Tap the (Settings) and scroll to See more in Accounts Center .
After selecting and your preferences, tap Create files . download messages from facebook messenger
Select Your information and permissions , then click Download your information . Tap the (Settings) and scroll to See more in Accounts Center
Click Download or transfer information . Choose your Facebook account and select Specific types of information . Select Messages: Check the box for Messages and click Next . Set Preferences: click your profile picture (top-right)
Log in to Facebook, click your profile picture (top-right), and select Settings & Privacy > Settings .
The mobile process is similar but accessible directly within the Facebook or Messenger apps. Open the and tap the Menu (three lines).
Click See more in Accounts Center in the left-hand menu.