5. **What types of multimedia files can be sent through Messenger, and are there any size restrictions on the files?
4. **How does Messenger handle data privacy and what options do users have to control their data within the app?
3. **Can I use Messenger without a Facebook account, and what are the limitations if I choose to do so?
2. **What are some of the key features in the latest update of the Messenger service, and how do they enhance communication?
**How does end-to-end encryption work in Messenger, and is it turned on by default for all conversations?
5. **How do Messenger's audio and video call qualities compare to other messaging platforms like WhatsApp or Skype?
4. **What features does Facebook Messenger offer for business communication and customer support?
3. **How does Facebook Messenger integrate with other Facebook services and third-party applications?
2. **What are the differences in functionalities between the Facebook Messenger app and the desktop version?
**How does Facebook Messenger ensure the privacy and security of user conversations?
