Samsung has been rolling out the One UI 8.5 beta for the Galaxy S25 series since December 2025. This minor One UI upgrade is based on Android 16, which brings improvements focused on easier content creation, better sharing, smoother performance, and some AI tweaks.
The beta program has been one of Samsung’s longest and most active ones, with multiple builds released to fix bugs before the final stable version drops.
Here’s a simple, date-wise breakdown of the beta releases for the Galaxy S25, S25+, and S25 Ultra, based on what we have seen so far. Keep in mind that exact changelogs can vary slightly by region, and not every build brought new stuff, many focused on fixes and stability. Let’s start:
One UI 8.5 Beta 1:
On December 8, 2025, Samsung kicked off the One UI 8.5 beta program for the S25 series in select countries like the US, UK, South Korea, Germany, India, and Poland. This was the first build with most of the new features. You could sign up through the Samsung Members app. What it included:
- Upgraded Photo Assist for more seamless image editing and generation (you can keep creating variations without saving each one and review your edit history later).
- Better Quick Share that smartly suggests sending photos to people recognized in them.
- New connectivity options like Storage Share, enhanced Auracast for audio, and other sharing/connectivity improvements.
- General UI tweaks for easier everyday use, plus early performance and privacy enhancements.
Beta 2:
Around December 22-23, 2025, the second beta was released about two weeks later and expanded to a couple more regions. It was around 1.1 GB in size for new installs. What it included:
- Mostly bug fixes: Fixed stuttering in call menus, issues with the volume button, and some third-party apps crashing unexpectedly.
- Camera Assistant now supports dual recording and single take mode more reliably.
- Included the December 2025 security patch.
- Minor stability improvements.
Beta 3:
Around January 5, 2026, this one brought the January 2026 security patch and focused on polishing the experience. What it included:
- Fixes for battery drain issues.
- Reduced lag in the Gallery app.
- Resolved lock-screen clock glitches.
- Other general bug fixes and performance tweaks.
Beta 4:
Around early to mid-February 2026, Samsung kept the momentum with smaller, targeted updates. What it included:
- Minor tweaks and fixes (details were light, mostly stability and small UI adjustments).
- Continued bug squashing from previous feedback.
Beta 5 and Beta 6:
Mid to late February 2026. These builds kept coming steadily. Beta 6, for example, started rolling out in places like India shortly after the Galaxy S26 series launched with stable One UI 8.5. What included:
- Focus on system stability and performance.
- Various small fixes to apps and connectivity.
Beta 7:
Around March 12, 2026, by this point, the beta was getting more stable. What it included:
- Critical bug fixes: Stopped unintended video calls, Gallery app crashes, and false DeX overheating warnings.
- Improved Messages app (no more stuttering when opening threads).
- Better Wi-Fi recovery when switching networks.
- Overall smoother performance and stability improvements.
Beta 8:
Late March 2026: Another incremental update that continued the stability push. What it included:
- More bug fixes and refinements (specifics were mostly under-the-hood, with users noting fewer random issues).
Beta 9:
Around April 9, 2026 (rolled out in South Korea, India, and later the US), this one landed in the US recently for carrier-locked models. What it included:
- Nine specific changes/fixes (Samsung listed them in the changelog, covering stability, app behavior, and minor UI polish).
- April 2026 security patch elements in some variants.
- Continued improvements to animations, Quick Panel, and overall responsiveness.
Beta 10:
Expected around April 20, 2026, Samsung reportedly has plans for a 10th beta. Testing for a build (ZZD9) has already started internally. What it might include:
- Possible addition of a few AI features from the newer S26 series (like enhanced tools that were hardware-exclusive at first).
- Final round of bug fixes and optimizations before going stable.
- More polishing for the camera, connectivity, and daily smoothness.
The beta program has since expanded beyond the S25 series to older models like the S24, S23, foldables, and even some FE and Tab devices, but the S25 lineup got the most builds and earliest access.

Source – Samsung Mobile Press
When will the stable One UI 8.5 update come for the Galaxy S25 series?
We are getting close. According to reliable leaks and even some Samsung support chats, the stable One UI 8.5 version is starting to roll out on April 30, 2026, first in South Korea. Global rollout (including the US and other regions) should follow shortly after, likely around May 4, 2026.
The S25 series (including S25, S25+, S25 Ultra, and probably the FE/Edge variants) should be in the first wave. The stable build will include all the features and fixes from the betas, plus final optimizations.
Since the Galaxy S26 series already ships with stable One UI 8.5, Samsung has had time to refine it well. A quick tip:
If you are on the beta, you will likely get the stable update automatically once it drops (or you can unenroll and wait for it). For everyone else on the S25 series, just a couple more weeks, and you will get the stable version without joining the beta program.
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