An update rolling out to Google phones, including Pixel and Android One devices, will give the Phone app a new but familiar feature. Android Police has discovered in an APK teardown that the app is getting circular floating chat heads, which are pretty much identical to Facebook Messenger's. They'll appear when you leave the call screen -- you can drag them anywhere on your display, and they'll stay visible on top of other apps. You'll also see a menu when you tap on the icon, with options to go back to call, to mute, to put it on speakerphone or to end it. Unfortunately, it's unclear if it'll eventually make its way to all Android devices.