Samsung Expands One UI 8.5 Beta Testing to Galaxy S23 Ultra and New Folds

Samsung has begun testing its next major software update. The company is rolling out One UI 8.5 beta for several flagship phones. This includes the Galaxy S23 Ultra, Galaxy Z Flip 6, and Galaxy Z Fold 6.

The move follows the initial beta release for the new Galaxy S25 series. It signals a wider deployment is coming soon. According to firmware data, the testing phase is now active.

Firmware Details Confirm Widespread Testing

A new firmware build was spotted on Samsung’s servers. The version code is S918BXXU8FYLB. This code confirms it is meant for the Galaxy S23 Ultra.

Additional builds were also identified. Versions ending in DYLB were found for the Z Flip 6 and Z Fold 6. These builds are all based on the upcoming One UI 8.5 software.

This testing phase is crucial for stability. Samsung will gather user feedback from beta testers. It helps polish the final public release.

Expected Timeline and Key Features

The stable release is projected for early 2026. It could align with the Galaxy S26 series launch. Samsung plans several more beta updates before then.

One UI 8.5 is based on Android 16. It introduces a fully customizable Quick Panel. The update also refreshes the design of stock apps.

Other improvements include Auracast enhancements and Storage Share. The lock screen gets more clock widget options. A new time zone converter is added to the Clock app.

The expansion of the One UI 8.5 beta program is a positive step for millions of Samsung users. It promises a more refined and feature-rich experience for recent high-end models. This update will bring significant customization power directly to your pocket.

Thought you’d like to know

Which phones are getting the One UI 8.5 beta now?

Samsung is now testing One UI 8.5 on the Galaxy S23 Ultra, Galaxy Z Flip 6, and Galaxy Z Fold 6. This is in addition to the Galaxy S25 series, which received the first beta.

When will the stable One UI 8.5 update be released?

The public release is expected in early 2026. It will likely follow several beta versions and may coincide with the launch of the Galaxy S26 series.

What is the biggest new feature in One UI 8.5?

A completely customizable Quick Panel is a major highlight. Users can rearrange and resize toggles to fit their preferences perfectly.

Is One UI 8.5 based on a new Android version?

Yes, it is built upon Google’s Android 16 operating system. It layers Samsung’s own interface and features on top of the core Android experience.

Will older phones like the Galaxy S22 get this update?

Samsung has not confirmed the full rollout list yet. Typically, phones that received the previous major Android update remain eligible for the next.