One UI 8 Update Brings Trouble for Galaxy Watch 4 Classic Users
Samsung’s One UI 8 update, intended to refresh the Galaxy Watch 4 Classic, has unfortunately led to several problems for some users. Rather than enhancing performance, the new software appears to be breaking essential features on the popular 2021 smartwatch. Reports from the Samsung Community forum and Reddit reveal that the update is causing wrist detection failures, battery drain, and issues with watch faces and the Always On Display.
Key Features Impacted by the Update
One of the most critical issues is the failure of wrist detection, which disables important health functionalities such as ECG monitoring and body composition analysis. Users have found that the watch no longer recognises when it is being worn, which also affects security features. For instance, the device repeatedly locks itself because it mistakenly believes it has been removed from the wrist. Interestingly, some users discovered that wearing the watch with the face on the inside of the wrist can sometimes trick the sensors into working, but this is far from an ideal solution.
Other reported problems include a significant battery drain and Samsung’s proprietary watch faces failing to load properly. The Always On Display feature, which is crucial for quick glanceability, also reportedly stops functioning after the update. Attempts to fix these issues by clearing the cache have not yielded positive results.

Background and Samsung’s Response
The Galaxy Watch 4 Classic remains a fan favourite, largely due to its physical rotating bezel and solid feature set. Samsung’s One UI 8 update was designed to extend the usability of this smartwatch for another year, but as is often the case with older hardware, new software can introduce compatibility challenges. Maintaining support for devices that are several years old is particularly challenging in the wearable space, where sensors and hardware capabilities evolve rapidly.
Given the volume of complaints, it appears Samsung has paused the rollout of the One UI 8 update for the Galaxy Watch 4 Classic in some regions. This pause suggests that the company is likely working on a fix to address the sensor and battery issues. Samsung has yet to provide an official statement, but the community feedback has clearly highlighted the severity of the problems.
What to Expect Next
If you own a Galaxy Watch 4 Classic, it is advisable to hold off on updating to One UI 8 until Samsung releases a patch. The current issues significantly impact the watch’s core health and usability features, undermining the overall experience. As Samsung investigates these problems, users should keep an eye on official channels for updates and fixes. This situation underscores the complexities involved in updating older wearable devices with new software versions.
We will continue to monitor developments and update when more information becomes available.
