Galaxy S25 One UI 8.5 Beta 4 Changelog Details Bug Fixes and Bixby Update
Samsung is expected to release the fourth beta version of One UI 8.5, based on Android 16 QPR2, for the Galaxy S25, Galaxy S25+, and Galaxy S25 Ultra in the coming days. Information regarding the firmware version and a detailed changelog has now emerged, providing insight into the improvements testers can anticipate.
Firmware and Key Changes
The update is reported to carry firmware version ZZAB. The changelog outlines five specific modifications aimed at refining the user experience and resolving known issues from previous beta builds.
- Applied Bixby update version: The update includes a new version of Samsung's Bixby assistant, though specific feature details are not provided in the changelog.
- Fixed an issue when clicking search history in the phone app: This resolves a bug that occurred when users interacted with their call history within the dialer application.
- Resolved the problem where calls switch to the device under specific conditions while using a BT headset: A fix for an erratic Bluetooth behavior that could unexpectedly transfer audio from a connected headset back to the phone's speaker during calls.
- Fixed an issue when pasting phone numbers into the keypad after clicking a call link: Addresses a problem where pasting a phone number into the dialer, often from a message or webpage link, did not function correctly.
- Fixed an issue where AI Select does not automatically close when “Copy” is selected: Corrects a minor interface bug within the AI-powered object selection tool, where the selection overlay would persist after the copy action was initiated.
Focus on Stability and Polish
The nature of the changes in Beta 4 suggests Samsung's development focus is shifting toward stability and bug resolution as the software matures. The fixes target core communication functions—the phone app and Bluetooth calling—which are critical for daily device reliability. The adjustment to the AI Select tool also indicates attention to detail in newer, AI-driven features introduced with One UI 8.5.
This beta follows the typical software development cycle, where later stages prioritize squashing bugs identified by early testers over introducing major new features. The inclusion of a Bixby update hints at ongoing backend improvements to Samsung's ecosystem services.
Conclusion
The release of the One UI 8.5 Beta 4 changelog for the Galaxy S25 series signals that the final stable version of the update is drawing closer. The listed fixes address practical, user-facing issues, particularly around calling and interface interactions. For participants in the beta program, this update should deliver a more polished and reliable experience. The broader rollout of One UI 8.5 to all Galaxy S25 users is anticipated to follow after this and subsequent beta testing phases are complete.