How to download ECG app on Apple Watch Series 4 and later
If you have an Apple Watch Series 4 or later and you are in a country that supports the ECG app, you still might not see the app installed on your Apple Watch. To download it, first you need to open the App Store. You can do this by pressing the Digital Crown on the side of your watch and then tapping the App Store icon. Once opened, you'll see a search bar at the top of the screen. Tap this and type in "ECG".
Scroll down through the list of results until you see the ECG app by Apple. From here, you should be able to tap "GET" and it will begin installing. If you don't see the ECG app in the list of results, you can send this link to yourself via iMessage and then open the Messages conversation with yourself on your Apple Watch. Tap the link and it should take you straight to the ECG app in the App Store.
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