Do you want to log out of Facebook messenger? Following the below steps can answer your question of How to log out of Facebook messenger using Facebook online applications:
1) Open your Facebook android application
2) Click on the Setting and Privacy option in the menu section.
3) Go to the “Where you have logged in” option.
4) There will come all devices, where you have logged in. Select the messenger option and click on logout button. 5) Hence, You will be log out of Facebook messenger. VIsit on our blog for more information.