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Samsung Begins One UI 8.5 Testing for Galaxy M55s

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aryan

January 31, 2026 2 min read
Samsung Begins One UI 8.5 Testing for Galaxy M55s
The 30-Second Summary

Samsung is testing One UI 8.5 for the Galaxy M55s, as indicated by firmware spotted on company servers, moving the mid-range phone closer to receiving the Android 16-based update with improved UI and new features.

Samsung Begins One UI 8.5 Testing for Galaxy M55s

Samsung has expanded its One UI 8.5 testing program to include the Galaxy M55s, signaling that the mid-range smartphone is progressing toward receiving the Android 16-based software update. Firmware for the device has been detected on Samsung's servers, indicating internal testing is underway.

Testing Phase Underway

The Galaxy M55s has been spotted with firmware version M558BXXU2DZA7 on Samsung's servers, which corresponds to One UI 8.5. This discovery confirms that Samsung has initiated testing for the device, bringing it one step closer to public release. The testing follows Samsung's broader rollout strategy for One UI 8.5, which began with the Galaxy S25 series and will eventually reach eligible devices across multiple product lines.

One UI 8.5 Features and Improvements

One UI 8.5 represents a significant update over previous versions, offering a more sophisticated user interface with enhanced ease of use and greater customization options. The software builds upon Android 16 QPR2 and introduces numerous new features designed to improve user convenience and functionality. While specific feature details for the Galaxy M55s implementation haven't been disclosed, the update typically brings refinements to system performance, interface elements, and additional customization capabilities.

Rollout Timeline and Expectations

Samsung's testing process for the Galaxy M55s follows the company's established software deployment pattern. One UI 8.5 is expected to debut officially with the Galaxy S26 series before rolling out to other eligible devices. The Galaxy M55s testing indicates Samsung is preparing the software for mid-range devices, though an exact release date remains unspecified. Users should expect the update to arrive after successful completion of testing and following the initial launch on flagship devices.

Conclusion

The detection of One UI 8.5 firmware for the Galaxy M55s confirms Samsung's commitment to bringing its latest software to mid-range devices. While testing is still in early stages, this development suggests Galaxy M55s owners can anticipate receiving the Android 16-based update in the coming months, complete with enhanced interface design and new functionality. As testing progresses, more details about specific features and rollout timing for the device should become available.

Frequently Asked Questions

Quick answers to common questions

What does the firmware discovery mean for Galaxy M55s users?

The discovery of One UI 8.5 firmware for the Galaxy M55s indicates Samsung has begun internal testing, meaning the device is officially in line to receive the update once testing is complete and the broader rollout begins.

When will Galaxy M55s users receive One UI 8.5?

While no specific date has been announced, the update typically follows Samsung's established rollout pattern: after official debut on flagship devices (like the Galaxy S26 series) and successful completion of testing on each specific model.

Samsung Begins One UI 8.5 Testing for Galaxy M55s | MobDeck Blog