Samsung has provided one of its clearest regional schedules yet for expanding One UI 9 beyond the Galaxy S26 generation. A Samsung Thailand roadmap lists September 28, 2026 for the Galaxy S25 series, Galaxy Z Fold 7 and Galaxy Z Flip 7, while the Galaxy S23 FE is listed for October. The key caveat is geography: these dates are for Thailand and should not be treated as a guaranteed worldwide release schedule.
One UI 9 rollout roadmap at a glance
| Device group | Confirmed regional timing | What it means |
|---|---|---|
| Galaxy S26, S26+, S26 Ultra | Rollout began September 16 globally; Thailand rollout listed from September 21 | Stable One UI 9 is already in the rollout phase. |
| Galaxy S25 series | September 28 in Thailand | First specific official regional date for the 2025 flagship generation. |
| Galaxy Z Fold 7 / Z Flip 7 | September 28 in Thailand | Samsung’s 2025 foldables join the same regional wave as the S25 family. |
| Galaxy S23 FE | October in Thailand | A month-level window is given, not an exact day. |
What Samsung has confirmed globally
Samsung’s global newsroom announced on September 16 that stable One UI 9 was beginning its expansion with the Galaxy S26, S26+ and S26 Ultra. The software had already debuted on the Galaxy Z Fold8 Ultra, Z Fold8 and Z Flip8. Samsung also said the update would gradually expand to other Galaxy devices, but the global announcement did not attach exact dates to older models.
That distinction matters. The September 28 date comes from a regional Samsung roadmap, not a promise that every Galaxy S25, Fold 7 or Flip 7 worldwide will receive an over-the-air update at the same moment. Carrier approval, firmware region and local testing can all affect when a specific phone sees an update.
Why September 28 matters for Galaxy S25 and 2025 foldable owners
The Thailand schedule is useful because it shows that Samsung considers the next stable wave close enough to publish a concrete date in at least one market. Galaxy S25, S25+, S25 Ultra and S25 FE users should therefore watch Samsung Members and the Software update screen around the end of September, while still allowing for regional variation.
The same applies to Galaxy Z Fold 7 and Z Flip 7 owners. Samsung had already included these devices in the expanded One UI 9 beta program, alongside the S25 family, in selected markets including India, Korea, the UK and the US. The new regional stable date is a logical next step, but beta participation in one country does not guarantee identical stable-release timing elsewhere.
What One UI 9 adds
Samsung’s official feature list includes My FanCam for automatically reframing recorded video around a selected person, editable and generative cards in Now Brief, and a Warranty and Care section inside Settings. Now Nudge can surface contextual suggestions, while Interpreter adds a Thread View for easier reference during translated conversations.
Document Scan has also been improved for difficult materials such as curved book pages, and Voice Recorder can present summaries in a more structured form. On the security side, Samsung highlights Security Brief and Privacy Alerts, although individual features can vary by device, country, language and account requirements.
What about Galaxy S24, S23 and other phones?
Samsung’s global announcement says One UI 9 will gradually reach more Galaxy devices, but it does not give a universal date for the Galaxy S24 or Galaxy S23 families. The Thailand roadmap reported so far gives a specific October window for the Galaxy S23 FE, not a complete worldwide calendar for every older model.
That means owners should avoid treating unofficial device lists or dates as confirmed simply because a model is technically eligible. A beta build, internal firmware test or another country’s schedule can be useful evidence of development, but it is not the same thing as an OTA date for a user’s own region.
How to check for the update safely
On a compatible Galaxy phone, open Settings > Software update > Download and install. If One UI 9 is not offered, there is normally no need to repeatedly reset the device or install firmware intended for another region. Staged rollouts can take time, and carrier variants may follow different schedules.
For broader background, PhoneSpecX previously covered the initial One UI 9 stable rollout for the Galaxy S26 series, the earlier One UI 9 beta expansion, and the Galaxy S26 FE and its One UI 9 features.
What buyers and owners should take away
The practical news is straightforward: September 28 is now an official regional target for the Galaxy S25 series, Galaxy Z Fold 7 and Galaxy Z Flip 7 in Thailand, while the Galaxy S23 FE has an October window there. It is useful evidence that Samsung’s stable rollout is moving quickly beyond the S26 family, but users outside Thailand should wait for their local Samsung channel or the update itself before treating those dates as guaranteed.
Frequently Asked Questions
When will the Galaxy S25 get One UI 9?
Samsung Thailand lists September 28, 2026 for the Galaxy S25 series. Other countries and carrier variants may receive the update on a different schedule.
When will the Galaxy Z Fold 7 and Z Flip 7 get One UI 9?
The Thailand roadmap lists both 2025 foldables for September 28. This is a regional date rather than a universal worldwide deadline.
Is One UI 9 already stable?
Yes. Samsung began the stable expansion to the Galaxy S26 series on September 16 after One UI 9 debuted on its 2026 foldables.
Is One UI 9 based on Android 17?
Yes. One UI 9 is Samsung’s Android 17 generation of Galaxy software.
Should I manually install another country’s firmware to get One UI 9 early?
For most users, waiting for the official OTA for the phone’s own region and carrier is the safer approach. Regional firmware differences can affect compatibility and support.
Sources and References
- Samsung Global Newsroom — One UI 9 official rollout announcement, September 16, 2026
- Samsung Newsroom UK — expanded One UI 9 beta program, September 1, 2026
- Android Authority — Samsung Thailand roadmap and regional rollout dates, September 18, 2026
- Gadgets 360 — One UI 9 dates for older Galaxy devices in Thailand, September 23, 2026
