids Access settings for your Bluetooth hearing aids directly from the Accessibility shortcut. A pop-up will appear that lets you change your hearing program, turn Ambient sound on or off, and more. Control magnification with mouse or keyboard Keep what you need magnified in view with these new options. You can make the magnified area follow the cursor as you type or move when you change focus using the keyboard. When using a mouse, you can make the magnified area shift as you move the pointer to the edge of the screen. Dwell action and Corner actions The Auto action after pointer stops feature has been divided into 2 features. Dwell action lets you set custom actions when your mouse stops moving for a certain amount of time. Corner actions let you set a different action for each corner of the screen. Even more improvements More customizable quick panel Arrange your quick settings just the way you like them. You can now add, remove, reorder, and reorganize controls in the quick panel. Early alerts for reminders Get alerts before reminders are due to make sure you don’t forget important tasks. You can choose how far in advance to get an alert for each reminder. Insert tables in Samsung Notes Organize information in your notes with tables. You can adjust column widths, colors, and border designs while the auto calculation feature helps you stay productive and save time. Redesigned New tab page The page that appears when you open a new tab in Samsung Browser has been redesigned to help you quickly access the websites and features you need the most. The New tab page now shows the current security status as well as open tabs from Samsung Browser on other devices. Partial screen recording Include only what you need in your screen recordings. You can now select only the part of the screen that you want to record. Calculator nudges Save time on calculations. Numbers and formulas copied to your clipboard will be suggested when you open Calculator so you can enter them with a quick tap.
Taken from the SM-A266B; this model can differ (chipset, network bands).
United States ACGBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States AIOBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States ATCBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States ATTBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States CCTBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States CHABuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States DSABuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States DSHBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States FKRBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States LRABuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States TFVBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States TMBBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States TMKBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States USCBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States VZWBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States XAABuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States XAGBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newUnited States XARBuildA266U1UESACZH3AndroidAndroid 16Security patchAug 2026ReleasedSep 14, 2026DetailsWhat's newReleased for 20 CSCs: ACG, AIO, ATC, ATT, CCT, CHA, DSA, DSH, FKR, LLA, LRA, PCT, TFV, TMB, TMK, USC, VZW, XAA, XAG, XAR
• Security The device is protected with improved security. These changes may vary depending on the model, country, or network operator of the customer environment.
Released for 20 CSCs: ACG, AIO, ATC, ATT, CCT, CHA, DSA, DSH, FKR, LLA, LRA, PCT, TFV, TMB, TMK, USC, VZW, XAA, XAG, XAR
Source: Samsung• Security The device is protected with improved security. These changes may vary depending on the model, country, or network operator of the customer environment.
Released for 20 CSCs: ACG, AIO, ATC, ATT, CCT, CHA, DSA, DSH, FKR, LLA, LRA, PCT, TFV, TMB, TMK, USC, VZW, XAA, XAG, XAR
Source: Samsung• Security The device is protected with improved security. These changes may vary depending on the model, country, or network operator of the customer environment.
Released for 20 CSCs: ACG, AIO, ATC, ATT, CCT, CHA, DSA, DSH, FKR, LLA, LRA, PCT, TFV, TMB, TMK, USC, VZW, XAA, XAG, XAR
Source: Samsung• Security The device is protected with improved security. These changes may vary depending on the model, country, or network operator of the customer environment.
Released for 20 CSCs: ACG, AIO, ATC, ATT, CCT, CHA, DSA, DSH, FKR, LLA, LRA, PCT, TFV, TMB, TMK, USC, VZW, XAA, XAG, XAR
Source: SamsungOne UI 8.0 (Android 16) Productivity Check stock prices without unlocking Stocks you follow on Google Finance with big price changes will appear on your Now bar at the end of the trading day. Easier file sharing with Quick Share It's never been easier to send and receive files. Tap the Quick Share button in quick settings to get started. You can receive files while the Quick Share screen is open and send files to others directly from Quick Share. Sticky notes Add quick annotations on top of documents in Samsung Notes. There's no limit to the number of sticky notes you can add, and it's easy to remove them later without disturbing the original document. Find downloads fast You can now filter files based on the app that was used to download them. Works in the Downloaded and Recent views in My Files. Redesigned Samsung Internet Access the features you need quickly. The Samsung Internet menu has been optimized to make it easy to access the features you use most. You can also customize the layout to match your personal preferences. Scientific calculator in portrait view Use the scientific calculator without the need to rotate the screen. The scientific calculator now works in portrait view in addition to landscape. Multitasking Enhanced split screen view While 2 apps are open in split screen view, you can push one app against the edge of the screen to keep it partially visible while giving most of your focus to the other app. Tap the smaller app any time to switch between them quickly. Reminder New Reminder interface The Reminder app has been redesigned with categories shown at the top of the screen, making it easier to see how many reminders are in each category with a quick glance. Custom categories can be hidden with a quick tap to free up more screen space. Tap one more time to make them appear again. New sample reminders Discover the power of reminders. Sample reminder templates are now available in the Reminder app. Explore these reminders to see what you can do to manage important tasks in your life. Add reminders easily It's never been easier to add new reminders. Just type your reminder into the box at the bottom of the screen. Suggestions will appear as you type that you can tap to save time. You can add checklists, locations, and pictures using the buttons below the text box. Or, if you don't want to type at all, tap the Mic icon for voice input. Calendar Manage reminders in Calendar You can easily create reminders in the Calendar app without opening the Reminder app. Whenever you tap the + button, you'll have the choice of adding an event or a reminder. You can also drag and drop reminders on your calendar to reschedule them. Add events quickly When you start adding an event in the quick add menu, you'll get suggestions for event names and times based on your past events. Just tap one of the suggestions to add an event without additional typing. Samsung Health Running coach Whether you're a beginner or an experienced runner, the new Running coach feature in Samsung Health provides personalized training programs and tips to help you run farther and faster while minimizing the risk of injury. Works with Galaxy Watch7 or higher. Bedtime guidance Get to sleep at the right time so you wake up feeling refreshed. The new Bedtime guidance feature analyzes your sleep data and recommends the best time to go to sleep each night. Running challenges In addition to step challenges, you can now challenge your friends to run. You can set a target distance and see who gets there the fastest or set a time limit and see who runs the farthest. Check your antioxidant intake The Antioxidant index (Labs) feature uses your Galaxy Watch to detect the level of carotenoids in your skin. Carotenoids are a type of antioxidant contained in fruits and vegetables that can help prevent physical aging. Works with Galaxy Watch8 and Galaxy Watch Ultra. Food recording reminders Stay on track to meet your calorie goals. You can now set reminders for recording your food intake in Samsung Health. Track your vascular load Use your Galaxy Watch to measure your vascular load, which is the amount of stress on your blood vessels. First, create a baseline measurement by wearing your watch while sleeping for at least 3 days, then you'll be able to see when your vascular load gets higher or lower over time. Works with Galaxy Watch8 and Galaxy Watch Ultra. Share health data with friends and family You can now share health data with anyone you choose, even if they're not a member of your family group. Photo and video Swipe up or down to open quick controls Access quick controls in Camera even quicker than before by swiping up or down anywhere in the preview area. In Camera settings, change the Swipe up/down option to open quick controls. Audio enhancements Quick access to Galaxy Buds settings It's easier than ever before to control your Galaxy Buds. You can now adjust Buds settings directly from your phone's Settings without the need to open the Galaxy Wearable app. Communication Improved profile cards It's easier to create and edit your profile card to get the perfect layout for your name and picture. After creating, you can share your profile card so other people can see it when you call them. Review recorded calls in Contacts It's now easier to review your past conversations. Calls you've recorded now appear on the contact history screen. Security and privacy Enhanced Secure Folder Keep sensitive apps and data in a separate, protected area of your phone. You can now set Secure Folder to close apps and prevent notifications when you lock it. You can also completely hide and encrypt your Secure Folder for maximum protection. Stronger account security Knox Matrix regularly scans devices signed in to your Samsung account for security risks. When a serious risk is found on a device, that device will be automatically signed out of your Samsung account to protect the security risk from spreading to your account and other devices. You can check the security status of your devices any time in Security and privacy settings. Show or hide notification content while locked The option to show or hide notification content while your phone is locked is now located in Notifications settings. Choose to show content for quick access to notifications without unlocking your phone, or choose to hide content to keep your notifications private and prevent others from seeing them. Accessibility Pinch and zoom with the Assistant menu The Assistant menu now provides more ways to zoom in and out on the screen. In addition to dragging with one finger, you can now adjust the zoom level by pressing buttons on the screen. Control mouse actions with your keyboard If you can't or don't want to use a mouse, turn on Mouse keys in Accessibility settings to use your physical keyboard to move the mouse pointer, click, hold, and scroll. Magnify your keyboard You can now make the keys on the on-screen keyboard larger so they're easier to see and tap. Turn on Magnify keyboard while typing in Magnification settings to try it. Modes and routines New preset routines Check out the new preset routines for weather and other advanced conditions. Use them as they are, or customize them to meet your needs. New routine actions New actions are available for getting data from the Clock, Calendar, and Samsung Notes apps. After you get data, you can use it in other conditions or actions in your routine. Even more improvements Easily organize alarms You can now add existing alarms to an alarm group by tapping the + button on the Alarm group screen. You can also add an alarm group to a widget on your Home screen so you can turn all of the alarms in the group on or off with a single tap. Enhanced app notification settings You can now choose the pop-up notification style for each app separately in the app’s notification settings. Get quicker support Enjoy quicker check-ins when you visit Samsung service centers. You can use NFC or scan a QR code to share basic information such as your name and phone number with staff without filling out any forms. Your data is encrypted and can only be accessed by Samsung support staff. Revamped weather visuals The Weather app now provides more rich and realistic images to help you intuitively understand the current weather conditions.
Released for 20 CSCs: ACG, AIO, ATC, ATT, CCT, CHA, DSA, DSH, FKR, LLA, LRA, PCT, TFV, TMB, TMK, USC, VZW, XAA, XAG, XAR
Source: Samsung• Security The device is protected with improved security. These changes may vary depending on the model, country, or network operator of the customer environment.
Released for 20 CSCs: ACG, AIO, ATC, ATT, CCT, CHA, DSA, DSH, FKR, LLA, LRA, PCT, TFV, TMB, TMK, USC, VZW, XAA, XAG, XAR
Source: Samsung• Security The device is protected with improved security. These changes may vary depending on the model, country, or network operator of the customer environment.
Released for 20 CSCs: ACG, AIO, ATC, ATT, CCT, CHA, DSA, DSH, FKR, LLA, LRA, PCT, TFV, TMB, TMK, USC, VZW, XAA, XAG, XAR
Source: Samsung• Security The device is protected with improved security. These changes may vary depending on the model, country, or network operator of the customer environment.
Released for 2 CSCs: LLA, PCT
Source: Samsung• 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.
Released for 20 CSCs: ACG, AIO, ATC, ATT, CCT, CHA, DSA, DSH, FKR, LLA, LRA, PCT, TFV, TMB, TMK, USC, VZW, XAA, XAG, XAR
Source: Samsung• Security The device is protected with improved security.
Released for 20 CSCs: ACG, AIO, ATC, ATT, CCT, CHA, DSA, DSH, FKR, LLA, LRA, PCT, TFV, TMB, TMK, USC, VZW, XAA, XAG, XAR
Source: Samsung
