How do I add contacts in Messenger service?
Is it possible to make voice or video calls using Messenger service?
What security measures does Messenger service have in place?
How can I send a message using the Messenger service?
What are the privacy settings available in Messenger?
How can I make video calls on Messenger?
What steps should I follow to block someone on Messenger?
How can I access my message history in Messenger?
What are the key features of a Messenger service?
How does end-to-end encryption work in Messenger services?
