Samsung has started distributing the second beta version of One UI 8.5 for the Galaxy S25 series, marking a significant step in improving its operating system before the official launch. Identificada via ZYLH firmware, this update was released on December 22, 2025 and is available for the models Galaxy S25, Galaxy S25+ and Galaxy S25
The company has expanded the availability of the beta program to include additional regions such as Índia and Polônia, democratizing access to testing phases and ensuring more comprehensive feedback. Usuários of these new markets can now participate directly in Beta 2, which not only incorporates the functionality of the initial version, but also introduces a series of specific fixes and optimizations.
With an approximate weight of 1.1 GB for subsequent downloads, the update is crucial to refining the user experience, addressing the inconsistencies and flaws identified in the first phase of testing. The improvements aim to ensure a more stable and responsive system, preparing the ground for the final version of One UI 8.5.
System stabilization and interface improvements
The update addressed and resolved intermittent issues related to panel quick settings initialization during system startup. Essa fix is essential to ensure that the quick panel loads consistently and without delays or random crashes, providing a smoother user experience from the first moment.
Additionally, precise adjustments were implemented in the spacing and positions of the icons present in the quick access menu, aiming to significantly improve the visual usability of the interface. Users had reported inconsistencies in the quick panel layout in the first beta, and with these changes, the interface becomes more harmonious and consistent across different device screen resolutions.
Gallery optimization and photography features
Samsung fixed bugs that prevented the correct movement of photos organized in group folders to the main album page in Galeria. Agora, images remain in the desired position after edits or reorganization, facilitating daily use of the photo library for those who maintain extensive albums and need efficient management.
Beta 2 also restored camera modes that were missing from the previous version, such as Gravação Dupla and Tomada Única, which are now accessible via Camera Assistant with advanced options. In addition, professional exposure, focus and white balance controls have been improved, and the camera now allows customizable presets that can be shared, bringing the photography experience closer to dedicated tools.
Enhancements to connectivity and external applications
The interruption that occurred when accessing the “More views” menu during phone calls has been eliminated, ensuring more stable behavior and avoiding unexpected crashes. Essas improvements are a relief for beta testers who reported stability issues in intensive usage scenarios.
Intermittent device restart issues have been resolved, contributing to a more robust and reliable system. The update stabilizes the system in situations of prolonged use, minimizing the occurrence of random reboots.
The Samsung has also corrected how the volume up button works in specific conditions, ensuring a consistent response in a variety of situations. Melhorias have been implemented to generate sound during calls connected via Bluetooth in vehicles, providing more reliable audio for in-car hands-free users and reducing common frustrations.
Several third-party apps that were forced to close during use have had the issue resolved, and the update includes stabilization through multiple app updates, including the camera app. The focus on compatibility improves the experience with external software, showing Samsung’s commitment to monitoring feedback for future betas.
Beta Program Schedule and Expansion
The beta program for One UI 8.5 began on December 8, 2025, covering countries such as Coreia, Sul, Alemanha, Reino Unido and Estados Unidos. The availability of Beta 2 represents a significant expansion of participation to more markets, such as Índia and Polônia, allowing a larger user base to contribute to the development of the software.
Registrations to participate in the program continue to be carried out through the Samsung Members application, reinforcing the company’s strategy of engaging its user community in the improvement process. The contribution of these testers is essential to identify and fix flaws before public release.
The stable version of One UI 8.5 is expected in the first quarter of 2026, projecting its release in conjunction with the Galaxy S26 series. Samsung indicates that more beta versions may be released before the final version, demonstrating a rigorous testing and refinement process.
Technical details of the update
The ZYLH firmware, which identifies One UI 8.5 Beta 2, represents a robust package of optimizations and fixes. With a download size of approximately 1.1 GB for subsequent updates, it ranges from user interface improvements to deep tweaks to the system kernel to ensure greater stability and efficiency. Samsung has focused on an iterative approach, where each beta builds on feedback from the previous one, aiming to progressively eliminate bugs and optimize features such as battery management and overall hardware performance.
User feedback and future steps
The role of beta testers is vital in this process, providing valuable information that shapes the final version of the software. Samsung continues to encourage detailed reporting on any issues or suggestions, ensuring that One UI 8.5 is released with the highest quality and meets the expectations of Galaxy S25 series users.
