Apple Releases watchOS 6.1.3 Update With Heart Rhythm Notification Bug Fix

Apple today released watchOS 6.1.3, the fifth update to the watchOS 6 operating system designed to run on modern Apple Watch models. watchOS 6.1.3 comes three weeks after the release ofwatchOS 6.1.2.

watchOS 6.1.3 can be downloaded for free through the dedicated Apple Watch app on theiPhone by going to General > Software Update.

watchos6ewatchfaces
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.

The watchOS 6.1.3 update includes important bug fixes, addressing an issue that could prevent the irregular heart rhythm notification feature from working properly for Apple Watch owners in Iceland.

Apple has also released watchOS 5.3.5 for Apple Watch models not able to run watchOS 6 due to the use of an older ‌iPhone‌.

Related Roundup:Apple Watch 10
Buyer's Guide:Apple Watch (Caution)

Popular Stories

iPhone 17 Pro in Hand Feature Lowgo

iPhone 17 Pro Coming Soon With These 14 New Features

Friday July 4, 2025 1:05 pm PDT by
Apple's next-generation iPhone 17 Pro and iPhone 17 Pro Max are just over two months away, and there are plenty of rumors about the devices.Below, we recap key changes rumored for the iPhone 17 Pro models.Latest RumorsThese rumors surfaced in June and July:Apple logo repositioned: Apple's logo may have a lower position on the back of the iPhone 17 Pro models, compared to previous...
iphone 16 pro models 1

Here's How the iPhone 17 Pro Max Will Compare to the iPhone 17 Pro

Saturday July 5, 2025 1:00 pm PDT by
Apple should unveil the iPhone 17 series in September, and there might be one bigger difference between the Pro and Pro Max models this year. As always, the Pro Max model will be larger than the Pro model:iPhone 17 Pro: 6.3-inch displayiPhone 17 Pro Max: 6.9-inch displayGiven the Pro Max is physically larger than the Pro, it has more internal space, allowing for a larger battery and...
airpods pro 2

AirPods Pro 3 to Help Maintain Apple's Place in Earbud Market Amid Increasing Low-Cost Competition

Thursday July 3, 2025 7:25 am PDT by
Apple's position as the dominant force in the global true wireless stereo (TWS) earbud market is expected to continue through 2025, according to Counterpoint Research.The forecast outlines a 3% year-over-year increase in global TWS unit shipments for 2025, signaling a transition from rapid growth to a more mature phase for the category. While Apple is set to remain the leading brand by...
iPhone 17 Pro in Hand Feature Lowgo

iPhone 17 Pro Max Battery Capacity Leaked

Thursday July 3, 2025 5:40 am PDT by
The iPhone 17 Pro Max will feature the biggest ever battery in an iPhone, according to the Weibo leaker known as "Instant Digital."In a new post, the leaker listed the battery capacities of the iPhone 11 Pro Max through to the iPhone 16 Pro Max, and added that the iPhone 17 Pro Max will feature a battery capacity of 5,000mAh: iPhone 11 Pro Max: 3,969mAh iPhone 12 Pro Max: 3,687mAh...
iPhone Car Key Kia

Here's Which Vehicles Offer iPhone Car Keys

Sunday July 6, 2025 3:03 pm PDT by
In 2020, Apple added a digital car key feature to its Wallet app, allowing users to lock, unlock, and start a compatible vehicle with an iPhone or Apple Watch. The feature is currently offered by select automakers, including Audi, BMW, Hyundai, Kia, Genesis, Mercedes-Benz, Volvo, and a handful of others, and it is set to expand further.Apple has a web page with a list of vehicle models that ...
Apple Watch Ultra Night Mode Screen

Apple Watch Ultra 3 Launching Later This Year With Two Key Upgrades

Wednesday July 2, 2025 1:13 pm PDT by
The long wait for an Apple Watch Ultra 3 appears to be nearly over, and it is rumored to feature both satellite connectivity and 5G support.Apple Watch Ultra's existing Night Mode In his latest Power On newsletter, Bloomberg's Mark Gurman said that the Apple Watch Ultra 3 is on track to launch this year with "significant" new features, including satellite connectivity, which would let you...
imac video apple feature

Apple Launching These 15+ Products Later This Year

Sunday July 6, 2025 8:05 am PDT by
The calendar has turned to July, meaning that 2025 is now more than half over. And while the summer months are often quiet for Apple, the company still has more than a dozen products coming later this year, according to rumors.Below, we have outlined at least 15 new Apple products that are expected to launch later this year, along with key rumored features for each.iPhone 17 SeriesiPho...
Future M5 Chip Devices

M5 Chip Rumored to Debut in These Five Apple Products Later This Year

Friday July 4, 2025 9:14 am PDT by
Apple's next-generation M5 chip is expected to debut in five new products later this year, including the iPad Pro, Vision Pro, MacBook Pro, Mac mini, and iMac.M5 chips will reportedly be manufactured with TSMC's latest third-generation 3nm process, which should result in slight performance and power efficiency improvements over M4 chips fabricated with its second-generation 3nm process. ...

Top Rated Comments

thadoggfather Avatar
70 months ago


The watchOS 6.1.3 update includes important bug fixes, addressing an issue that could prevent the irregular heart rhythm notification feature from working properly for Apple Watch ownersin Iceland.

Strangely specific geographical bug
Score: 17 Votes (Like |Disagree)
JVNPhoto Avatar
70 months ago
Acknowledgement Apple has Icelandic users - wow! Now if only they would give us Apple Music, iTunes Store, Apple TV+, Books, iCloud Music Library, Movie Rentals, iTunes Match and every other feature everyone else seems to have ?
Score: 13 Votes (Like |Disagree)
Toratek Avatar
70 months ago
So.... an update for Bjork?
Score: 10 Votes (Like |Disagree)
Mick-Mac Avatar
70 months ago
I'm still pining for custom watch faces. So exasperating - why can't we have that?
Score: 10 Votes (Like |Disagree)
Hodar1 Avatar
70 months ago
My cellular plan has "unlimited Data", and as these iOS updates are not horrendously large - I wish we could opt out of the manditory Wi-Fi download requirement.
Score: 10 Votes (Like |Disagree)
Expos of 1969 Avatar
70 months ago

ummm, where did you get that? I responded that youcan opt out of automatic updates on both Apple Watch and iPhone. quotes from the posts: " I wish we could opt out" and "You cannot even opt out when updating your phone". So yah, you can opt out, pretty easily.

Update using only your mobile data? I have never even tried, so while I would assume so, I have no idea. I don't have unlimited on my mobile, so I use wifi for all updates.

oops, my bad. Now I see what you said. Never mind!
Never mind?? Perhaps an apology for you saying "Do you really know what you are talking about?" is in order?
Score: 8 Votes (Like |Disagree)