Samsung’s Fourth One UI 9 Beta for Galaxy S26 Series: Stability and Security Enhancements
Samsung has released the fourth beta of One UI 9 for the Galaxy S26 series, bringing a new round of bug fixes and improvements ahead of the software’s official debut later this month.
The update has started rolling out in India, with firmware ending in ZZG4, and is available to users already enrolled in Samsung’s One UI 9 beta program. At around 1.25 GB, this is a large download.
Refining the User Experience
Rather than introducing major new features, this latest beta focuses on stability as Samsung enters the final stretch before launch. According to the changelog, the company fixed a series of issues affecting core parts of the interface. These include issues with clock size, quick panel, navigation bar, timer notifications, and the Routines app.
The update also bundles the July 5, 2026 Android security patch, ensuring testers receive the latest security fixes as well as software improvements.
Progress and Expectations
The timing isn’t particularly surprising. Samsung has been constantly tweaking One UI 9 over the past few months. The third beta arrived almost exactly a month ago. Therefore, a fourth beta at this point suggests that the company is ironing out the remaining rough edges before making the software widely available.
One UI 9 is expected to make its official debut alongside Samsung’s next generation of foldable devices at Galaxy Unpacked on July 22. At this event, the company is expected to unveil the Galaxy Z Fold 8, Galaxy Z Fold 8 Ultra, and Galaxy Z Flip 8. These devices will be the first to ship with the new software out of the box, with older Galaxy smartphones and tablets receiving it in due course.
Beta Rollout and Future Prospects
Although Samsung hasn’t confirmed whether another beta version will follow, this release suggests the software is nearing its final form.
As with previous beta releases, availability remains limited to registered participants in supported regions. However, the rollout will likely expand gradually. Galaxy S26 owners enrolled in the program should see the update appear live in the coming days if it hasn’t already reached their device.
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