Samsung is putting the finishing touches on One UI 8.5, with the fourth beta build now imminent for Galaxy S25 testers. A leaked changelog for the build, identified internally as ZZAB, reveals a development shift from introducing new features to refining the core user experience. This update appears squarely focused on eliminating some of the more persistent annoyances that have surfaced during the beta program.
The most significant fixes target core communication functions. According to the leaked changelog shared by Tarun Vats, Beta 4 resolves a vexing issue within the Phone app where clicking on search history could cause unexpected crashes. For users who frequently redial numbers from their call logs, this fix should bring much-needed stability.
Another critical repair addresses a Bluetooth headache experienced by some testers: calls randomly switching from a connected headset or earbuds directly to the phone’s speaker. This glitch, which occurred under specific conditions, is now marked as resolved, promising more reliable wireless calling. The update also smooths out the process of dialing from messages or emails by fixing a bug that prevented call links from pasting correctly into the keypad.
Beyond calling, the update applies subtle but meaningful quality-of-life improvements. The AI Select feature, which allows users to copy text from images or apps, now behaves more intelligently. Previously, the AI Select interface would stubbornly remain on-screen after the “Copy” action was selected. In Beta 4, it closes automatically, creating a smoother and less intrusive workflow.
The changelog also notes that a Bixby update has been applied, though specifics are light. This typically points to backend improvements aimed at enhancing the assistant’s responsiveness and its integration with other system components, like the newly deepened partnership with Perplexity.
One UI 8.5 Beta 4 changelog
Bugs that have been fixed
Applied Bixby update
Fixed an issue when clicking search history in the phone app
Resolved the problem where calls switch to the device under specific conditions while using a BT headset
Fixed an issue when pasting phone numbers into the keypad after clicking a call link
Fixed an issue where AI Select does not automatically close when "Copy" is selected
This build signals that Samsung is entering the final stretch of stabilization for One UI 8.5. By addressing these foundational bugs, the company is ensuring the software is buttery-smooth for its debut on the Galaxy S26 series, expected next month. For current beta users, the path to install the update once it lands is straightforward: navigate to Settings > Software update > Download and install.
With the beta now focusing on polish, our attention is turning to the official rollout timeline. We expect Samsung to detail the full One UI 8.5 feature set and release schedule alongside the Galaxy S26 unveiling, rumored for February.
