TEKNOKIA.com - Google has announced his video chat application on its official blog. Now can be installed on android devices globally on Google playstore.
When first opened the Google duo didn't use a Google account to sign in. but using a cell phone number of the user. We just enter your phone number and wait for verification through sms, if you did not receive the verification code could also through calls.
It looks very simple, there is only one video call logo key. After the press will display the contacts list a cell phone number that is on our mobile devices. If we do not yet exist in contacts that using Google Duo App, we tap our invite a friend via buttons invite every number.
In addition, this Google Duo App directly connecting the front camera and ready to use video calling.
Because features knock-knock, this application will display live the caller's video before answering the call.
source: Google blog