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Credit: Jimmy Westenberg / Android Authority

TL;DR

• Samsung has removed the Galaxy Watch 4 and Watch 4 Classic from its Mobile Security work scope schedule, marking the end of official software and security updates.
• The August 2026 security patch and One UI 8 Watch update complete Samsung’s promise of four generations of Wear OS upgrades to these watches from 2021.
• While the smartwatches will continue to function, they will no longer receive new OS features or security patches for newly discovered vulnerabilities.

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It’s officially the end of the road for the Galaxy Watch 4 and Watch 4 Classic. After four generational platform upgrades culminating in the rollout of One UI 8 Watch, Samsung has now stopped security updates for these smartwatches, marking the end of an era for the wearable lineup that practically revived Google’s smartwatch ecosystem.

As spotted by SamMobile, Samsung updated its Mobile Security work scope schedule following the release of its September 2026 security bulletin. Both the vanilla Galaxy Watch 4 and the physical-bezel Galaxy Watch 4 Classic have now been removed from the list of supported devices. This means the August 2026 security patch, which rolled out last month, serves as the final curtain call for both models.