Changing the region to United States in your iPhone's settings won't automagically make Apple's new ECG app appear on Apple Watch Series 4 for non-US customers.
No, region-switching trick won’t make Apple’s ECG app magically appear for non-US users
ECG
The ECG app is not intended for use by people under 22 years old
Apple today released the watchOS 5.2.1 update which brought a brand-new ECG app for taking heart rate measurements that are not dissimilar from those recorded with a single-lead electrocardiogram, but you must be 22+ years old to use it.
How to take an ECG using your Apple Watch
In this tutorial, we will show you how to access the ECG app on your Apple Watch, enabling you to take an electrocardiogram whenever you need, and review past results in your iPhone Health app.
ECG app for Apple Watch Series 4 now available with watchOS 5.1.2
Apple today released the watchOS 5.1.2 software for all Apple Watch models, sans Series 0. As we indicated earlier, the update has brought a new on-demand ECG feature to Series 4 models.
Heart Analyzer updated with ECG support ahead of watchOS 5.1.2 launch
Heart Analyzer, an iPhone and Apple Watch app which gives you a better understanding of your heart rate rhythm, has pushed an extensive update on App Store with support for displaying electrocardiogram (ECG) information captured by Apple Watch Series 4.
45-day Apple Watch refund policy allegedly tied to heart health features, including the ECG app
Apple's usual 14-day refund policy for the Watch will extend to up to 45 days after purchase if a customer has a heart health-related refund request greater than 14 days.
ECG app for Apple Watch will reportedly launch with watchOS 5.1.2
Apple's ECG app that will permit Series 4 watch wearers to take an electrocardiograph reading on the go will release publicly as part of the watchOS 5.1.2 software update.
Apple Watch ECG feature could be enabled outside the US with a software trick
The Apple Watch Series 4’s most anticipated new feature, an electrocardiogram (ECG) app, is expected to launch in the United States first before officially rolling out elsewhere. It seems a simple software change could make the feature accessible, no matter your location, according to 9to5Mac.
Like iTunes and Apple Pay before it, the ability to use the ECG feature is expected to be based on the software region selected on the Apple Watch and iPhone. In other words, if you change these settings on your devices to the U.S. region, the ECG feature should work.
9to5Mac explains:
That the Apple Watch ECG limitation is software-based is already a good sign, since software limitations are inherently easier to bypass when compared to hardware ones. By being based on the region, users will be able to get access to the feature by changing the region on their iPhone and Apple Watch, similar to how other features such as Apple News can be enabled on unsupported countries.
The Apple Watch Series 4 includes electrodes built into the Digital Crown that work with the device’s back crystal to generate an ECG waveform. This information can help determine whether the user is showing signs of atrial fibrillation. To make this claim, Apple needs approval from national health agencies wherever it sells the wearable device such as the U.S.-based Food and Drug Administration (FDA). This process can take a long time, especially in places like Canada and the European Union.
9to5Mac notes Apple could make changes to how it determines location settings for the ECG app before it's released to the public. Therefore, there is no guarantee the software fix will actually work once the feature is launched. Time will tell.
Are you looking forward to using the ECG feature on your Apple Watch?
Approving Series 4’s ECG in UK could take years
It could take years for a new electrocardiogram feature (ECG), which made its debut in the recently-released Apple Watch Series 4, to be officially approved in the United Kingdom.
Apple is reportedly working on bringing support for Series 4’s exclusive ECG app to Europeans
Apple may support the upcoming ECG app for Apple Watch Series 4 in Europe.