Samsung Begins Rollout of One UI 8 to Galaxy S25 Series

Samsung has initiated the rollout of its stable One UI 8 update, built on Android 16, for the Galaxy S25 series. The update, approximately 3.8GB in size, carries the version number S938NKSU5BYI3 and includes the September 1, 2025 security patch. Initially available in South Korea, the update is expected to reach users in the US, UK, India, and other regions shortly. Key features highlighted in the changelog include automatic call captioning and the Now Brief functionality. This release marks a significant expansion of Samsung's latest software, which was previously available only on the Galaxy Z Fold 7, Galaxy Z Flip 7, and Galaxy Z Flip 7 FE. Samsung has not specified which devices will receive the stable One UI 8 update in September but has indicated that One UI 8 Watch will extend beyond the Galaxy Watch 8 series later this year.