Samsung has officially started the stable rollout of One UI 9, its Android 17-based software update, beginning with the Galaxy S26, S26+, and S26 Ultra. The company confirmed the expansion in a Global Newsroom post dated September 16, 2026, after One UI 9 first shipped on the Galaxy Z Fold8 / Flip8 family earlier in the summer.

9to5Google reports the stable S26-series push follows roughly four months of beta testing. SamMobile adds that South Korea is among the first markets live, with firmware in the S94xNKSU4BZ16 family for beta testers and a larger download expected for devices jumping straight from One UI 8. Regional schedules vary — Samsung’s Canada newsroom, for example, points to a September 21 local start for the S26 series.

What is new in One UI 9

Samsung’s newsroom framing groups the update around capture, personalization, everyday AI shortcuts, and clearer security visibility — not a single headline gimmick.

My FanCam — automatically tracks a selected person in a recorded video and reframes the shot as they move, aimed at social-ready clips with less manual editing.
Generative and editable Now Brief cards — users can create and tweak cards (health, weather, video, and more) so the daily brief matches what they actually care about.
Warranty and Care in Settings — warranty status, self-diagnostics, repair estimates, and Samsung Care+ / service booking live in one menu for linked devices.
Galaxy AI upgrades — Samsung calls out improved Now Nudge context suggestions, Creative Studio prompts tied to upcoming events, Interpreter’s new Thread View, cleaner Document Scan on curved or folded pages, and more structured Voice Recorder summaries.
Security and privacy — Security Brief surfaces malware / unknown-source / permission alerts inside Now Brief; Privacy Alerts use on-device AI to flag risky background permission behavior; Scam Detection expands to more countries and languages (Samsung footnotes Japan, Canada, and India among the expansion markets).

Who gets Android 17 first — and who is next

As of the September 16 announcement, the stable One UI 9 package is rolling to the Galaxy S26 trio first, after Fold8 / Flip8 already had the official build. Samsung says the update will “gradually roll out to other Galaxy devices.”

A useful early roadmap sits in Samsung’s own Privacy Alerts footnote, which 9to5Google highlighted as a partial device list. That footnote references support on Galaxy S26 / S26 Ultra, S25 / S25 FE, S24 / S24 FE, S23 / S23 FE, Z Fold7 / Flip7, Fold6 / Flip6, Fold5 / Flip5, plus Tab S11 / S10 / S9 Ultra and Plus variants (Samsung’s text also includes a “Fol6” typo). The list is not exhaustive — S26+ is missing from that footnote even though the headline rollout includes it, and many S25+/Ultra-class devices are expected via the broader One UI 9 program.

How to check for the update

On an eligible Galaxy phone, open Settings → Software update → Download and install (wording can vary slightly by region) and tap Check for updates. Keep the phone on Wi‑Fi with solid battery before installing. Availability is staggered by carrier and country — if nothing appears yet, wait a few days rather than sideloading unofficial packages.

Why it matters

One UI 9 is Samsung’s Android 17 vehicle for the next year of Galaxy AI and security messaging. Starting on the current S26 flagships is expected; the more important consumer signal is how quickly the update fans out to last year’s Foldables, S25 / S24 lines, and Tab S series — and whether features like Scam Detection and Privacy Alerts land with the same regional caveats as prior One UI drops.

For now, the confirmed facts are narrow and useful: stable One UI 9 / Android 17 is live for Galaxy S26 / S26+ / S26 Ultra as of September 16, 2026, Fold8-class devices already had it, and Samsung is promising a gradual wider rollout with a clearer AI + security feature set than a pure version-number bump.