Samsung Galaxy S26 One UI 9.0 Beta 4 Update: Full Changelog & How to Install

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Samsung has begun rolling out the One UI 9.0 Beta 4 update for the Galaxy S26 series in India, marking the latest step in the company’s software development cycle for its flagship devices. The update, which includes bug fixes and performance improvements, arrives a week after Samsung outlined its release schedule for the beta program. The rollout follows the inclusion of the July 2026 security patch, enhancing device security ahead of broader global distribution. Text
The One UI 9.0 Beta 4 update carries firmware version S948BXXU4ZZG4 and has a file size of approximately 1.25GB. It addresses multiple usability issues, including a fix for an anomaly where the clock size appears distorted during lock screen rotations. Other improvements target stability during privacy display routines, navigation bar functionality in gaming scenarios, and performance of the Quick Panel interface. The update also resolves a bug affecting Bluetooth audio volume adjustments when connecting to vehicle systems via the Routines app. Text
Users enrolled in the One UI 9.0 Beta Program can access the update by navigating to Settings > Software update and selecting “Check for updates.” Once downloaded, the installation process requires a restart, after which the device will apply the changes. Samsung has not yet confirmed the timeline for expanding the beta to other regions, though the update’s initial availability in India suggests a phased rollout. The company is expected to issue additional beta updates for the Galaxy S26 series ahead of the launch of the Galaxy Z Flip 8 and Galaxy Z Fold 8, which are anticipated to debut later in 2026. Text
The July 2026 security patch included in the update underscores growing emphasis on device security in the Android ecosystem. Text
For users, the update offers a mix of practical fixes and subtle performance enhancements. While the changelog does not mention significant UI overhauls, the addressed issues—such as navigation bar disruptions during gaming—could improve overall user experience. The inclusion of the July 2026 patch also ensures devices remain protected against emerging threats, a critical consideration as mobile devices handle increasingly sensitive data. With the Galaxy Z Flip 8 and Z Fold 8 expected to launch in late 2026, the One UI 9.0 Beta 4 serves as a bridge between current software capabilities and upcoming device features. Text
As the beta program progresses, users are advised to back up data before installing updates, a standard precaution for experimental software.