Only U.S. residents will have access to the Apple Watch Series 4’s Electrocardiogram (ECG) feature when it launches. However, reports indicate that the restriction is software based and a simple tweak can unlock it for anyone.
All Apple Watch Series 4 devices come equipped with the ECG sensors regardless of which country you purchase it in. However, Apple received ‘de novo’ clearance from the FDA. This means when the feature is ready, Apple can turn it on for U.S. residents. While de novo isn’t the same as approval — and the FDA recommends those under 22 or those diagnosed with atrial fibrillation don’t use the feature — it still allows Apple to sell the watch.