Samsung is gearing up to roll out its highly anticipated One UI 8 update based on Android 16, bringing fresh features and improved performance across its Galaxy ecosystem. While the company has not made an official announcement yet, a newly leaked roadmap reveals the expected rollout timeline for flagship smartphones, foldables, Galaxy A and M series, tablets, and even smartwatches.

According to the leak, the Samsung Galaxy S25 series will be the first to receive the update starting September 18, followed by a phased rollout to other devices in the coming weeks.

Key Points

One UI 8 based on Android 16 leaked rollout schedule

Galaxy S25, S25+, and S25 Ultra tipped to get update on September 18

Galaxy S24 series, older Galaxy S models, and FE editions to follow in late September and October

Z Fold and Z Flip models lined up for October updates

Galaxy A, M, XCover, and rugged devices to receive updates in phases through October and November

Tablets and Galaxy Watches also included in the leaked roadmap

Rollout limited to select regions, with Asia among the first

Samsung Galaxy S Series Update Timeline

The leak suggests that Samsung will begin with its Galaxy S25 lineup:

September 18, 2025 → Galaxy S25, Galaxy S25+, Galaxy S25 Ultra

September 25, 2025 → Galaxy S25 Edge, Galaxy S24 Ultra, Galaxy S24+, Galaxy S24, Galaxy S24 FE

October 2, 2025 → Galaxy S23 Ultra, Galaxy S23+, Galaxy S23, Galaxy S23 FE, Galaxy S21 FE 5G

October 6, 2025 → Galaxy S22, Galaxy S22+, Galaxy S22 Ultra

Samsung Galaxy Z Series Update Timeline

Foldables are also on the priority list:

October 2, 2025 → Galaxy Z Fold 6, Galaxy Z Flip 6

October 6, 2025 → Galaxy Z Fold 4, Galaxy Z Flip 4

October 13, 2025 → Galaxy Z Fold 5, Galaxy Z Flip 5

Samsung Galaxy A Series Update Timeline

The Galaxy A-series, one of Samsung’s most popular mid-range lineups, will see a staggered rollout:

September 25, 2025 → Galaxy A56 5G, Galaxy A36 5G

October 2, 2025 → Galaxy A26 5G, Galaxy A17 5G, Galaxy A16 5G

October 6, 2025 → Galaxy A55 5G

October 13, 2025 → Galaxy A54 5G, Galaxy A52s 5G

October 16, 2025 → Galaxy A25 5G, Galaxy A23 5G

October 20, 2025 → Galaxy A15 5G

October 23, 2025 → Galaxy A06

October 30, 2025 → Galaxy A53 5G, Galaxy A35 5G, Galaxy A34 5G, Galaxy A33 5G

Samsung Galaxy M Series Update Timeline

Samsung’s budget-friendly M-series will also join the update cycle:

October 20, 2025 → Galaxy M34 5G

October 27, 2025 → Galaxy M33 5G, Galaxy M15 5G

Samsung Galaxy XCover Series Update Timeline

For rugged smartphone users:

October 23, 2025 → Galaxy XCover 7, Galaxy XCover 6 Pro

November 10, 2025 → Galaxy XCover 7 Pro

Samsung Galaxy Tab Update Timeline

The update will also extend to Samsung tablets:

October 1, 2025 → Galaxy Tab S10 Ultra, S10 Ultra 5G, Tab S10+, Tab S10+ 5G

October 9, 2025 → Galaxy Tab S10 FE lineup, Galaxy Tab S8 Lite

October 13, 2025 → Galaxy Tab S9 FE, Galaxy Tab S9 FE+

October 16, 2025 → Galaxy Tab Active 5, Active 5 5G

October 23, 2025 → Galaxy Tab S9 Ultra, S9, S9+, Tab S8 Ultra, S8+, S8, Tab S6 Lite

November 5, 2025 → Galaxy Tab A9

November 7, 2025 → Galaxy Tab Active 5 Pro 5G

Samsung Galaxy Watch Update Timeline

Smartwatches will not be left behind:

October 1, 2025 → Galaxy Watch 7, Watch FE, Watch 6, Watch 6 Classic

November 3, 2025 → Galaxy Watch 5, Watch 5 Pro, Watch 4, Watch 4 Classic

Limited Regional Rollout

The leak clarifies that this rollout plan may only apply to select regions such as Asia, and availability could differ across markets. Some models not listed in the roadmap may still receive the update at a later stage.

Conclusion

Samsung is preparing for one of its largest software rollouts yet with One UI 8 based on Android 16, bringing new features, design refinements, and improved system stability. Starting with the Galaxy S25 series on September 18, the update will gradually make its way to other flagships, foldables, mid-range models, tablets, rugged devices, and Galaxy Watches by November 2025.

While this leaked schedule gives us a detailed preview, users should wait for Samsung’s official confirmation for their specific region and device.

Follow Before You Take on:

Stay informed, Stay Connected!

The post Samsung One UI 8 Rollout Leaked: Android 16 Update Starts Sept 18 for Galaxy S25, More Devices to Follow appeared first on Before You Take.