Apple Releases watchOS 5.1.3 With Bug Fixes and Performance Improvements
Apple today released watchOS 5.1.3, the fourth update to the watchOS 5 operating system that runs on modern Apple Watch models. watchOS 5.1.3 comes more than a month after the release of watchOS 5.1.2, a major update that brought ECG functionality.
watchOS 5.1.3 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.

watchOS 5.1.3 is a minor update that focuses on performance improvements and fixes for bugs discovered since the release of watchOS 5.1.2. We didn't find any changes during the watchOS 5.1.3 beta testing period. Apple's release notes do not mention any new features or include information beyond the general "this update includes improvements and bug fixes" statement.
The prior update watchOS update, watchOS 5.1.2, introduced the long-awaited ECG feature for the Apple Watch Series 4, allowing Apple Watch owners to take single-lead electrocardiograms to detect atrial fibrillation, which can be a sign of serious health problems.
Popular Stories
Apple has unveiled a whopping nine new products so far this March, including an iPhone 17e, iPad Air models with the M4 chip, MacBook Air models with the M5 chip, MacBook Pro models with M5 Pro and M5 Max chips, the all-new MacBook Neo, an updated Studio Display, a higher-end Studio Display XDR, AirPods Max 2, and now the Nike Powerbeats Pro 2.
iPhone 17e features the same overall design as...
While the iPhone 18 Pro and iPhone 18 Pro Max are not expected to launch for another six months or so, there are already plenty of rumors about the devices.
It was initially reported that the iPhone 18 Pro models would have fully under-screen Face ID, with only a front camera visible in the top-left corner of the screen. However, the latest rumors indicate that only one Face ID component...
iOS 26.4 isn't the major update with new Siri features that we hoped for, but there are some useful quality of life improvements, and a little bit of fun with an AI playlist generator and new emoji characters.
Playlist Playground - Apple Music has a Playlist Playground option that lets you generate playlists from text-based descriptions. You can include moods, feelings, activities, or...