One UI 8 on the Galaxy Watch 4 Classic is turning a fan favorite into a frustrating mess

The Samsung Galaxy Watch 4 Classic showing the Samsung Health app on wrist

Credit: Jimmy Westenberg / Android Authority
TL;DR

  • Instead of improving performance, the One UI 8 Watch update is apparently breaking core Galaxy Watch 4 Classic features for some users.
  • Wrist detection stops working, which disables health features like ECG and body composition.
  • Reports suggest Samsung has paused the rollout, and a fix may be coming.

If you have a Galaxy Watch 4 Classic, you might want to wait before updating to One UI 8 Watch. What was supposed to be a fresh lease on life for Samsung’s 2021 fan-favorite smartwatch is causing problems for some users.

The One UI 8 Watch update, built on Wear OS 6, began rolling out to Galaxy Watch 4 models in early December. However, instead of making the watch better, users say the update is causing the sensors to stop working.

LATEST ARTICLE

See Our Latest

Blog Posts

admin June 24th, 2026

The foundation for an agentic control plane in life sciences includes four levels of capabilities working together: Infrastructure provides the […]

admin June 24th, 2026

How teams are building on Snowflake Postgres The Snowflake Online Feature Store is just one example. Companies across the globe […]

admin June 24th, 2026

Before the spark In early 2025, Snowflake’s marketing organization probably looked pretty similar to its peers in the tech space […]