Samsung Rolls Out One UI 9 Beta 4 Update to Galaxy S26 Series with Bug Fixes and July 2026 Security Patch

Samsung has officially started rolling out the One UI 9 Beta 4 update for the Galaxy S26 series, bringing a number of bug fixes, performance improvements, and the latest July 2026 Android security patch. The update is around 1.25GB in size and is one of the biggest beta releases Samsung has delivered during the One UI 9 testing program.

One UI 9 Beta 4 Expands to More Countries

The rollout began in India before expanding to several European countries, including Germany, Poland, and the United Kingdom. Beta testers in South Korea have also started receiving the update in phases.

Samsung has also made the update available for eligible Galaxy S26 users in the United States. Depending on the region, the rollout may take a little time to reach all registered beta participants.

July 2026 Security Patch Included

Alongside bug fixes, the latest beta update also includes the July 2026 Android security patch, improving system security and overall stability. Samsung aims to deliver a smoother and more reliable experience as it moves closer to the stable One UI 9 release.

Build Version

For Galaxy S26, Galaxy S26+, and Galaxy S26 Ultra users in the beta program, the update carries a firmware version ending in ZZG4.

To check if the update is available, go to:

Settings > Software update > Download and install

What’s New in One UI 9 Beta 4?

Samsung has focused mainly on fixing issues reported by beta testers rather than introducing new features. The update improves several areas of the user interface and overall system performance.

One UI 9 Beta 4 Changelog

• Fixed an issue where the lock screen clock appeared incorrectly when rotating the phone between portrait and landscape mode.
• Resolved a bug affecting the Privacy Display toggle when enabled through Quick Panel or Settings while a routine was active.
• Fixed a problem that caused the navigation bar to disappear during certain games.
• Improved Quick Panel opening and closing performance for a smoother experience.
• Corrected timer notification UI issues where numbers could appear cut off or unstable in Live Notifications.
• Fixed a Routines app bug that prevented Bluetooth audio media volume actions from working correctly when connected to a vehicle’s Bluetooth system.

A More Stable Beta Experience

While One UI 9 Beta 4 doesn’t introduce major new features, it focuses on polishing the software with important stability improvements and bug fixes. Users enrolled in the beta program should notice smoother performance, better UI responsiveness, and fewer software issues in day-to-day use.

As Samsung continues testing One UI 9, this update brings the software another step closer to its official stable release for the Galaxy S26 lineup.