Messenger Call Service
US /ˈmesɪndʒər kɔːl ˈsɜːrvɪs/
UK /ˈmesɪndʒər kɔːl ˈsɜːrvɪs/

1.
Serviço de Chamada do Messenger
A feature within the Messenger application that allows users to make voice or video calls to their contacts over the internet.
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I used the Messenger Call Service to talk to my friend who lives abroad.
Usei o Serviço de Chamada do Messenger para falar com meu amigo que mora no exterior.
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The new update improved the quality of the Messenger Call Service.
A nova atualização melhorou a qualidade do Serviço de Chamada do Messenger.