What One UI 9 is
One UI is the software interface developed by Samsung Electronics for its Android devices. It runs on top of Android and provides Samsung’s visual layer and software features. One UI 9.0 is based on Android 17, according to the available information, and includes improved artificial intelligence features.
Samsung designed One UI to bring its software and hardware together and make large-screen smartphones easier to use. One design principle is to place common controls and functions closer to the middle of the screen rather than concentrating them at the top, making them easier to reach.
Release and updates
The question is generally about Samsung’s latest interface version and its arrival on compatible devices. One UI 9.0 debuted on July 22, 2026, with the Galaxy Z Fold 8. Distribution began expanding to other devices on September 16, starting with the Galaxy S26 series; the source reports that this initial rollout also took place in Brazil.
The update is delivered over the air, or OTA. That does not mean every Samsung device will receive the new version: availability depends on compatibility and the rollout schedule announced by the company.
Compatibility and schedule
In October 2026, Samsung published an official list and schedule of devices compatible with Android 17 under One UI 9 on its Japanese website. According to the report, the list covers phones and tablets and applies globally, not just in Japan. The rollout had already begun with the Galaxy S26 series and was later expanded to models from earlier generations.
The complete model list is not included in the available information, so it is not possible to confirm here whether a specific device is eligible or to provide its individual update date. Users should check Samsung’s official list and their device’s update notifications. One UI 9 is Samsung’s interface associated with Android 17, but when it reaches a particular device depends on its model and the rollout schedule.