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Samsung has begun global rollout of its proprietary One UI 9 based on the Android 17 operating system for flagship and mid-range Galaxy devices. The update builds on the visual basis of previous One UI versions 7 and 8, focusing on targeted interface engineering improvements, expanding Galaxy AI tools, strengthening security protocols, and deeper hardware diagnostics integration directly into the system.
Which devices are already receiving the update
Samsung traditionally does not publish a single hard schedule for all regions, but a stable One UI 9 build is already rolling out to user devices. Flagships Galaxy S26, S26+ and S26 Ultra https://tech.liga.net/ua/all/press-release/eksperty-allo-pro-samsung-galaxy-s26-iaki-onovlennia-spravdi-vazhlyvi were the first to receive the firmware; the Galaxy S25 line (including S25+, S25 Ultra) is entering a broad rollout phase; models Galaxy S25 FE, S25 Edge, and the Galaxy S24 series (S24, S24+, S24 Ultra) are currently updating within limited regional waves.
Stable files have been recorded for Galaxy Z Fold 7, Flip 7, Flip 7 FE, the experimental TriFold, as well as for the previous generation — Z Fold 6 and Z Flip 6.
Mid-range segment started with Galaxy A57.
Functional changes in One UI 9
Official change list for the base flagship line notes a reallocation of system functions across five key directions:
1. Galaxy AI and contextual hints
Now Nudge – system contextual recommendations are moved beyond the keyboard — now they are integrated into text notifications and a floating button in the lower-right corner of the screen for quick saving of reservations, locations in Google Maps, and addresses.
My FanCam – the video editor feature automatically captures the chosen object or person in frame, autonomously centers motion and frames the video stream.
Translator and calls updates – in real time, the Interpreter lets users scroll through the entire conversation history without interrupting audio dialogue, and on the call screen relevant calendar events are displayed.
2. Interface and workspace control
Quick Panel customization expanded; brightness, volume sliders and the media widget now have dynamic sizes; the mode switch button can now be separated from the main volume control.
Samsung DeX received enhancements; open app windows now move between multiple desktops via the top context menu of the window, and the previews of available desktops are pinned at the top of the recent apps menu.
The font and clock hues on the lock screen automatically adjust to match the color palette of the set wallpaper.
3. Security, privacy and device health
A separate item in the main Settings menu displays the status of official warranty, Samsung Care coverage, and built-in hardware diagnostic tests.
Added hardware lockdown for biometrics, where a quick key combination of volume down and power (or the power button in the shade) puts the phone into emergency lock mode, forcibly disabling fingerprint and face recognition until the next PIN entry.
Geolocation indication and AI audit are now visually visible when accessing GPS; a blue marker appears at the top of the screen with a direct link to the corresponding app; at the same time, AI algorithms flag excessive permissions of installed software and block launch of suspicious apps until user confirmation.
4. Health metrics in Samsung Health
The interface has been translated to scalable information cards (activity, sleep, nutrition, meditation) with the option to input data via camera.
The app calculates a comprehensive “Physical Fitness Index” based on five parameters (body composition, cardio, strength, flexibility, endurance), computes daily cardio load to prevent overtraining, analyzes sleep variability using Galaxy Watch or Galaxy Ring, and monitors a safe listening level via headphones.
5. Accessibility features and voice assistant
Bixby assistant launch optimized for lifting the phone to the face without uttering the activation wake word.
Accessibility improved as highlighted text can be scaled in a separate window (Text Spotlight), cursor control via the connected physical keyboard's digital block, the option to read aloud specific snippets (Select to speak) without fully launching TalkBack, and system updates to accessibility tools will now arrive autonomously through the Google Play store.
The full list of supported features may vary depending on device region certification, amount of RAM, and the class of CPU in each Galaxy model.
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