When you're looking to video chat, Android users aren't hurting for options, and you've got your pick of everything from Skype to Snapchat. Sometimes, though, simplicity is best, and two years back Google introduced its no-nonsense video calling app: Duo. While Duo's largely stayed true to its straightforward roots, we've slowly been seeing the software become fleshed out with some useful new features. One that Google's been working on for a while now is the ability to share your phone's screen with the party you're calling, and while it's still not live quite yet, we're finally getting a look at how it's likely to work.