Samsung’s One UI 8.5 beta testing has encountered a significant hurdle, with the highly anticipated Beta 4 release facing an indefinite delay. Nearly a month after third beta landed for the Galaxy S25 series, Beta 4 remains unavailable, and a new report points to serious stability issues in internal builds as the cause.
According to reliable tipster Ice Universe, recent internal builds of One UI 8.5, versions considered very close to the eventual Beta 4, are plagued by critical system-level bugs. The tipster reports that their Galaxy S25 Ultra, running one of these builds, has been experiencing random shutdowns and unexpected restarts without any clear trigger.
While minor glitches are par for the course in beta software, spontaneous reboots signal a much deeper problem. Such behavior often points to kernel-level instabilities, power management flaws, or other fundamental software conflicts that can severely impact the user experience. It’s the kind of issue Samsung’s engineers must resolve completely before a new build can be deemed safe for public beta testers.
This development suggests the wait for Beta 4 could extend for several more weeks. Samsung is undoubtedly prioritizing a fix for these critical bugs to ensure a stable foundation before continuing the public testing phase. Pushing an update with these known issues would be counterproductive, causing more problems for testers than it would solve.
The delay puts a sharper focus on the imminent Galaxy S26 series launch, which is heavily rumored for February 25. One UI 8.5 is expected to debut in its stable form on these new flagships. This timeline underscores the importance of resolving these internal build instabilities promptly to avoid impacting the flagship launch schedule.
For now, Galaxy S25 beta testers will need to remain on the Beta 3 build. We’ll be monitoring the situation closely and will provide an update as soon as Samsung begins rolling out Beta 4 to participants.
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