Duo is a simple, fast one-to-one video calling app for everyone—whether you’re on Android or iOS, a fast or slow connection, in New York or New Delhi. Like Google Allo, Duo is based on your phone number, allowing you to reach anyone in your phonebook. And its simple interface fades away when you’re in a call, so it’s just the two of you.
It also introduced a feature called Knock Knock, which gives you a live video of the other caller before you answer.
Duo will also be available on Android and iOS this summer.
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