Samsung has started rolling out the second beta of One UI 8.5 for the Galaxy Z Fold 6 and Galaxy Z Flip 6, marking another step in the software test cycle for its latest foldable phones. The update follows the initial beta release based on Android 16 QPR2 and is currently being distributed first in South Korea, which remains Samsung’s usual starting point for early software trials.
The new build does not appear to introduce major features. Instead, Samsung has focused on fixing six bugs that can affect daily use, from display glitches to gaming heat concerns, according to the changelog shared in reports and linked to a translated Korean release note. The firmware version ends with the code ZZD3, which helps identify this second beta package.
What Samsung fixed in the second beta
The update is centered on stability rather than visual changes, which is common at this stage of beta development. Early software builds usually help Samsung test system compatibility first, while later builds refine hardware behavior, interface issues, and overall reliability.
The six fixes included in the changelog are as follows:
- A problem where multipack images could not be deleted from the cover screen.
- A black background issue that appeared when opening folders.
- Excessive heat while playing games.
- A black background issue that returned after restarting the device following lock screen setup.
- A top bar that did not disappear while using apps.
- A phone screen cracking issue.
These changes point to a beta release that targets highly visible bugs. Several of them involve interface behavior, which means users could notice them immediately during normal navigation.
Why these fixes matter for foldable users
Foldable phones rely heavily on software polish because their main value comes from the interaction between flexible hardware and adaptive software. Small bugs, such as a top bar that stays visible or folders that open with a black background, can break the smooth experience that premium foldables are expected to deliver.
The heating fix is equally important. On a device like the Galaxy Z Fold 6 or Galaxy Z Flip 6, heat affects comfort in hand, long-term performance, and how stable the device feels during gaming or other demanding tasks. That makes thermal optimization a high-priority item in any later-stage beta.
The mention of a “phone screen cracking issue” has also drawn attention. Samsung has not explained the technical meaning behind that line in detail, so it remains unclear whether the note refers to a visual bug, a rendering issue, or a literal translation from the original changelog. Even so, its inclusion suggests Samsung is addressing a problem considered important enough to list in the official notes.
South Korea remains the first test market
Samsung often uses South Korea as the first launch region for beta software, and this release follows the same pattern. That approach allows the company to gather feedback from a controlled user base before expanding availability to other markets through Samsung Members.
For users outside South Korea, the second beta is still a sign that development is moving forward. If no major issues appear in this round of testing, Samsung is likely to continue refining the software before widening access to more regions and more beta participants.
One UI 8.5 is moving toward maturity
One UI 8.5 is reported to be built on Android 16 QPR2, showing that Samsung is aligning its foldable software with Google’s next Android release cycle. The current beta phase suggests the company is now focused on smoothing out operational issues before any broader rollout.
That direction matters for the Galaxy Z Fold 6 and Galaxy Z Flip 6, which are expected to benefit most from better stability, improved thermal behavior, and cleaner interface performance. For beta testers, the ZZD3 build is less about new features and more about making the foldable experience feel more reliable in everyday use.
Samsung’s second One UI 8.5 beta makes it clear that the company is now in the refinement stage, with the most noticeable work going into bug fixes that affect display behavior, app use, lock screen handling, and gaming performance. As the software testing expands, the next builds will likely show whether these fixes are enough to prepare the Galaxy Z Fold 6 and Galaxy Z Flip 6 for a more stable public release.