How to take an ECG reading on the Samsung Galaxy smartwatches A step-by-step guide to taking ECG readings from your Samsung smartwatch Wareable is reader-powered. If you click through using links on the site, we may earn an affiliate commission. Learn more Monday March 8, 2021 @michaelsawh Owners of some Samsung smartwatches can now take accurate ECG readings from the wrist â after the feature was launched in more counties worldwide. While the sensors were in place on those watches when they first launched, Samsung has had to wait to get the necessary regulatory approval to turn it on for users. It's now live in Europe, as well as the US, South Korea and is rolling out across Japan, India and more countries. It's not available in all locations, we'll tell you which ones below.