Samsung Electronics has officially confirmed the One UI 9 release date for its previous-generation flagship smartphones, including the Samsung Galaxy S25 lineup and its 2025 foldable devices.
Following the initial launch of the stable Android 17 update-based software on newer models, the South Korean technology firm announced that the update will begin rolling out to the Galaxy S25 series, Galaxy Z Fold 7, and Galaxy Z Flip 7 starting September 28, 2026.
The schedule first surfaced through an official advisory published by Samsung Thailand’s regional newsroom, providing a concrete timeline for millions of users who are currently participating in or waiting for the conclusion of the public beta program.
Global Rollout Follows Initial Korean Launch
The announcement marks the second major phase of Samsung's broader Android 17 update strategy. The stable version of One UI 9 originally debuted on the newly released Galaxy Z Fold 8 and Galaxy Z Flip 8 series earlier this summer. This was followed by a public deployment to the current flagship Galaxy S26, S26 Plus, and S26 Ultra in South Korea on September 16, 2026.
According to official company communications, the expansion to broader international markets is already moving forward. Samsung Canada confirmed that its local deployment for the Galaxy S26 series will begin on September 21, 2026.
Once the current generation of hardware is fully updated, Samsung will immediately pivot to last year's premium devices. The targeted September 28 launch date indicates that the company is substantially condensing its Samsung software rollout testing cycles compared to previous years, moving from beta to stable builds in less than a month for older flagships.
What We Know About the Eligible Devices
The September 28 phase explicitly covers the premium tiers of Samsung’s 2025 product line. The confirmed devices scheduled to receive the over-the-air notification include:
- Galaxy S25, S25+, and S25 Ultra
- Galaxy Z Fold 7
- Galaxy Z Flip 7
While the regional roadmap detailed these specific models, some ambiguity remains regarding mid-tier variations. The Galaxy S25 FE (Fan Edition) is currently included in active One UI 9 beta testing pools alongside the mainline flagships. However, the official stable release text explicitly omitted the FE branding for the September 28 window, leaving it unclear if the budget flagship will receive the package simultaneously or face a short delay.
Timeline for Older Generations and Mid-Range Phones
For individuals operating older hardware, the roadmap outlines a cascading schedule extending into the final quarter of the year.
Samsung’s documentation revealed that the Galaxy S23 FE is positioned to receive its stable build in October 2026. Industry analysts note that this specific placement is highly unusual, as the standard Galaxy S24 and Galaxy S23 flagship series were not explicitly named in the same regional announcement.
Historically, mainline flagships receive priority over Fan Edition offshoots. It is widely expected across the mobile industry that the standard Galaxy S24 and Galaxy S23 series will join the rollout within the same October timeframe, aligning with the company's established software lifecycle policies.
Notably, this upcoming cycle will represent the final major operating system upgrade for the Galaxy S23 FE and the broader Galaxy S23 generation, as those devices reach the conclusion of their promised four-year OS update guarantee.
Regional Discrepancies and Next Steps
As with all major mobile operating system updates, carrier verification and geographic restrictions will influence the exact time local handsets receive the notification. While the September 28 target acts as the definitive starting point for the Galaxy S25 generation, actual availability will vary between unlocked models and carrier-subsidized units across the United States, United Kingdom, Europe, and Australia.
Users can manually monitor the progress of the software distribution on their devices by navigating to Settings, selecting Software Update, and tapping Download and Install once the deployment phase opens in their respective territories.
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