On October 14, 2026, Samsung began rolling out the stable version of One UI 9 built on Android 17 to the Galaxy S23 series. The One UI 9 and Android 17 update is currently available only in South Korea and exclusively to users who previously tested One UI 9 in the beta program on their Galaxy S23. Android Authority reports this, citing a post on the Samsung Community forums and a report by tipster Tarun Vats on the X network.
One UI 9 and Android 17 update: who gets it
The distribution is restricted in two ways: geographically to South Korea and by user group to beta testing participants. Based on the rollout pattern for previous devices, it is expected that Galaxy S23 owners in other parts of the world will receive the update within one to two weeks.
Wider wave of updates
Samsung launched stable One UI 9 on Android 17 back in late September. In about three weeks, it reached several older flagship models as well as the latest phone in the Galaxy A series. The Galaxy S24 series received the update in the United States just a few days before the Galaxy S23. On September 28, 2026, One UI 9.0 started for the Galaxy S25, Galaxy Z Fold 7, and Galaxy Z Flip 7 in South Korea.
What remains unclear
Release notes for the Korean variant of the Galaxy S23 have not been updated, so it is unclear whether the phones will receive the full suite of new artificial intelligence features or just visual enhancements compared to One UI 8.5. Data regarding the distribution start date also varies: Android Authority reports the end of September, while Sammy Fans mentions September 16 in Korea for the Galaxy S26.
According to Sammy Fans, this is the last major update
- One UI 9 is the final major update for the Galaxy S23 series, which was released in 2023.
- The update brings the October 2026 security patches, which address up to 83 vulnerabilities.
- For beta program participants, the size is less than 500 megabytes.
- The build number for the Galaxy S23 ends with GZIF.
- After One UI 9, the Galaxy S23 series will transition to quarterly security updates.
These details are reported exclusively by the Sammy Fans website.