Google has updated its Hangouts messaging and voice calling app with support for Apple’s CallKit, the iOS 10 feature that enables VoIP services to use the iPhone’s built-in dialer and phone app to both make and receive calls. Once the new feature is enabled within Hangouts, users can initiate phone calls using the iPhone’s built-in Phone app or with Siri voice commands, and also receive incoming calls form Hangouts using the stock iOS call UI. You can enable CallKit support for Hangouts while navigating to Settings within the app and switch the toggle for “Answer on lock screen.” That will make...