You can set the phone to vibrate or not when receiving a call, limit mobile data usage, unregister your phone number in case you're switching numbers or don't want to use Duo anymore, see and manage your blocked numbers, and activate one of Duo's unique features: Knock Knock.
This basically shares the caller's video stream before the recipient answers the call, as a way to entice them to pick up the phone.
Part of what made Whats App so popular as a messaging client, and then again as a Vo IP alternative, was the low-entry barrier (plus free price and multiplatform support).
If you wanted to send an SMS to someone, you must have had their phone number, which meant you could also contact them via Whats App — and for free. Duo is using this same low-entry barrier for video calls.
Of the two communication apps that Google announced at I/O, Duo surely seemed like the less interesting one.
Video calls have been done again and again, and by now, if you have someone you want to talk to and see at the same time, odds are you already have your preferred way of doing that.
Compared to Facetime, Skype, Hangouts, and many other services, setup is faster and simpler, and usage afterward is more straightforward.
And yes phone numbers might be ripe for abuse and spam, but so are usernames and email addresses. I'd wager the reason is that Google wanted to do less, but do it better. Launch the app and you're greeted with your face from the front camera on your phone (we've already established it might not be sexy), a white bottom overlay with a button, and an overflow menu on the top right.
Even Whats App voice calls are often choppy, suffering from 2-3 seconds lag and frequently cutting off and disconnecting. Not only was it able to connect, it also kept the call going against all odds.Once you've made a couple of calls, the bottom overlay will start populating with your most recent contacts. (You can't see me now, but you will in a while.) If you're a geek like me, the first thing you'll look for are the settings.They're nested in the overflow menu, along with Help and Feedback, and there aren't many.How can Duo be so good when most of what you're seeing are pixelated images?
Well, those are not a testament to how bad Duo is, but quite the contrary, they prove just how good the app is at keeping the call going regardless of how poor the connection is.While using the app, I've found this interface intuitive and quite easy to get used to.