Samsung’s One UI 9 — its Android 17 software — is no longer a launch-day exclusive for the newest foldables. The wider rollout began with the Galaxy S26 series in September 2026 and is now working its way down the range. Samsung Japan has published the clearest official schedule so far, and while the dates are Japan’s, they are the best guide available for everyone else.
Here is the schedule, what it does and does not promise, and how to check whether your Galaxy is due.
Key Takeaways
- The rollout began with the Galaxy S26 series in September 2026 and has since reached the S25 series, Z Fold 7 and Z Flip 7, and the S24 family in several markets.
- Samsung Japan’s official windows: S26/S25/Z Fold 7/Z Flip 7 — mid-October; S24 and S24 FE — late October; S23 series and Z Fold 5/Flip 5 — early to mid-November; S23 FE — mid-January 2027.
- Japan’s dates usually land a few weeks after most other regions get the update, so the global rollout tends to run slightly ahead of this schedule — but carrier and country differences can flip that for individual phones.
- Budget Galaxy A models and remaining regions are expected to continue through December 2026 and January 2027.
- The Japan list is not the complete global eligibility list — a model missing from it is not automatically excluded.
The Schedule, Wave by Wave
Wave 1 — done or nearly done globally. The Galaxy S26, S26+ and S26 Ultra led the rollout from September. The S25 series and the Z Fold 7 / Z Flip 7 followed, and the S24, S24+, S24 Ultra and S24 FE began receiving One UI 9 in October in many markets (India’s reported start dates, for example, run from October 6 for the S25 family to October 12 for the S24 family).
Wave 2 — November. The Galaxy S23 and S23 Ultra are scheduled for early November in Japan (mid-November for open-market models), with the Z Fold 5 and Z Flip 5 in the early-to-mid November window depending on carrier. India reports point to the S23 series being next in line there too, though Samsung has not published separate India dates.
Wave 3 — December to January. Mid-range and budget models fill out the tail: a growing list of Galaxy A phones (the A35 and M-series models began in late October in India) continues through December, and the S23 FE sits at the very end of the published Japan schedule in mid-January 2027.
| Galaxy series | Japan window (official) | Status elsewhere |
|---|---|---|
| S26 / S26+ / S26 Ultra | Mid-October | Rolling out since September |
| S25 / S25 Ultra, Z Fold 7, Z Flip 7 | Mid-October | Rolling out since early October |
| S24 / S24 Ultra / S24 FE | Late October | Rolling out since mid-October |
| S23 / S23 Ultra, Z Fold 5, Z Flip 5 | Early–mid November | Expected November |
| S23 FE | Mid-January 2027 | Expected last |
| Galaxy A / M / F models | October–January (varies) | Staggered by model and country |
Why Your Date May Differ
Three warnings before you mark a calendar. First, the table above is Samsung Japan’s schedule — Samsung itself presents it as a regional plan, and One UI rollouts historically reach Japan later than most markets, so many owners will see the update days or weeks earlier. Second, within any country, carrier models and unlocked models update on different days, sometimes weeks apart. Third, Samsung describes the rollout as sequential and subject to change without notice — a window is a plan, not a promise.
The honest answer to “when will my phone get it?” is therefore: flagships from the last two generations mostly have it or are getting it now; S23-generation phones land in November; budget models and the S23 FE run into the new year.
How to Check Your Galaxy
- Open Settings → Software update.
- Tap Download and install — if One UI 9 is available for your model, region and carrier, it appears here first.
- Turn on Auto download over Wi-Fi so the update is ready the moment your wave opens.
- No update yet? Nothing is wrong — check again weekly rather than daily; staged rollouts open in batches.
One practical note: One UI 9 is a large download. Keep a few gigabytes free and install it on Wi-Fi, and if the update does arrive and your battery life dips for a few days afterwards, that is a known pattern with fixes of its own (see the Related Guides below).
The Bottom Line
One UI 9’s rollout is a marathon that started in September and ends around January 2027. If you own an S26, S25 or S24, your update is out or imminent; S23 owners should watch November; S23 FE and budget-model owners are looking at December and January. Use Samsung Japan’s dates as a map, not a ticket — and let the Software update screen have the final word.
Related Guides
- One UI 9 Has a Hidden ‘Network Guard’ That Can Silence Ad-Heavy Apps
- One UI 9 Battery Drain: Fixes That Work
- Samsung News Is Shutting Down on December 21
FAQs
When did the One UI 9 rollout start?
It began with the Galaxy S26 series in September 2026, after One UI 9 debuted on the Galaxy Z Fold 8 and Flip 8 foldables in August. The S25 series, Z Fold 7, Z Flip 7 and S24 family followed through October.
When will the Galaxy S23 get One UI 9?
Samsung Japan’s official schedule puts the S23 and S23 Ultra in early November 2026 (mid-November for open-market models). Since Japan usually receives One UI updates a few weeks after most regions, many S23 owners elsewhere may see it around the same time or slightly earlier. The S23 FE is scheduled last, in mid-January 2027.
Why isn’t my Galaxy model on Samsung’s list?
The published schedule comes from Samsung Japan and is a regional list, not the complete global eligibility list. Samsung notes the list is incomplete, so a missing model — including some Plus variants and region-specific A-series phones — is not automatically excluded from One UI 9.
How do I check if One UI 9 is available for my phone?
Go to Settings → Software update → Download and install. Rollouts are staged by model, country and carrier, so if nothing appears yet, your wave has not opened — enable Auto download over Wi-Fi and check again in a week.
