Samsung's Galaxy S26 Ultra gets its first stable One UI 9 build. Test builds for A57, A37, Z TriFold and S25 Plus confirmed. Unpacked July 22 likely sets public launch.
Alpha Score of 70 reflects moderate overall profile with moderate momentum, moderate value, strong quality, strong sentiment.
Samsung's One UI 9 rollout reached a key testing milestone this week. The first stable build for the Galaxy S26 Ultra appeared on the company's servers, according to Fahad Ali Javed on X, via SamMobile. That build follows four beta iterations and typically surfaces a month or more before a public release.
Separate test builds have surfaced for the Galaxy A57, A37, and Z TriFold, firmware tracker Tarun Vats confirmed. Vats also posted screenshots of an internal One UI 9 build running on a Galaxy S25 Plus. The simultaneous testing across nearly the entire current device range suggests a fast rollout once the software formally launches.
Samsung's Unpacked event in London is scheduled for July 22. The company is expected to debut One UI 9 alongside new foldable phones. Stable builds for existing Galaxy devices should roll out in the weeks after the event.
Recent beta releases focused on stability fixes – camera preview cropping, inaccurate 30x zoom focus, and lock screen widgets not updating. New features are present in the test builds. A Text Spotlight tool aims to improve reading accessibility. A rebuilt TalkBack will receive updates through the Play Store rather than requiring full system updates. The power menu now shows a message requiring PIN or pattern to re-unlock after exiting the lock screen, closing a biometrics gap identified by testers. A Secure Lock Quick Panel button disables biometrics entirely, dropping back to PIN, pattern or password.
The headline feature, Gemini Intelligence, is absent from all test builds. Samsung and Google's agentic AI suite is expected to debut at Unpacked alongside the Galaxy Z Fold 8. That would mark the first public availability of the multi-step task assistant.
The confirmed testing lineup now includes the Galaxy S23 through S26 series, A15 through A57, M35, M36, Z Fold 6, Z Flip 6, and Z TriFold. The S26 Ultra's first stable build is the strongest signal yet that a public release is near.
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