watchOS 5.1.2 Will Enable ECG App on Apple Watch Series 4

ECG functionality will be enabled on the Apple Watch Series 4 in the publicly released version of watchOS 5.1.2, which is currently in beta testing, according to an internal Apple Store training document obtained by MacRumors.


watchOS 5.1.2 will feature an Apple-designed ECG app that can indicate whether your heart rhythm shows signs of atrial fibrillation, a serious form of irregular heart rhythm, or a normal sinus rhythm. Apple Watch Series 4 is capable of generating an ECG similar to a single-lead electrocardiogram, according to the FDA.

ECG and other heart data is collected in the Health app on a paired iPhone. Apple's document lists a minimum requirement of an iPhone 5s or later running iOS 12.1.1, currently in beta testing, or later.

To take an ECG reading from the Apple Watch, users will need to place a finger on the Digital Crown while wearing the watch. The reading is completed in 30 seconds, allowing users to determine whether their hearts are beating in a regular pattern or if there are signs of atrial fibrillation.

Apple's training document states that the ECG app is regulated and only available in regions cleared for use. The app will initially be limited to the United States, where Apple has received FDA clearance, but Apple Watch Series 4 models sold worldwide include the electrical heart sensor for future expansion.

Apple Store employees are instructed to advise customers that the ECG app is "not intended to be a diagnostic device or to replace traditional methods of diagnosis," and "should not be used to monitor or track disease state or change medication without first talking to a doctor," according to Apple's document.

Apple promised that the ECG app will be available later this year, but it's unclear when watchOS 5.1.2 and iOS 12.1.1 will be released. watchOS 5.1.2 has been in beta testing since November 7, while iOS 12.1.1 has been in beta testing since October 31, so both software updates should be released relatively soon.

A separate Apple training document obtained by MacRumors suggests that irregular heart rhythm notifications will also be enabled in watchOS 5.1.2 on Apple Watch Series 1 through Apple Watch Series 4 models.

The ECG app will not be available on previous-generation Apple Watch models, including the original through Series 3.

Related Roundups: Apple Watch, watchOS 6, watchOS 7
Tag: ECG
Buyer's Guide: Apple Watch (Caution)

Top Rated Comments

(View all)
Avatar
21 months ago

I am pissed that this will not work with my Series 3!! I could really use this app. Apple has a way to make me spend money. I might be stubborn and not buy a Series 4 until refurbs come along.

Why would you be pissed? It wasn't a function when you purchased it, and it wasn't promised by apple...
Score: 49 Votes (Like | Disagree)
Avatar
21 months ago

Am I the only one scared that my Watch will tell me I'm going to die?

You are in fact going to die.
Score: 37 Votes (Like | Disagree)
Avatar
21 months ago
Can’t wait to see which of my hearts the ECG measures.

EDIT: None of them are showing up. Not even the ****** lower-left-quadrant one. :(



Score: 19 Votes (Like | Disagree)
Avatar
21 months ago

Good idea. Health is a huge market and Apple is well positioned to control the wrist real estate. But, to succeed they need to make the Watch fully function with non-Apple phones and tablets.

No they don't. This is very sensitive health data, and it's not Apple's job to facilitate building a doorway for a bunch of hackneyed Android devs to screw it up and cause problems. Then Apple will be blamed for Google's failure to properly secure their platform. That's to say NOTHING of insurers, who would love to "better serve you" by accessing that and deciding how quickly they want to lobby you off their roster.
Score: 15 Votes (Like | Disagree)
Avatar
21 months ago

No they don't. This is very sensitive health data, and it's not Apple's job to facilitate building a doorway for a bunch of hackneyed Android devs to screw it up and cause problems. Then Apple will be blamed for Google's failure to properly secure their platform. That's to say NOTHING of insurers, who would love to "better serve you" by accessing that and deciding how quickly they want to lobby you off their roster.

I completely agree. I don't want google's dirty fingers anywhere near the health app.
Score: 13 Votes (Like | Disagree)
Avatar
21 months ago

I am pissed that this will not work with my Series 3!! I could really use this app. Apple has a way to make me spend money. I might be stubborn and not buy a Series 4 until refurbs come along.

This comment reflects poorly on you. Even I'm embarrassed. Did you also wonder why your 6s Plus never grew a second camera? Or why your iMac didn't form a cocoon and emerge as an iMac Pro? Honestly, what do you people want Apple to do—never innovate, or give you a free device upgrade every year? The entitlement never ceases to amaze me.
Score: 11 Votes (Like | Disagree)

Top Stories

iPhone Users Who Experienced 'Batterygate' Can Now File to Receive Around $25 Settlement From Apple

Monday July 13, 2020 6:50 am PDT by
Earlier this year, Apple agreed to settle a U.S. class action lawsuit that accused the company of "secretly throttling" older iPhone models. Now, eligible iPhone owners are beginning to be notified about their legal rights and options. Under the proposed settlement, Apple will provide a cash payment of approximately $25 to each eligible iPhone owner who submits a claim, with its total payout ...

Apple Releases iOS 13.6 With Car Key, Toggle to Turn Off Automatic Update Downloads, Audio Apple News+ Stories and More

Wednesday July 15, 2020 10:04 am PDT by
Apple today released iOS and iPadOS 13.6, major updates that come more than a month after the launch of iOS and iPadOS 13.5.1. iOS and iPadOS 13.6 introduce new Health, Apple News, and software update features. The iOS and iPadOS 13.6 updates are available on all eligible devices over-the-air in the Settings app. To access the updates, go to Settings > General > Software Update. Apple has...

Possible 'iPhone 12' Battery Certifications Suggest Lower Capacities Than iPhone 11 Series

Monday July 13, 2020 4:22 am PDT by
MySmartPrice has spotted certifications for three new Apple batteries that it believes could be for the upcoming iPhone 12 lineup, despite them being less capacitive than the batteries in the current iPhone 11 series. The batteries are identified with the model numbers A2471, A2431, and A2466, and appear on Safety Korea, China's 3C, and the Danish agency UL Demko. Apple is expected to...

iPhone 12 Could Ship With New Braided USB-C to Lightning Cable

Tuesday July 14, 2020 10:57 am PDT by
Apple's upcoming iPhone 12 models could ship with a new Lightning to USB-C cable that includes a braided fabric design, according to leaked photos from ChargerLAB that surfaced on Weibo today (via Twitter users DuanRui and L0vetodream). The photos depict a USB-C to Lightning cable that has a braided design rather than the standard non-fabric design of the current cables. Apple has never...

Apple Pays Samsung an Estimated $950 Million for Missing OLED Panel Purchase Targets

Monday July 13, 2020 10:03 am PDT by
Apple in the second quarter of 2020 paid Samsung approximately $950 million for not meeting OLED panel purchase goals established in agreements between the two companies, according to display analysts at Display Supply Chain Consultants. Samsung last week shared guidance on revenue and operating profit for the second quarter of 2020, which included a one-time gain related to its display...

Five Mac Apps Worth Checking Out - July 2020

Tuesday July 14, 2020 2:34 pm PDT by
Apps created for Macs don't typically receive as much coverage as apps designed for iPhones and iPads, so we crated a series here at MacRumors to highlight interesting Mac apps worth checking out. This month's apps focus on productivity and feature great tools for working from home. Subscribe to the MacRumors YouTube channel for more videos. Twobird (Free) - Twobird is an email app from...

Apple Warns Against Closing MacBooks With a Cover Over the Camera

Friday July 10, 2020 11:12 am PDT by
Apple this month published a support document that warns customers against closing their Mac notebooks with a cover over the camera as it can lead to display damage. Image via Reddit Apple says that the clearance between the display and the keyboard is designed to very tight tolerances, which can be problematic. Covering the camera can also cause issues with automatic brightness and True Tone....

Apple Shares Humorous 'Working-From-Home Thing' Video

Monday July 13, 2020 9:31 am PDT by
Apple today shared a funny video focused on the problems that people working from home have to deal with, including noisy children, chaotic schedules, communication issues, and more. The video focuses on showing off Apple products and their capabilities that can be useful when working from home, such as the ability to scan a document with an iPhone, mark up a PDF, Siri Reminders, and more.The...

SoftBank Considering Possible Sale of Arm Holdings as Apple Gears Up for Arm-Based Macs

Monday July 13, 2020 2:00 pm PDT by
SoftBank, the company that owns chip designer Arm Holdings, is exploring options that include a full or partial sale or a public offering, reports The Wall Street Journal. SoftBank is working with Goldman Sachs Group as an advisor, and the explorations are at an early stage. The Wall Street Journal says that it's unknown how much interest there would be in Arm from financial or industry...

Rumor Suggests New Apple App for Windows Could Be Coming Soon

Tuesday July 14, 2020 1:54 am PDT by
Apple could be working towards the release of a new app for Windows 10, according to a report this week from an Italian website. The blog Aggiornamenti Lumia suggests that an app from Apple is "coming soon" to the Microsoft Store, but stops short of providing additional details. Apple still maintains a Windows version of the iTunes app, which has been discontinued on Mac and replaced by...