A new One UI 8.5 beta build has been spotted on Samsung’s internal test servers for the Galaxy S25, indicating that development is actively progressing. The newly detected build carries the version number S938NKSU7ZZAH, which replaces the previous beta build ZZAF that was last seen on January 22. This incremental change from ZZAF to ZZAH strongly suggests that Samsung is preparing the fourth beta release of One UI 8.5.
The appearance of this build has generated fresh optimism among Galaxy S25 beta testers and enthusiasts who have been waiting for the next update. While Samsung has not officially announced Beta 4 yet, such test server activity typically occurs shortly before a wider rollout to registered beta users. This means the update could arrive sooner rather than later, provided internal testing proceeds smoothly.
At the moment, there is no changelog available for the ZZAH build. As with previous beta updates, Samsung may focus on system stability improvements, bug fixes, and fine-tuning overall performance rather than introducing major new features. Battery optimization, smoother animations, and refinements to One UI elements are also areas that often receive attention in later beta stages.
Since One UI 8.5 is still under development, users should expect minor issues until the stable version is released. More details about Beta 4, including supported regions and official changes, are expected to surface soon. Any confirmed information will likely be shared once Samsung makes an announcement or the update goes live for testers.