Can I access and use the Messenger service on multiple devices simultaneously, and how is message synchronization managed across those devices?
Does the Messenger service offer end-to-end encryption for all messages, and how does it work?
Are group chats supported on the Messenger service, and is there a limit to the number of participants?
Can I use the Messenger service to send files or images, and are there size limits for these attachments?
How does the Messenger service ensure the privacy and security of my conversations?
What are the differences between using Messenger on a mobile app versus a web browser, and are there unique features on each platform?
How does Messenger integrate with other Facebook services, and what are the benefits of these integrations for users?
Are there specific privacy settings or controls within Messenger that users should be aware of to protect their personal information?
What features does Messenger offer for business communication, and how can businesses leverage these tools to improve customer engagement?
How does end-to-end encryption work in Messenger, and is it available for all types of conversations?