Summary
- Samsung has released a third One UI 8 beta for Galaxy S25 models with bug fixes and new features.
- This beta addresses issues like keyboard input problems, gesture typing, and S-Pen glitches.
- The first Wear OS 6 (One UI 8) beta is available for the Galaxy Watch Ultra and Galaxy Watch 7.
Samsung just released two more big One UI 8 betas for select Galaxy phones and watches. After kicking off the Android 16 (One UI 8) beta for the Galaxy S25 in May, Samsung's been busy with a second and now a third beta. Additionally, the first Wear OS 6 beta based on One UI 8 is now available for select Galaxy Watch models.
The third beta is roughly 3.6GB in size and is version number S938BXXU4ZYFA, S938BOXM4ZYFA, or S938BXXU4BYFA, depending on the region. We're already seeing this for all Galaxy S25 models in the U.S., UK, Germany, and South Korea, to name a few. Expect more regions and additional devices to get it next.

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The changelog isn't anything major, and nothing substantial immediately stands out. That said, those running the One UI 8 beta will want to upgrade right away for some new features like improvements to the Now Bar, bug fixes, and other enhancements. Samsung specifically mentioned fixing some overlapping issues, keyboard input problems, gesture typing, and S-Pen glitches, along with several other bug fixes, SW stabilization, and support for more apps.
As a reminder, this is still a beta so you may experience problems. We're still waiting for Samsung to allow other devices to join in, not to mention expand the beta program to more users and regions. For now, you can fire up the Samsung Members app, sign in, and look for the On UI 8 beta program banner at the top of the app. When and if enrolled, head to settings and check for updates.
One UI 8 Arrives for the Galaxy Watch

Additionally, and spotted by 9to5Google, Samsung has also begun sending out the first Wear OS 6 beta (in the form of One UI 8) for the Galaxy Watch.
The Galaxy Watch One UI 8 update adds a slew of new health, wellness, and fitness features, along with other tweaks. Some of those include better sleep guidance, a running coach, vascular load monitoring, an Antioxidant Index, and more. But considering this is just the first beta, we anticipate more features and changes will arrive later.
For now, the Wear OS 6 beta is only available for the Galaxy Watch Ultra and Galaxy Watch 7. However, Samsung mentioned that it would eventually roll out for the Galaxy Watch 5, Galaxy Watch 5 Pro, Galaxy Watch 6 (and 6 Classic), and the Galaxy Watch FE.
Like the One UI 8 beta for the Galaxy S25, those with a Galaxy Watch can launch the Samsung Members app, look for the beta program banner, or navigate to the Beta program section. From there, look for the Galaxy Watch Ultra or Galaxy Watch 7 One UI 8 beta, enroll, and wait for the update to hit your device. We'll report back as we learn more.