To update! watchOS 5.1.2 is now available enabling ECGs — 2022

After yesterday's release of iOS 12.1.1, tvOS 12.1.1 and macOS 10.14.2 today Apple has decided to make available to users watchOS 5.1.2 is now available for download as long as you have a compatible Apple Watch . Among other novelties, this update enables the possibility of doing electrocardiograms or ECGs as long as we have an Apple Watch Series 4 and we are in the United States. We tell you all the details of this update in this article below.

ECGs are now active on Apple Watch with watchOS 5.1.2

One of the main features of the Apple Watch Series 4 is undoubtedly the incorporation of the necessary sensors to perform electrocardiogramas . The operation is really simple, since we simply have to put our finger on the digital crown where an electrode is located . This together with the electrodes that are in the base of the watch in contact with our skin will send electrical impulses that will complete the entire circuit of our body giving us an electrocardiogram that a priori is pretty reliable.

ECG Apple Watch Series 4

Obviously the quality of the ECG app passed rigorous tests to get the FCC permission. Among these studies, the clinical trial with 600 participants who had an EKG done with this Apple Watch and another one using traditional medical equipment. The similarities between one result and another showed that the ECG application of the Watch it has a sensitivity of 98.3% and a specificity of 99.6%.

This feature was disabled at the time of the release of the Apple Watch Series 4 but today Apple with watchOS 5.1.2 has activated this functionality as long as we are in the US, the only country where it has received authorization from the medical authorities.


In the rest of the countries, even if we have an Apple Watch with the necessary hardware to take an electrocardiogram, this possibility will not be activated with watchOS 5.1.2 since It is not approved by the government. But when it goes live in a few months, you'll be able tomake ECG with Apple Watch.

Apple Watch Series 4

These types of ads we can receive them passively , without entering any type of application since the watch is taking measurements of our heart rate every few minutes.

Along with these improvements in the field of Health, watchOS 5.1.2 has several improvements that we will detail below:

Us we obviously recommend installing this update as soon as possible , so you can take advantage of these new features and improvements in performance and security.