Apple Releases watchOS 5.3 With Walkie-Talkie Bug Fix, ECG Support for Canada and Singapore

Apple today released watchOS 5.3, the seventh update to the watchOS 5 operating system that runs on modern Apple Watch models. watchOS 5.3 comes more than a month after the launch of watchOS 5.2.1, a minor update that expanded ECG availability.

watchOS 5.3 can be downloaded for free through the dedicated Apple Watch app on the iPhone by going to General -> Software Update. To install the new software, the Apple Watch needs to have at least 50 percent battery, it needs to be placed on a charger, and it needs to be in range of the ‌iPhone‌.

iphone apple watch ecg
No new features were discovered in watchOS 5.3 during the beta testing process, but according to Apple's iOS 12.4 release notes, the new update, along with iOS 12.4, fixes a major bug in the Walkie-Talkie app that could allow it to be used to spy on people and it once again makes the Walkie-Talkie app accessible.

The watchOS 5.3 update also brings ECG support and irregular heart rhythm notifications to Apple Watch Series 4 owners in both Canada and Singapore. The ECG feature's launch in Canada comes a few months after Apple confirmed that it was working to bring ECG functionality to the Apple Watch in Canada "as quickly as possible."

Health Canada initially approved the ECG app and irregular heart rhythm notifications on Apple Watch Series 4 in May. ECG capabilities are now available in more than 25 countries, following the feature's rollout to many European countries earlier this year. A list of countries where ECG functionality is available can be found on Apple's Apple Watch feature availability website.

Apple's full watchOS 5.3 release notes:

This update includes new features, improvements and bug fixes and is recommended for all users:
- Provides important security updates including a fix for the Walkie-Talkie app
- ECG app on Apple Watch Series 4 now available in Canada and Singapore
- Irregular heart rhythm notifications now available in Canada and Singapore

watchOS 5.3 may be one of the final updates to the watchOS 5 operating system as Apple shifts its focus to watchOS 6, which is currently being beta tested ahead of a planned fall release.

Related Roundup: Apple Watch Series 9
Tag: ECG
Buyer's Guide: Apple Watch (Caution)

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Top Rated Comments

realtuner Avatar
64 months ago
Finally ECG in Canada. :)
Score: 7 Votes (Like | Disagree)
GtrDude Avatar
64 months ago
Would like to see them work on the communications between the phone and watch instead of only adding new features.
"Mirror Phone" is anything but...
Score: 3 Votes (Like | Disagree)
deathnite Avatar
64 months ago
ECG app is now at version 1.18.

watchOS 5.1.2 ('https://www.macrumors.com/2018/12/06/watchos-5-1-2-released-with-ecg-app/'): ECG app v1.1 ('https://forums.macrumors.com/threads/apple-releases-watchos-5-1-2-with-ecg-new-infograph-complications-and-walkie-talkie-control-center-toggle.2159056/page-9#post-27230555') (initial US release)
watchOS 5.1.3 ('https://www.macrumors.com/2019/01/22/apple-releases-watchos-5-1-3/'): ECG app v1.2 ('https://forums.macrumors.com/threads/apple-releases-watchos-5-1-3-with-bug-fixes-and-performance-improvements.2166340/page-2#post-27023412')
watchOS 5.2.0 ('https://www.macrumors.com/2019/03/27/apple-releases-watchos-5-2/'): ECG app v1.10 ('https://forums.macrumors.com/threads/apple-releases-watchos-5-2-with-ecg-functionality-in-europe-and-hong-kong-airpods-2-support.2175299/page-4#post-27229174') (available in Europe and Hong Kong)
watchOS 5.2.1 ('https://www.macrumors.com/2019/05/13/apple-releases-watchos-5-2-1/'): ECG app v1.13 ('https://forums.macrumors.com/threads/apple-releases-watchos-5-2-1-with-ecg-functionality-for-additional-european-countries.2181139/#post-27359803') (additional ('https://en.wikipedia.org/wiki/WatchOS#watchOS_5.x') European countries)
watchOS 5.3.0 ('https://www.macrumors.com/2019/07/22/apple-watchos-5-3-ecg-canada/'): ECG app v1.18 (available in Canada and Singapore)
Score: 2 Votes (Like | Disagree)
GregJohn Avatar
64 months ago
Now just have to wait for them to add ecg in Watch OS 6 beta :P
Score: 2 Votes (Like | Disagree)
Eventer_ Avatar
64 months ago
Not showing up on iPhone running iOS 13 beta. Not sure if the beta is the reason, or it's just not showing up yet.
Same here

/edit

now found it
Score: 2 Votes (Like | Disagree)
Fynd Avatar
64 months ago
Same here
Likewise until I just spam refreshed it like the maniac I am and it showed up, so keep trying.
Score: 1 Votes (Like | Disagree)