One UI 9 testing is expanding to more Samsung Galaxy devices, signaling that the company is moving closer to a broader rollout of its Android 17-based software.
Samsung has begun developing One UI 9 for several additional phones and tablets, according to reported firmware activity. The list includes Galaxy A-series, M-series and F-series models, along with recent foldables and a rugged Galaxy tablet.
The company has so far opened the One UI 9 beta program only for the Galaxy S26 series. That flagship lineup has reportedly received three beta updates, while other devices appear to remain in internal testing.
One UI 9 Testing Reaches More Galaxy Models
Samsung is now said to be working on One UI 9 for the Galaxy A26, a device that received the stable Android 16-based One UI 8.5 update in May.
The Galaxy A26 is not alone. Reported test builds also point to development activity for the Galaxy A36, Galaxy A37, Galaxy A15 4G, Galaxy M34, Galaxy M15, Galaxy M35, Galaxy M56 and Galaxy F34.
The testing activity suggests Samsung is preparing One UI 9 for a wide range of devices, not just its premium Galaxy S and Z models. That matters because Samsung’s update strategy has become a major part of its appeal in the Android market.
However, internal testing does not guarantee an immediate public release. Samsung has not provided a confirmed beta or stable rollout schedule for most of the devices listed in the report.
Foldables Are Part of the Test List
Samsung is also testing One UI 9 on several Galaxy Z-series foldables, according to the source information.
The reported list includes the Galaxy Z Fold6 and Galaxy Z Flip6 in India and Europe, as well as the Galaxy Z Fold5 and Galaxy Z Flip5 in the same regions. The Galaxy Z Flip7 and Galaxy Z Flip7 FE are also listed, although no firmware region details were provided for those models.
Samsung’s upcoming foldable phones are expected to be the first devices to run One UI 9 out of the box. They are rumored to be unveiled on July 22 at an event in London, though the source information does not confirm final launch details.
That timing would fit Samsung’s usual strategy of using major hardware launches to introduce new software features. Foldables also give the company a showcase for multitasking tools, cover-screen functions and display-specific interface changes.
Reported One UI 9 Test Devices
The reported testing list includes a mix of confirmed firmware numbers and region details.
The Galaxy A26 is associated with firmware version A266MUBU9DZF1. The Galaxy A36 is listed with A366BXXUADZG1 in Europe, while the Galaxy A37 is listed with A376BXXU3BZG1 in India.
The Galaxy A15 4G is linked to A155FXXUAFZG1, and the Galaxy Tab Active5 Pro is listed with X356BXXU8DZG1. The Tab Active5 Pro’s inclusion suggests Samsung is also preparing the update for business and rugged-device users.
Several other models are listed without firmware numbers but with regions attached. The Galaxy Z Fold6, Z Flip6, Z Fold5 and Z Flip5 are said to be in testing in India and Europe. The Galaxy S23 FE is listed for India.
The Galaxy M34, M35, M56 and F34 are also listed for India, while the Galaxy M15 appears in both India and Europe. These regional references may indicate where Samsung is currently validating builds, not necessarily where public releases will begin first.
Beta Program Still Limited to Galaxy S26 Series
Despite the wider internal testing, Samsung has opened the One UI 9 beta only for the Galaxy S26 series so far.
That suggests the company is using its newest flagship phones as the first public test group. The Galaxy S26 lineup has reportedly received three One UI 9 beta builds, giving Samsung a controlled way to test features and fix bugs before expanding access.
Samsung has not said when other Galaxy devices will enter beta testing. It also has not confirmed when stable One UI 9 builds will begin rolling out beyond devices that ship with the software.
For users, that means the appearance of a test build should be treated as a progress signal rather than a release date. Internal firmware development can start weeks or months before a public update becomes available.
Why the Update Matters for Samsung Users
One UI 9 will be based on Android 17, making it the next major software update for Samsung’s Galaxy ecosystem.
Major One UI releases typically bring interface refinements, new privacy controls, performance improvements and Samsung-specific features layered on top of Android. The source information does not provide details on One UI 9’s feature set, so it is unclear what user-facing changes Samsung plans to highlight.
Still, the broad device testing suggests Samsung is preparing the update across multiple price segments. That is important because midrange Galaxy A and M models account for a large share of Samsung’s global phone base.
For many buyers, software support has become as important as camera hardware or battery size. Timely updates can extend a phone’s useful life and improve security, especially as consumers keep devices longer.
Business Implications for Samsung
Samsung’s update rollout strategy has competitive value.
In the Android market, where manufacturers vary widely in update speed and support length, Samsung has worked to position Galaxy devices as safer long-term purchases. Testing One UI 9 across flagships, foldables, midrange phones and tablets supports that strategy.
The inclusion of models such as the Galaxy A15 4G and Galaxy M-series devices also indicates that Samsung is not limiting major software work to premium hardware. That helps protect its position in price-sensitive markets such as India, where midrange devices drive high volumes.
At the same time, Samsung must manage expectations carefully. A large testing list can generate excitement, but delayed beta access or slow stable releases may frustrate users watching for updates.
What to Watch Next
The next major milestone is expected to be Samsung’s upcoming foldable launch, where new Galaxy Z models are rumored to debut with One UI 9 preinstalled.
After that, attention will shift to the public beta schedule for older Galaxy phones and tablets. Galaxy S26 users already have access to the beta program, but owners of Galaxy Z, Galaxy A, Galaxy M and Galaxy F devices are still waiting for clearer timelines.
For now, the reported expansion of One UI 9 testing shows Samsung is moving deeper into Android 17 development. The key questions are when the beta opens beyond the Galaxy S26 series, which regions receive it first and how quickly Samsung can move from test builds to stable updates.
Samsung has opened the One UI 9 beta program only for the Galaxy S26 series, which has received three One UI 9 beta updates so far. We don’t know when exactly the rest of the devices will get beta/stable builds of One UI 9, but we do know that Samsung’s upcoming folding smartphones will be the first to run One UI 9 out of the box. They are rumored to be unveiled on July 22 at an event in London.
