Samsung has released the stable Android 17-based One UI 9 update for the Galaxy S23 series, Galaxy Z Fold5, and Galaxy Z Flip5. The rollout is currently taking place in South Korea, where Galaxy S23 owners enrolled in the beta program are receiving the first stable package.

The update also covers the Galaxy S23, Galaxy S23+, Galaxy S23 Ultra, Galaxy Z Fold5, and Galaxy Z Flip5. Samsung is expected to extend availability to non-beta users in South Korea and to other regions, although the source material does not provide a schedule for that wider release.

One UI 9 update size and build number

For Galaxy S23 owners who participated in the beta program, the stable release carries build version GZIF and requires a download of less than 500MB. Users moving directly from the previous public software version will receive a much larger package of approximately 3GB.

The difference in download size reflects the update path rather than separate versions of One UI 9. Beta participants already have much of the required software installed, while non-beta devices need to download more of the release.

Galaxy Z Fold5 and Flip5 availability

The Galaxy Z Fold5 and Galaxy Z Flip5 are also receiving the stable One UI 9 update in South Korea. The available information does not specify a build number or download size for the two foldable models.

One UI 9 is based on Android 17, making this a major operating system update for Samsung’s 2023 flagship phones and foldables. Its arrival gives owners of these devices access to Samsung’s latest software generation, although the timing will depend on the user’s region and whether the phone was enrolled in the beta program.

How to check for One UI 9

South Korean owners of the listed phones can check for the update manually if it has not appeared on their devices. Open Settings, select Software update, and choose the option to check for available updates.

Because the rollout is staged, an eligible phone may not show One UI 9 immediately. Users outside South Korea will need to wait until Samsung expands the release to their markets. The update’s availability can also vary between beta and non-beta devices.

The Galaxy S23 series and the Galaxy Z Fold5 and Z Flip5 launched in 2023, so this release extends Samsung’s newest software to another group of older flagship devices rather than limiting it to the company’s latest hardware.