Samsung has reportedly begun early testing of One UI 9.5 on the upcoming Galaxy S27 Ultra, according to a build number spotted on X. The discovery suggests that the software update is in development ahead of the device's official release. The build number linked to the Galaxy S27 Ultra indicates that the One UI 9.5 version is being tested on an unreleased flagship model. This development comes as part of Samsung’s ongoing efforts to refine its user interface for the latest flagship smartphones. The presence of One UI 9.5 on the Galaxy S27 Ultra may signal improvements in performance, design, or features compared to previous versions. The testing phase is likely part of Samsung’s broader strategy to ensure a smooth user experience before the device launches. (notebookcheck.net)