Samsung is Already Testing Android 16-Based One UI 8 on Multiple Galaxy Devices

Naveen Thakur
22 Aug, 2025

Samsung is rapidly moving forward with its Android 16-based One UI 8 development, and the rollout process looks more aggressive than ever. The company has been testing various versions of the software—official builds, beta releases, and internal builds—across its wide lineup of Galaxy devices. This includes not just the latest flagship models but also older phones, foldables, mid-range smartphones, and tablets.

Samsung One UI 8 update testing across Galaxy S, Z Fold, Z Flip, A series, M series, and Tab devices
Samsung Testing Android 16-Based One UI 8 Across Multiple Galaxy Devices

With One UI 8, Samsung aims to deliver a faster, smoother, and feature-packed Android experience to its users. The journey started with the Galaxy S25 series in May 2025, followed by the official unveiling with the Galaxy Z Fold 7 and Z Flip 7 in July 2025. Since then, beta testing has expanded to more Galaxy devices, while internal builds continue to appear on CheckFirm and benchmark listings.

Let’s take a closer look at how Samsung is testing One UI 8, which devices are in line, and what this means for Galaxy users worldwide.

One UI 8 Beta and Official Rollout Timeline

  • May 2025 – Samsung launched the One UI 8 Beta Program for the Galaxy S25 series. This gave early adopters a chance to test Android 16 features before its final release.

  • July 2025 – The official version of One UI 8 debuted with the Galaxy Z Fold 7 and Z Flip 7, making them the first Samsung devices to ship with Android 16 out of the box.

  • August 2025 – The first major expansion took place, with the Galaxy S24 series, Z Flip 6, and Z Fold 6 joining the beta program.

  • September 2025 (Planned) – Samsung has officially confirmed that the Galaxy S23 series, Galaxy Z Fold 5, Z Flip 5, Galaxy A55, A54, A36, and A35 will gain beta access.

While these are the confirmed models, Samsung’s internal test builds reveal that even more Galaxy devices are being prepared for the One UI 8 update.

Internal One UI 8 Testing: What It Means

CheckFirm data and Geekbench listings show that Samsung has already compiled internal builds of One UI 8 for several Galaxy models. This indicates that while not all of them will participate in the public beta program, Samsung is preparing their firmware ahead of time.

This strategy helps the company:

  1. Fast-track the stable rollout once official distribution begins.

  2. Ensure compatibility and stability across a wide range of devices.

  3. Test hardware-specific optimizations in advance.

Devices Already in Testing

Here’s the full breakdown of devices where One UI 8 internal or beta builds have been spotted so far:

📱 Galaxy S Series

  • Galaxy S23 series (S23, S23+, S23 Ultra, S23 FE) – Both internal and beta builds are in circulation. The stable rollout is expected to be among the first after the S25 and S24 series.

  • Galaxy S22 series (S22, S22+, S22 Ultra) – Internal builds spotted. While Samsung hasn’t confirmed beta participation, it’s clear these flagships will get One UI 8.

  • Galaxy S21 FE – Internal builds found, suggesting that Samsung wants to bring the update to this fan-favorite device as well.

📱 Galaxy Z Series (Foldables)

  • Galaxy Z Fold 5, Z Flip 5 – Internal beta builds spotted, with the beta expansion already confirmed for September.

  • Galaxy Z Fold 4, Z Flip 4 – Internal beta builds spotted. These foldables will likely get the stable update later in the roadmap.

📱 Galaxy A Series

Samsung’s popular mid-range lineup is not being left behind:

  • Galaxy A56 – Internal builds spotted.

  • Galaxy A55 – Beta build spotted, confirmed for September rollout.

  • Galaxy A54 – Beta build spotted, confirmed for September.

  • Galaxy A36 – Beta builds emerging, official beta confirmed for September.

  • Galaxy A35 – Internal builds spotted, confirmed beta participation in September.

  • Galaxy A26 – Internal build spotted, likely to get the stable update.

  • Galaxy A73 – Internal build spotted, keeping the 2022 premium mid-ranger alive in Samsung’s plans.

  • Galaxy A33 – Geekbench listing hints at internal testing.

📱 Galaxy Tab Series (Tablets)

Samsung’s tablets are also in the testing phase, with both flagship and rugged models included:

  • Galaxy Tab S10 series (Tab S10, S10+, S10 Ultra, Tab S10 FE) – Internal builds spotted, with beta coming in September.

  • Galaxy Tab S9 series (S9, S9+, S9 Ultra) – Internal builds spotted, ensuring that 2023’s flagship tablets will stay updated.

  • Galaxy Tab Active 5 Pro – Geekbench spotted with One UI 8, showing Samsung’s commitment to its rugged tablet lineup.

📱 Galaxy M Series

  • Galaxy M34 – Spotted in testing. Even though M-series devices don’t usually get beta builds, internal testing ensures the stable rollout won’t take long.

Why Some Devices Get Beta and Others Don’t

Not all devices spotted with One UI 8 builds will join the public beta program. Samsung typically restricts beta access to flagships and select mid-range models due to higher demand and faster testing feedback from power users.

Devices like the Galaxy S22 series, A56, and M34 may skip public beta but will still receive the stable update once Samsung finalizes it. This approach helps Samsung balance testing efficiency with broad update coverage.

Samsung’s Update Strategy with One UI 8

Samsung has built a strong reputation for being the fastest Android OEM in delivering major updates. With One UI 8, the company seems to be accelerating the process even further.

Key aspects of Samsung’s update strategy include:

  1. Parallel Testing – Running beta, internal, and stable builds simultaneously for different device groups.

  2. Foldables as Showcases – Launching the Z Fold 7 and Z Flip 7 with Android 16 ensures that Samsung’s foldables are seen as innovation leaders.

  3. Wider Beta Participation – Expanding to devices like the A55, A54, and A36 highlights Samsung’s intention to test features on mid-range hardware before rollout.

  4. Global Roadmap Alignment – By preparing firmware for devices across multiple launch years, Samsung ensures a smoother global rollout once it announces the roadmap.

What Users Can Expect from One UI 8

While Samsung hasn’t revealed the complete changelog, some expected highlights of One UI 8 include:

  • Android 16 core enhancements – Improved privacy, app optimization, and AI-based features.

  • More customization options – Lock screen widgets, new theme packs, and deeper Good Lock integration.

  • Smarter multitasking – Especially on foldables and tablets, with advanced taskbar and multi-window enhancements.

  • Battery efficiency improvements – Optimized background processes and adaptive charging options.

  • Camera and gallery updates – Better AI editing tools, enhanced photo remastering, and improved night photography.

No Official Roadmap Yet

It’s important to note that Samsung has not yet shared the official One UI 8 roadmap. While internal builds give us strong hints, the final rollout sequence may differ slightly. Samsung typically announces its roadmap through the Samsung Members app once the stable update is ready to expand beyond the beta program.

Conclusion

Samsung is clearly ahead of the curve with Android 16-based One UI 8 testing. From the Galaxy S25 and Z Fold 7 flagships to older models like the S22 and even mid-range A-series devices, the company is ensuring that a wide user base will benefit from the update.

With official builds, beta expansions, and internal test firmware already live, One UI 8 looks set to become Samsung’s fastest and most widespread update rollout yet.

As we move into September 2025, all eyes will be on Samsung to reveal its official roadmap, giving Galaxy users a clear picture of when their devices will receive the Android 16-based upgrade.

Until then, spotting internal builds on CheckFirm and benchmark sites keeps the excitement alive for Galaxy fans across the globe.


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