If anyone has installed Hangouts on their Jolla they may be seeing the message that updated Google Play Services (GPS) is required, which never updates on Jolla.

The version of GPS installed from My Jolla Blog is 3.1.36 however I've found the APK for 4.3.23 available here (download link at the end of the article) and installing this APK on the Jolla (over the top of the existing package) went without a hitch - Hangouts has stopped complaining and is now working again!