Samsung Rolls Out One UI 8 to Fold4, Flip4, M36, F36

Samsung has started rolling out stable One UI 8 (Android 16) to the Galaxy Z Fold4, Z Flip4, M36, and F36. Learn firmware codes, download sizes, security patch months, regions, and how to check for the update.

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Samsung Rolls Out One UI 8 to Fold4, Flip4, M36, F36

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Samsung has expanded its Android 16-based One UI 8 stable rollout to four more phones: the Galaxy Z Fold4, Galaxy Z Flip4, Galaxy M36, and Galaxy F36. The updates bring the latest security patches and firmware builds to users across multiple regions.

Which phones are getting the update and what’s inside?

Here’s a quick breakdown of the newly seeded stable builds, their firmware codes, download sizes and included security patches.

  • Galaxy Z Fold4 — Firmware: F936BXXUAIYIF. Update size: over 3GB. Includes the October 2025 Android security patch. Rolling out across Asia, Africa and Europe.
  • Galaxy Z Flip4 — Firmware: F721BXXUAIYIF. Update size: over 3GB. Includes the October 2025 Android security patch. Rolling out across Asia, Africa and Europe.
  • Galaxy M36 — Firmware: M366BXXUZBYI3. Update size: about 2.3GB. Includes the September 2025 Android security patch. Rolling out in India.
  • Galaxy F36 — Firmware: E366BXXU2BYI4. Update size: about 2.3GB. Includes the September 2025 Android security patch. Rolling out in India.

Where and when will you see it?

The Fold4 and Flip4 builds are already moving through regions in Asia, Africa and Europe. The M36 and F36 updates have been confirmed for India. As with most staged rollouts, availability can vary by carrier and market, so not every device will receive the update at the same moment.

How to get One UI 8 on your phone now

If you haven’t been prompted to update yet, you can force a manual check: open Settings > Software update > Download and install. Make sure you’re on a stable Wi-Fi connection, have at least 50% battery or are charging, and consider backing up important data before installing a major system update.

Curious whether this brings new features? One UI 8 is Android 16-based and typically focuses on UI refinements, performance tweaks and improved privacy and security — but exact feature availability can depend on the model.

Keep an eye on Samsung’s official update notes and your carrier’s announcements for full changelogs and any region-specific details.

Source: gsmarena

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