Tap the Messenger icon at the top of the screen to view your inbox.

Select a contact, type your message in the text box, and tap Send . Essential Tips for Free Messaging

Clicking links that take you away from Facebook (like YouTube or news sites) will typically require you to use your own data.

Any messages you send or receive while in "Free Mode" will automatically sync across all your devices once you are back on a standard internet connection. Key Limitations to Keep in Mind

To keep the service free, photos and videos are typically hidden or blurred. You will often see a button to "Use Data" to view this media.

If you find the app is constantly asking to use data, you can adjust the Data Saver settings in the Messenger menu to control how media is loaded.

You can still manage group chats, react to messages, and update your status. How to Use Messaging on free.facebook.com