Like Google Duo, but don't have many of your contacts using it? Well, that's not a problem anymore, as now you can make Duo calls to even those who don't have the app installed on their devices. A Reddit user noticed this recently, and shared their observation. Those who tested the feature noticed that it works with audio-only calls as well. Further, recipients can do stuff like answer/hangup the call, mute it, and switch cameras like any other normal Duo user. What's more, they can also block a caller from contacting them again. However, if the someone without Duo installed... from GSMArena.com - Latest articles http://ift.tt/2Exy7I8 via IFTTT