Samsung Expands One UI 8.5 to Galaxy A, Z Fold 5, Z Flip 5; S25 Patch Delayed

Samsung is pushing One UI 8.5 out to five more phones today in South Korea, and the rollout tells you something about how the company thinks about its product line. The Galaxy A36, Galaxy A56, Galaxy Z Fold 5, Galaxy Z Flip 5, and Galaxy S23 FE are all getting the stable build starting now, with the rest of the world—including Canada—expected to see it arrive by May 23. It's a wide net, but not an even one.

The A36 update alone weighs about 2.5 gigabytes and arrives with firmware version A366NKSU6CZDA, carrying the May 2026 security patch and the full One UI 8.5 interface overhaul. That's the straightforward part. What matters more is what Samsung chose to give each tier of phone. The A36 and A56, sitting in the mid-range, get what Samsung calls Awesome Intelligence—a curated selection of AI tools built for their hardware capabilities. It's not the full Galaxy AI suite you'd find on a flagship. It's a deliberate segmentation: real AI improvements, but not every feature. The core interface changes—Ambient Design, the Quick Panel redesign, and Perplexity-powered Bixby—apply to everyone regardless of price point.

The foldables tell a different story. Samsung officially closed the One UI 8.5 beta program for the Z Fold 5 and Z Flip 5, which means the stable build is final and the development cycle for these two-year-old devices is done. That closure matters because it signals the company put these phones through a full testing cycle before shipping. For foldables specifically, where the display and hinge hardware demand careful validation before a major OS update, that thoroughness counts. What users get is substantial: Call Screening, Advanced Audio Eraser for third-party app playback, Creative Studio, and improved Photo Assist all move down from the S26 series to phones that are now two years old. For early adopters of foldables, it's a genuine value addition—features that were previously locked to newer hardware are now available on what they already own.

There's a wrinkle, though. The Galaxy S25 series, Samsung's current flagship lineup, still doesn't have the May 2026 security patch. A Samsung community moderator confirmed it's still in preparation. That's the frustration: older devices like the S23 FE and the A36 are already updated, but the newest flagships are waiting. The sequence has caught S25 owners off guard. Samsung said the patch is in progress, but no timeline emerged. It's an unusual inversion of the typical rollout order, and it's left the company's most recent premium buyers in a holding pattern.

If you own one of the phones getting the update today, the process is straightforward. Go to Settings, then Software Update, then Download and Install. The package is roughly 2.5 gigabytes, so Wi-Fi and a full battery are practical necessities. South Korea gets it first, as usual, with other regions typically following within 48 to 72 hours. For S25 owners, the wait continues—and the question of why the newest flagship is behind older models remains unanswered.