One UI 9 Is The Final Major Update For These Older Samsung Galaxy Phones
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Samsung has begun rolling out One UI 9, its Android 17-based software, to the Galaxy S23, S23+, S23 Ultra, Z Fold 5 and Z Flip 5, with the S23 line landing in South Korea on October 14, 2026 and the foldables reaching the US on October 23. A Samsung support representative confirmed the update is the final major OS upgrade for these 2023 devices, including the S23 FE, despite earlier plans to extend support to Android 18. Security patches will continue into 2028, so the phones remain usable even without further platform upgrades. The cutoff matters because it shortens the useful flagship lifespan for buyers who paid premium prices and narrows the software gap with newer Galaxy models. Watch next for Samsung's patch cadence on these devices and whether the shortened support cycle influences upgrade timing among owners.
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Named in this story
Samsung, Galaxy S23, One UI 9, Galaxy Z Fold 5, Galaxy Z Flip 5