Samsung has begun rolling out the One UI 8 Beta 2 update for the Galaxy S23 series in the United Kingdom. The update, carrying the ZYI5 build, is now live for the Galaxy S23, S23+, and S23 Ultra, arriving shortly after the first beta release in South Korea and India.
A Look at the Update Screen
When checking Samsung Settings → Software update, the page header reads “Software update” with a back arrow, while the status line shows “Download paused.” A large One UI banner sits above the changelog, displayed inside a rounded white card with bold section titles and checkbox bullets in typical Samsung style. The text is in English, with a few lowercase terms like fota and Dex suggesting draft or beta notes.
Version Details and Build Number
Under the “ Version” section, the screen lists:
- One UI 8, ZYI5
Build tags beginning with “Z” usually indicate a pre-release or beta build, which confirms this rollout.
Fixes Included in Beta 2

The “Bugs that have been fixed” section highlights three important changes:
- Fixed random phone resets during everyday use.
- Fixed DeX settings not being saved after a FOTA update, ensuring preferences now remain intact.
- Fixed an issue with the Galaxy Watch7 clock weather app not updating correctly. (The note is cut off, so the exact detail is unclear.)
Quick Take
This update focuses on stability and everyday reliability. With smoother performance, better DeX support, and Watch7 sync improvements, Beta 2 feels like a meaningful step toward the stable One UI 8 (Android 16) release, which could be close.






