Samsung has officially ended software support for the Galaxy Watch 4 and Galaxy Watch 4 Classic, removing them from its Security Updates page. The devices have reached the end of their five-year software support cycle and will no longer receive quarterly security patches. The final update rolled out in August, containing only essential security fixes.

Launched with Wear OS 3 co-developed by Samsung and Google, the Watch 4 series marked a shift from Samsung's in-house Tizen OS. However, the UI closely mirrored Tizen and lacked several standard Wear OS features found on competitors like the TicWatch.

As of September 2024, the oldest supported models are the Galaxy Watch 5 series and Galaxy Watch 5 Pro. Samsung's latest Galaxy Watch 9 series now utilizes Qualcomm's Snapdragon Wear Elite chipset and expanded health tracking capabilities.