Galaxy Z Flip 5 users enrolled in Samsung’s beta program are now seeing One UI 8.5 Beta 2 arrive, marking the next step in the company’s software refinement process for the foldable device. The update first appeared in Korea, and early reports point to a build focused less on new features and more on fixing issues that affected everyday use.
The beta package comes with build number F731NKSU6ZZDN and a file size of 764.73 MB. That size suggests Samsung is pushing a substantial maintenance update, with attention centered on stability improvements for core functions such as calls, camera performance, and interface behavior.
Software rollout begins in Korea
Early sightings of the update were reported in Korea, which fits Samsung’s usual pattern for beta distribution. The rollout remains gradual, and there is still no official detail on which market will receive it next.
That staged approach is common for beta releases because it allows Samsung to observe early stability before widening availability. For now, the update remains limited to users already enrolled in the program.
Call quality and contact display receive fixes
A major part of the changelog targets telephony issues that could affect daily communication. One of the reported fixes addresses low call volume from the speaker, along with audio quality concerns when the phone is used inside a vehicle.
Samsung also corrected a bug that prevented contact images and incoming call information from appearing properly when users called saved contacts. While the issue did not block calling itself, it could still disrupt the normal experience during routine use.
Another correction was made to the subtitle text for the setting “Show brief pop-ups even when the screen is off.” Small interface fixes like this matter during beta testing because they help keep menus clear and behavior consistent across the system.
Foldable-specific behavior is also improved
Because the Galaxy Z Flip 5 has a different usage pattern from a standard phone, Samsung also addressed a transition issue tied to saving contacts while the device was in folder mode or with the cover closed. That detail points to software tuning that reflects the foldable form factor, where the main display and cover screen often alternate during daily tasks.
Smooth transitions are particularly important on a device like the Galaxy Z Flip 5, since the experience depends heavily on how well the software handles changes between folded and unfolded states. The update suggests Samsung is refining those moments rather than focusing on visible feature additions.
Camera stability is part of the update
The Camera app is included in the list of fixes as well. In the translated changelog, Samsung notes a correction for an operational error that occurred when the Camera application was launched.
The source does not provide deeper technical details, but the presence of a camera-related fix is notable because imaging is one of the main features people rely on in a foldable device. Stability in this area remains important for users who expect the camera to work consistently without disruptions.
How eligible users can check the update
Galaxy Z Flip 5 owners in Korea who are part of the beta program can look for the update through the device settings. The path is Settings > Software update > Download and install.
After the download finishes, the Install now option can be selected to begin installation. Once the process completes, the device will reboot into the latest beta build.
The current update details are as follows:
- Device: Galaxy Z Flip 5
- Version: One UI 8.5 Beta 2
- Initial region: Korea
- Build number: F731NKSU6ZZDN
- Update size: 764.73 MB
With this release, Samsung is continuing to sharpen One UI 8.5 for the Galaxy Z Flip 5 through fixes that reach calling, contact handling, interface text, foldable-specific transitions, and camera operation.
