Samsung Widens One UI 9 Tests: More Galaxy Devices Join

If you assumed One UI 9 would stay locked to Samsung's newest flagships, firmware traces say otherwise. A quiet flurry of build numbers and regional entries has revealed that Samsung is already testing Android 17-based One UI 9 on a far broader set of Galaxy devices than many expected.

The Galaxy A26 — which only recently received the Android 16-based One UI 8.5 update — is now getting attention in One UI 9 development. But the A26 is just the opening act. Trackers and internal build identifiers show Samsung running tests on a mix of mid-range A and M models, tablets, and several foldables and flagships. That mix suggests a dual approach: refine One UI for everyday phones while ensuring a polished experience for the next generation of foldables.

The current device list under testing includes models from entry-level to premium. Firmware IDs are already popping up in different regions, hinting at staged rollouts and carrier-specific checks before wider distribution.

• Samsung Galaxy A26 — A266MUBU9DZF1 — (firmware spotted)
• Samsung Galaxy A36 — A366BXXUADZG1 — Europe
• Samsung Galaxy A37 — A376BXXU3BZG1 — India
• Samsung Galaxy Z Flip7 — (testing reported)
• Samsung Galaxy Z Flip7 FE — (testing reported)
• Samsung Galaxy Z Fold6 — (testing in India and Europe)
• Samsung Galaxy Z Flip6 — (testing in India and Europe)
• Samsung Galaxy Z Fold5 — (testing in India and Europe)
• Samsung Galaxy Z Flip5 — (testing in India and Europe)
• Samsung Galaxy S23 FE — (testing in India)
• Samsung Galaxy A15 4G — A155FXXUAFZG1 — (firmware spotted)
• Samsung Galaxy M34 — (testing in India)
• Samsung Galaxy M15 — (testing in India and Europe)
• Samsung Galaxy M35 — (testing in India)
• Samsung Galaxy M56 — (testing in India)
• Samsung Galaxy F34 — (testing in India)
• Samsung Galaxy Tab Active5 Pro — X356BXXU8DZG1 — (firmware spotted)

So what does this mean for owners? First, beta access is still tightly held: Samsung's official One UI 9 beta program has so far targeted only the Galaxy S26 series, which has already received three beta builds. The broader testing notes, however, indicate Samsung is building compatibility and ironing out device-specific issues ahead of larger public betas or stable releases.

Expect Samsung's upcoming foldables to be the first devices shipping with One UI 9 out of the box. Rumors point to a July 22 event in London where the new folding phones are likely to be unveiled — and if the leaks are right, they'll arrive with Android 17 already baked in.

Timing for public beta invitations and stable updates for the rest of the list remains unclear. Regional firmware entries often precede staged rollouts, so your handset might see a test build weeks or months before a full release. Patience. And a careful eye on update changelogs.

One last thought: Samsung expanding internal testing beyond its flagships is a practical sign. It means the company is looking to bring Android 17-level polish to a wider audience, not just premium buyers. Keep your update notifications on — and maybe clear some storage.