Samsung's One UI 9 marks the end of major software upgrades for several Galaxy devices released in 2023, including the Galaxy S23, S23+ and S23 Ultra, the Galaxy Z Fold 5 and Z Flip 5, and the A54, A34 and M54. The update, built on Android 17, began rolling out to the S23 series in South Korea on October 14, 2026, and reached Europe a few days later. The Z Fold 5 and Z Flip 5 received One UI 9 in the US on October 23.
A Samsung support representative reportedly confirmed in August that One UI 9 would be the S23 series' final major OS upgrade, according to SamMobile, in an exchange shared by tipster Tarun Vats. The representative's reply indicated that earlier plans for updates through Android 18 had changed, leaving Android 17 as the last version. The Galaxy S23 FE is also on the list of devices ending Android upgrades this year, though Samsung has not given it a One UI 9 release date and it was not included in the first S23 wave.
The schedule traces back to Samsung's early 2022 promise of up to four generations of One UI and Android upgrades and up to five years of security updates on selected Galaxy devices. The S23 launched a year later on Android 13, so Android 14, 15, 16 and 17 account for its four upgrades. The Galaxy Tab S9 series is on the same timeline. Security patches will continue for the affected phones into 2028, and the devices will keep working after the final OS upgrade.
One UI 9 brings the S23 a more customizable Quick Panel, improvements to Samsung DeX and Samsung Notes, new accessibility features and a location privacy indicator. Samsung has listed the S23 and S23 FE among phones supporting One UI 9's AI-powered Privacy Alerts. SamMobile's compatibility table shows that none of the four AI features added in One UI 9, My FanCam, Now Nudge, custom Now Brief cards and Call Brief, run on the S23 series or the S23 FE; Samsung's Korean changelog for the S23 Ultra lists only scrollback for live Interpreter conversations in its Galaxy AI section.
Samsung removes devices from its monthly update list as their support periods expire, and some carriers deliver updates only quarterly even when Samsung issues monthly patches, so owners of carrier-locked models should expect less frequent patches over the next year. Patch deadlines matter more for banking apps and work email than for missing features. The article also notes that after Samsung began rolling out One UI 8.5 in May, some S23 owners reported permanent green or pink lines on their displays.
Samsung changed its policy after the S23 went on sale. At the S24's launch in early 2024, it promised seven generations of OS upgrades and seven years of security updates, but decided not to apply that retroactively to phones already on the market. Samsung brought One UI 9 to the Galaxy S26 in September, and that device will be supported until 2033.
More gadget news from TechManNews.
