The Samsung Galaxy S25, Galaxy S25 Plus, and Galaxy S25 Ultra are receiving the One UI 8.5 Beta 2 update in Korea. This update brings important fixes for camera functionality. The Galaxy S25 lineup received this update about half a month after the One UI 8.5 beta program officially began on December 8th.

One UI 8.5 Beta 2 update for the Samsung Galaxy S25 series in Korea can be identified via the build version ending with ZYLH. Users will have to download around a 1.1GB package to install the update.

Android 16-based One UI 8.5 Beta 2 brings multiple fixes to the Galaxy S25 series. The update also has the December 2025 security patch, making the device run the latest patch. As always, the software is currently available in South Korea, with expansion to three more countries expected soon.

Here’s the full changelog for the update:

• Improved the issue of quick panel settings initializing intermittently when booting.
• Improved errors such as quick panel menu screen icon spacing and location.
• Improved the issue of photos organized into gallery group folders being moved to the first album page.
• Improved the stuttering issue when pressing the “More View” menu during a call.
• Improved the intermittent rebooting issue.
• Improved the issue where the volume up button does not work under certain conditions.
• Improved the issue of sound generation in the device when making a call with a Bluetooth car kit connection under certain conditions.
• Improved issues where multiple third-party apps are forcibly terminated while in use.
• Stabilized software through multiple app updates, such as the camera.

Galaxy S25 users can sign up for the beta program with the Beta 2 release. This can be done through the Samsung Members app and by filling out the enrollment form. Users who are already on Beta 1 can update their software to switch to the second beta by opening Settings >> Software Update >> Download and install.

Samsung has begun rolling out the December 2025 security update for the Galaxy S23, Galaxy S23 Plus, and Galaxy S23 Ultra. Right now, the update is available for users in Korea, and it will soon be available in other countries as well.

Users of the Galaxy S23 series can verify the December  2025 security update via One UI build versions:

• Galaxy S23 – S911NKSS6EYL1
• Galaxy S23 Plus – S916NKSS6EYL1
• Galaxy S23 Ultra – S918NKSS6EYL1

The December 2025 security patch brings important security improvements to your device. A total of 68 security vulnerabilities discovered by Samsung and Google have been addressed. These improvements help protect your phone from potential threats and enhance your privacy.

Along with security improvements, this update also includes minor performance and stability enhancements. This will make your phone run more smoothly and reliably. The update is approximately 421 MB in size, so it’s recommended to download it over Wi-Fi to avoid excessive mobile data charges.

To download the December 2025 security update on your Galaxy S23 series device, go to your phone’s Settings >> tap on Software update >> select Download and install. Once the download is complete, tap Install now, and your phone will restart with the latest update.

This December 2025 security patch is based on Android 16 and One UI 8, but Samsung is also preparing the One UI 8.5 update, which will bring even more features to the Galaxy S23 series in the future. Stay tuned.

After releasing the  One UI 8.5 beta program for the Galaxy S25 series today, the Samsung Galaxy S25 FE smartphone has now been added to the One UI 8.5 internal testing device group. Along with the One UI 8.5 beta program, the Korean tech giant is also working on preparing this major update for other Galaxy devices.

One UI 8.5 Beta introduces numerous new features, enhanced Galaxy AI tools, an improved user interface, and improved productivity, privacy, and performance across the Galaxy ecosystem. As you receive the Beta build, you may encounter bugs and battery-draining issues.

Tarun Vats has spotted a new One UI 8.5 testing firmware version, S731BXXU3BYLD, for the Samsung Galaxy S25 FE. The Galaxy S25 FE launched with One UI 8.0 pre-installed, and the One UI 8.5 update will be the minor One UI upgrade.

The One UI 8.5 beta update is currently available in only a few countries for the Samsung Galaxy S25, Galaxy S25 Plus, and Galaxy S25 Ultra. This lets users try out new features before the stable release. A new testing build suggests that Samsung Galaxy S25 FE users will receive this major update directly when the stable version is released.

In addition, Samsung has also confirmed that it will launch the Galaxy S26 series next year with the One UI 8.5 update Pre-installed. This means that Galaxy S25 FE users will receive this major update sometime afterward.