Samsung Releases Second One UI 8.5 Beta for Galaxy S25 Series with Bug Fixes
Samsung has pushed out the second beta version of its upcoming One UI 8.5 software for the Galaxy S25, S25+, and S25 Ultra. This update marks continued development on the Android 16-based interface, focusing primarily on stability and reliability enhancements for early testers.
Update Details and Regional Expansion
The new beta carries firmware version ending ZYLH and has a download size of approximately 1.1GB for devices already running the first beta. This follows the initial beta release that began on December 8 in select markets. The program is now expanding its geographical reach, with India joining the list of participating countries in this second phase. The same firmware is expected to roll out shortly in Germany, the United Kingdom, and the United States.
For new participants in India, the initial beta download is notably larger at over 4GB and includes the December 2025 security patch alongside the core One UI 8.5 features. Eligible users can access the update through their device's Settings > Software update menu after registering for the beta program.
Focus on Stability and Bug Resolution
This beta iteration is heavily focused on addressing issues reported during the initial testing phase. A leaked changelog suggests the update targets nine specific problem areas to improve the user experience. Key fixes reportedly address intermittent reboots, unresponsive volume buttons under certain conditions, and stuttering in the call interface. The update also aims to resolve issues with the quick settings panel layout, gallery folder organization, and unexpected app terminations.
Beyond bug fixes, Samsung continues to refine core applications, with the camera receiving particular attention for stabilization through multiple app updates. These improvements are designed to create a more polished foundation before the stable public release.
One UI 8.5 Features and Future Roadmap
One UI 8.5 builds upon Android 16 with numerous enhancements. The update introduces expanded lock screen clock customization options, a refreshed design language for Samsung's native applications, and more powerful Galaxy AI image editing tools. Connectivity sees improvements with Bluetooth Auracast and Storage Share, while security is bolstered by a new Theft Protection feature. The Samsung Internet browser also receives a visual overhaul.
The development timeline suggests Samsung may release at least four beta versions before the stable rollout, which is anticipated in early 2026. The Galaxy S26 series is expected to launch with One UI 8.5 pre-installed and may include exclusive features not ported to older devices like the S25 lineup.
Conclusion
The second One UI 8.5 beta represents a significant step toward refining Samsung's next major software update. By addressing critical bugs and expanding testing to more regions, Samsung is gathering valuable feedback to ensure a smooth transition to the stable release. For Galaxy S25 owners participating in the beta program, this update promises a more reliable experience while previewing the interface and AI enhancements coming to Samsung's flagship smartphones in 2026.