Apple is today launching the ECG app in two additional countries. With the release of watchOS 5.3, the ECG app and irregular heart rate notifications to Canada and Singapore.
The electrocardiagram sensor hardware is included in all Apple Watch Series 4 units, but is disabled through software in countries where it has not got approval. Apple Watch Series 4 owners in Canada and Singapore can now update to watchOS 5.3 to use the ECG app.
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