Several days after the rest of its operating system updates, Apple finally released watchOS 5.2, which most notably extends the Apple Watch Series 4’s ECG to Hong Kong and many European countries. Previously, these features were available only in the United States, Guam, Puerto Rico, and the US Virgin Islands, but Apple has now added Austria, Belgium, Denmark, Finland, France, Germany, Greece, Hong Kong, Hungary, Ireland, Italy, Luxembourg, Netherlands, Portugal, Romania, Spain, Sweden, Switzerland, and the United Kingdom. Users of other Apple Watch models in those countries can also now get irregular heart rhythm notifications.
For those who don’t have an Apple Watch Series 4 or aren’t in one of these countries, watchOS 5.2 also adds support for the second-generation AirPods (see “Second-Generation AirPods Gain “Hey Siri” and Optional Wireless Charging,” 20 March 2019) and supports real-time text (RTT) for phone calls.
You can install the 439 MB update using the iPhone’s Watch app—go to Watch > General > Software Update.