Vietnam has users can call free on Facebook MessengerAfter allowing users in a number of countries use free calling function test on the Messenger application, Facebook recently allowed users in Vietnam utilize this feature.Facebook first tested the function call for free over the Internet on its Messenger chat application from 2013, initial users in America and Canada, to the beginning of the year, this function continues to be extended to users in many other countries and so far, Vietnam has users can use this feature.With this feature, users can use Messenger to call free via the Internet to other Facebook users, similar to the free calling application as Viber or Hangouts.This function works for cellular users on the web. With mobile users requires the device to install the messaging Messenger.With users to use Messenger on mobile applications, you click on the phone icon in the upper right corner of the Messenger's chat interface to start the call. While that with Facebook users on the web, to make free calls you click on the camera icon in the top right corner of the chat frame (free video calling function), however users can optionally turn off video functionality to just use the normal calling function if desired.If Miss a call from your friends, the user will get a notification every time access to Messenger.
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