
SamMobile has shared a first look at an early Galaxy S26 Ultra test build, offering what appears to be one of the earliest public glimpses of One UI 9 running on Samsung’s next flagship phone. The screenshots don’t point to a major visual overhaul, but they do suggest Samsung is still refining the interface in ways that could make everyday use a little easier.
As of now, Samsung still hasn’t officially rolled out One UI 8.5. Based on the company’s usual release pattern, that version is expected to arrive first on the next generation of foldables, namely the Galaxy Z Fold8 and Galaxy Z Flip8, before gradually expanding to older devices. That makes any One UI 9 preview especially early and subject to change.
From the leaked screenshots, the biggest visible adjustment is in the quick panel. Samsung appears to have made the volume and brightness sliders wider and larger, a tweak reportedly meant to improve blind operation and make touch targets easier to hit without staring directly at the screen. It’s a small change, but it could have a real effect on day-to-day usability.
Another interface change appears inside Settings, where Samsung has reportedly split parental controls into a standalone top-level menu. That would make the feature easier to find instead of burying it deeper in the settings structure.

Publicly available information also indicates that the One UI 9 media player adds a new wave-style visual animation, with the audio visualizer changing shape in real time based on the music being played. Samsung Internet is also said to support multiple windows, allowing users to open several sites at once and browse them in a split-style layout that could be particularly useful on foldable devices.
That said, this firmware is still described as extremely early. The report stresses that it should not be treated as a representation of the final version of One UI 9. In fact, parts of the interface still identify the underlying platform as Android 16 rather than the Android 17 version many observers currently expect, which is a good reminder that Samsung is still deep in the development process.
So while the leaked build doesn’t reveal a dramatic redesign for the Galaxy S26 Ultra, it does hint at Samsung’s current priorities: cleaner controls, more visible system elements, and another round of fine-tuning rather than a full reset of the UI.