Samsung’s Galaxy S23 family is one software generation away from retirement, while the Galaxy Watch 5 faces an even tighter horizon. Based on the timelines that follow from Samsung’s own published policy, the phone should receive One UI 9 on top of Android 17 as its final major platform upgrade, with security patches stretching into 2028. The smartwatch is nearer the exit: its system-update window is projected to close at the end of 2026. The essential caveat is that Samsung has never published a formal end-of-support date for either product.
- Last OS upgrade: One UI 9 on Android 17 would complete the four-generation commitment Samsung made for the S23.
- Security patches: If the five-year policy holds, S23 owners keep receiving fixes into early 2028, and monthly ones throughout 2027.
- Watch 5 deadline: Projections point to December 31, 2026 for final Wear OS updates, with security patches possibly running through 2027.
- Nothing official: Samsung lists patch frequency by model but publishes no per-device expiry date.
What Samsung actually promised
On February 10, 2022, Samsung committed to four generations of Android and One UI upgrades plus five years of security patches for the Galaxy S22 series and the “upcoming devices in the S series” — a pledge the S23 inherited.
The Galaxy S23, S23+ and S23 Ultra debuted on February 1, 2023, reaching European shelves on February 17 with Android 13 and One UI 5.1. Counting forward — Android 14, 15, 16 and 17 — the fourth generational leap lands on Android 17, which Samsung ships as One UI 9. Wearables follow a separate rulebook: the same 2022 announcement promised “up to four years” of One UI Watch and Wear OS upgrades for the Galaxy Watch4 line and the watches that followed it.
One UI 9 and the S23’s final chapter
The S23 is already current. One UI 8.5, built on Android 16 QPR2, began its stable rollout in South Korea in May 2026. One UI 9 has since started shipping, having launched on the S26 series in mid-September 2026 and reached the S25 and S24 families. The S23 is described by specialist Samsung trackers as next in the queue, with no official date attached.
The prevailing interpretation is that this will be the handset’s last major update, completing the four-generation commitment. Less clear is One UI 9.5. There is a precedent worth noting: the Galaxy S22 stopped at One UI 8 and never received 8.5, and tracker reporting suggests the S23 will follow the same path.
For the S23 FE, one claim circulates with limited reliability. Leaker Tarun Vats shared a screenshot presented as a conversation with Samsung support stating that One UI 9 will be its final major upgrade. It is not an official statement and has not been verified.
Security patches: monthly now, murky later
All four S23 models, FE included, sit in Samsung’s monthly patch tier on the company’s security bulletin page — an official cadence. That page groups devices by update frequency and warns the roster shifts as support periods lapse, without offering a per-model calendar. If the five-year promise holds, an S23 will keep receiving patches throughout 2027 and into early 2028. In practice, what expires first is new features, not protection.
The Galaxy Watch 5’s closing window
The Watch 5 and Watch 5 Pro went on sale on August 26, 2022, running Wear OS 3.5 and One UI Watch 4.5. Four years from launch points to the end of 2026, with projections placing the last Wear OS updates on December 31, 2026 and security patches potentially extending through 2027 — a projection rather than a confirmed date. Both watches currently sit in the quarterly patch group.
The most recent software is One UI 8 Watch, based on Wear OS 6, which reached the Watch 5 and Watch 5 Pro in the United States in December 2025. Whether One UI 9 Watch, built on Wear OS 7, ever arrives remains unresolved: the watch appears on “likely compatible” lists compiled by trackers, but Samsung has published no official eligibility list, and it could change.
The Galaxy Watch 4 offers the clearest clue about how these lifecycles end. It took its final update in early August 2026 — security fixes only — and was removed from Samsung’s bulletin page in September, leaving the Watch 5 as the oldest watch still supported. Newer hardware fares far better: the Galaxy Watch 9 and Galaxy Watch Ultra 2 are slated for five major upgrades and five years of patches, reaching 2031.
The real problem here is not support duration — four OS generations for a 2023 flagship is reasonable — but opacity. Samsung publishes a blanket policy while withholding per-model expiry dates, which hands the conversation to forums, tipsters and headlines that quietly turn a reasonable projection into a “confirmation”. A dated end-of-support notice on every product page would end the guesswork and give buyers the information they need to judge resale value. For S23 owners, there is no rush: One UI 9 is coming and patches should continue well past 2027. For Watch 5 owners, the device will keep working, but 2027 is likely the last year it makes sense as a second-hand purchase.