The Samsung Galaxy S23 series has officially started receiving the January 2026 security update in South Korea, bringing the latest security enhancements and system stability improvements. The update is currently rolling out with the build number S918NKSS6EZA1, and it is available for Galaxy S23, Galaxy S23+, and Galaxy S23 Ultra models in the region.
According to the updated information shown in the image, the new firmware is based on One UI 8.0 and Android 16. The installation package size is around 391MB, making it a relatively small update that focuses mainly on security and performance optimizations. Samsung has included the January 1, 2026, security patch level, which fixes several system vulnerabilities and improves overall device protection.
The changelog highlights that the update applies security-related stabilization code, ensuring a smoother and more reliable user experience. While no major new features are introduced, such monthly updates are essential for maintaining long-term device health and protecting user data from potential threats.
As usual, the rollout has started in Samsung’s home market, South Korea, and is expected to expand to other regions within the next week, including India, Europe, and the United States. Users can check for the update by going to Settings, then Software update, and tapping on Download and install.
Samsung continues to demonstrate its commitment to timely software updates, keeping its flagship Galaxy S series devices secure and up to date with the latest Android ecosystem improvements.