Samsung One UI 9 update: Galaxy S26, S25 Ultra, and S24 Ultra timeline

The stable release of Samsung One UI 9 is approaching. The Galaxy S26 Ultra, S26, and S26 Plus will receive the update first, and stable firmware has been spotted on Samsung’s servers. The S25 series recently joined the test program, with the stable release expected to roll out after the S26 series. The S24 Ultra has also entered testing. One UI 9 is expected to bring changes including a customizable interface, new AI and security features, and power savings from lowering the LTPO panel’s static refresh rate to as low as 20 Hz.