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.

iphone apple watch ecg
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 Roundup: Apple Watch Series 9
Tag: ECG
Buyer's Guide: Apple Watch (Caution)

Popular Stories

Apple WWDC24 Apple Intelligence hero 240610

Apple Explains iPhone 15 Pro Requirement for Apple Intelligence

Wednesday June 19, 2024 4:48 am PDT by
With iOS 18, iPadOS 18, and macOS Sequoia, Apple is introducing a new personalized AI experience called Apple Intelligence that uses on-device, generative large-language models to enhance the user experience across iPhone, iPad, and Mac. These new AI features require Apple's latest iPhone 15 Pro and iPhone 15 Pro Max models to work, while only Macs and iPads with M1 or later chips will...
Apple Vision Pro 2 Feature 2

Apple Reportedly Suspends Work on Vision Pro 2

Tuesday June 18, 2024 8:17 am PDT by
Apple has suspended work on the second-generation Vision Pro headset to singularly focus on a cheaper model, The Information reports. Apple was widely believed to have plans to divide its Vision product line into two models, with one "Pro" model and one lower-cost standard model. The company is said to have been deprioritizing the next Vision Pro headset over the past year, gradually...
M4 Real Feature Red

M4 MacBook Pro Models Expected to Launch in Late 2024

Tuesday June 18, 2024 10:50 am PDT by
MacBook Pro models with an M4 chip are expected to launch in the fourth quarter of 2024, according to display analyst Ross Young. In a tweet for subscribers, Young said that panel shipments for new 14-inch and 16-inch MacBook Pro models are set to begin in the third quarter of 2024, which suggests a launch toward the end of the year. Apple started its M4 chip refresh in May with the launch...
iPhone 16 Pro Max Generic Feature 2

5 Biggest Changes Rumored for iPhone 16 Pro Max

Wednesday June 19, 2024 5:00 am PDT by
Given Apple's rumored plan to add an all-new high-end tier to its iPhone 17 series in 2025, this could be the year for Apple to bring its boldest "Pro Max" model to the table — the kind of iPhone 16 upgrade that stands tall above its siblings, both figuratively and literally. If you have been holding out for the iPhone 16 Pro Max, here are five of the biggest changes rumored to be coming...
Apple Intelligence General Feature

Apple Intelligence Features Not Coming to European Union at Launch Due to DMA

Friday June 21, 2024 9:44 am PDT by
Apple today said that European customers will not get access to the Apple Intelligence, iPhone Mirroring, and SharePlay Screen Sharing features that are coming to the iPhone, iPad, and Mac this September due to regulatory issues related to the Digital Markets Act. In a statement to Financial Times, Apple said that there will be a delay as it works to figure out how to make the new...
2022 back to school apple feature

Apple's 2024 Back to School Sale Launching This Week

Monday June 17, 2024 12:27 pm PDT by
Apple will launch its annual Back to School promotion for university students in the United States and Canada this week, according to Bloomberg's Mark Gurman. Apple's back to school sales provide students with a free Apple gift card when purchasing a Mac or an iPad, and this year's promotion could help Apple push the new M2 iPad Air and M4 iPad Pro models. Last year, Apple offered U.S....

Top Rated Comments

yaxomoxay Avatar
73 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)
L-Viz Avatar
73 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)
AngerDanger Avatar
73 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. :(



Attachment Image
Score: 19 Votes (Like | Disagree)
Kaibelf Avatar
73 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)
RedGala Avatar
73 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)
macduke Avatar
73 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)