Samsung continues to refine its upcoming software release with the fifth beta version of One UI 8.5. This latest build arrives just weeks after the fourth beta hit compatible devices, showing the company's aggressive push to polish the interface before its public debut.
What's New in Beta 5
The standout feature in this release is an upgraded Bixby. Samsung's digital assistant gets significant AI enhancements that improve response accuracy and contextual understanding. Early testers report smoother interactions and better voice recognition compared to previous iterations.
The firmware package weighs between 546-553MB depending on your device model. It carries the February 5, 2026 security patch level, which addresses several vulnerabilities discovered in earlier Android builds. Samsung maintains its monthly security update schedule even for beta software.
Rollout Details and Availability
This beta wave targets five key markets: the United States, United Kingdom, India, Germany, and South Korea. Users enrolled in Samsung's beta program can download the update through their device settings. The firmware build number ends in ZZAN, making it easy to identify if you're running the latest version.
Galaxy S25+ and other S25 series devices are currently the only hardware eligible for this beta. Samsung typically limits early access to its newest flagships before expanding to older models.
Release Timeline and Expectations
Samsung plans to launch One UI 8.5 alongside the Galaxy S26 series on February 25. The stable version will ship pre-installed on the Galaxy S26, S26+, and S26 Ultra. Current Galaxy S25 owners can expect the final build shortly after the new flagships hit retail shelves.
This beta cycle demonstrates Samsung's commitment to thorough testing before major releases. The company typically runs four to six beta rounds for significant Android updates. With the fifth beta now available, we're approaching the final stretch before the official launch.
Should You Join the Beta?
If you own a Galaxy S25 device and don't mind occasional bugs, the beta program offers an early look at upcoming features. However, daily drivers might want to wait for the stable release. Beta software can impact battery life, app compatibility, and overall system stability.
To enroll, open the Samsung Members app and look for the One UI 8.5 beta banner. Space is limited, so interested users should act quickly when registration opens.