Samsung One UI 8.5 rollout: which Galaxy devices get it first

Samsung’s One UI 8.5 rollout has two “firsts.” The Galaxy S26 series was the first to run the stable software because it shipped with One UI 8.5 pre-installed ^[13]. For existing Galaxy devices, Samsung’s official rollout began in Korea on May 6, 2026, and reporting on the rollout identifies the Galaxy S25 series as first in line ^[29][4].

Rollout at a glance

Rollout stage	Devices	Timing
First devices overall	Galaxy S26 series	Shipped with stable One UI 8.5 out of the box [13].
First update recipients	Galaxy S25 series	Rollout began in Korea on May 6, 2026 [4].
Wider regional expansion	More eligible Galaxy phones and tablets	Samsung says additional regions follow after Korea; SamMobile reports the broader rollout begins May 11 in Europe, Hong Kong, India, Latin America, North America, Southeast Asia, and Taiwan [29][1].

Devices Samsung named in the first rollout wave

Samsung’s global newsroom says One UI 8.5 is expanding to Galaxy mobile phones and tablets, including these models ^[29]:

• Galaxy S25 series
• Galaxy S25 FE
• Galaxy S24 series
• Galaxy S24 FE
• Galaxy Z Fold7 and Galaxy Z Flip7
• Galaxy Z Fold6 and Galaxy Z Flip6
• Galaxy Tab S11 series
• Galaxy Tab S10 series

That list is the strongest confirmed starting point. Samsung’s wording does not provide a complete calendar for every Galaxy phone or tablet; it names an initial set and says availability expands by region after Korea ^[29].

When other Galaxy devices should expect it

If your Galaxy is in Samsung’s named list, Samsung has publicly associated it with the official One UI 8.5 expansion. That still does not guarantee the same-day update everywhere: Korea started first on May 6, 2026 ^[29]. A wider rollout is reported to begin May 11 across major regions, but exact arrival can still vary by market and model ^[1][33].

For devices outside Samsung’s named list, the provided sources do not confirm an exact date. Treat older “expected” calendars cautiously where they predate Samsung’s May 6 announcement. The safest rule is to wait for a local Samsung notice or for the update to appear on your device.

Why your phone may not see the update immediately

A staged rollout is normal for major Galaxy software releases. Samsung’s announcement says Korea starts first and other regions follow ^[29]. Third-party reporting also notes that availability and feature support can vary by market, model, and region ^[33][40].

To check manually, open Settings → Software update → Download and install. If nothing appears, it does not necessarily mean your device is ineligible; it may simply mean your market or model variant has not received the rollout yet.

Bottom line

The Galaxy S26 series got One UI 8.5 first by shipping with it. Among existing Galaxy devices, the Galaxy S25 series leads the update rollout, starting in Korea on May 6, 2026 ^[13][4]. The first official expansion wave covers recent Galaxy S, Galaxy Z, and Galaxy Tab S models, with broader regional availability reported from May 11 and no complete model-by-model schedule for every Galaxy device yet ^[29][1].