
Good news for Samsung Galaxy S25 Ultra users in the US currently testing out the beta software. The firm continues to carry out its beta program for the latest Android 16-based One UI update. In a new development, the One UI 8 Beta 4 update (build ZYGB) is now rolling out to the Galaxy S25 Ultra. The OTA brings a substantial package of improvements and bug fixes.
Weighing in at 1265.68 MB, this update addresses several nagging issues, aiming to polish the user experience. The changelog reveals a focus on stability and performance.
Changes that One UI 8 Beta 4 brings to the Samsung Galaxy S25 Ultra
One notable addition is an emergency update feature for Samsung IMS Service. This might prompt users for consent to update and restart.
For those who rely on DeX, the update now supports full-screen switching while playing videos. So, the desktop-like experience is now even smoother. If you’ve been having trouble with Galaxy AI Reply Suggestions, the update promises a fix for those operation errors. Bixby users will also be pleased, as the loading issue when Bixby routine commands are triggered by voice has been improved.
The firmware also addresses visual glitches. The list includes a display issue in the quick launch icon area on the lock screen. So, now everything looks like it should. For car enthusiasts, an editing error with iNavi dashcam videos in the Gallery app has been resolved, making it easier to manage your footage.
Connectivity and accessibility also see improvements. The frustrating message “Fingerprint sensor not responding” appearing on the lock screen has been fixed. Additionally, a specific outgoing call failure when attempting a swipe call from the Contacts list with TalkBack enabled is now resolved.
Camera enthusiasts will find improvements as well. The company has resolved the flickering issue of the central vertical/horizontal level gauge when switching between front and rear cameras. This will lead to a more stable framing experience. Finally, overall software stability has been enhanced through updates to several apps.

Google and Samsung following a similar pace of development
This beta update shows Google and Samsung are actively refining One UI 8. In fact, the South Korean giant has shifted its software development model to the same one Google is using to release new Android updates more quickly. So, you can expect a similar pace of updates in One UI 8 from now on. That said, let’s hope that the first stable One UI 8 firmware does not show the problems reported by users of Google Pixel devices running Android 16.
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