https://us.community.samsung.com/t5/Galaxy-Watch/ECG-Not-Working/m-p/2001359/highlight/true
Solved: Re: ECG on GW3 - Samsung Community - 1460219
Sep 18, 2021 - If you go to the wearables app and select watch settings is it running the latest version? - 1460219
samsung communitysolvedecg
https://us.community.samsung.com/t5/Galaxy-Watch/ECG-Not-Working/m-p/2001354/highlight/true
Solved: ECG on GW3 - Samsung Community - 1460219
Sep 18, 2021 - Still can't record ECG on my Galaxy Watch 3. When I try, it counts down from 30 to 25, then stops. I know others have had the same issue. - 1460219
samsung communitysolvedecg