Log Out Of Facebook Messenger
Well, it's not possible to sign out from within the Messenger but there is a simple workaround to do so if you're utilizing an Android gadget. iPhone, iPad and WP users can likewise logout without uninstalling the app but that needs utilizing Facebook's web interface, either from your mobile browser or desktop. Though, this isn't really a user friendly method however will do the needed job.
Logout from Messenger on Android
Go to phone Settings > Applications and open the Messenger app. Click the 'Clear information' alternative and now open Messenger. You'll now able to log into Messenger using a different Facebook account. Note: If you've Facebook app installed and you're singed into it then Messenger will still show your previously linked account that can be configured immediately.
To check in using a different ID, simply click the 'Switch Account' option. In case you wish to unlink your earlier account from Messenger, just logout from Facebook app.
Keep in mind: Cleaning information will remove the app settings and all your messenger data (saved locally) such as pictures. Nevertheless, the messages and pictures will be synced again with your account. Follow the below alternate procedure instead, if you do not want the data to be rubbed out.
Logout from Facebook App/ Messenger App on iOS, Android, Windows Phone and Desktop (Recommended Technique).
This is an extremely helpful way to remotely logout from Facebook from any or all the devices to which your Facebook account is connected with. It comes genuine helpful in case you loose access to a specific gadget and wish to avoid unauthorised access to your account. The benefit of this workaround is that it doesn't wipes your regional Messenger information and deals with all significant mobile OS like iOS (iPhone, iPad, iPod touch), Android and Windows Phone.
To do so, log into your Facebook account from your desktop internet browser or usage Chrome browser to log into facebook.com on your mobile phone and decide for desktop version of the site. In Facebook, navigate to Settings > Security and click on "Where You're Logged In" alternative.
Here you can see all your Facebook active sessions along with information like Device type. Select the Messenger one and click on "End activity". Now open Messenger on your phone and it'll immediately log off (wait on an instant and make sure you're connected to Web.).
Dear Facebook, please don't irritate users by managing basic functionality. Take that! And one more thing please don’t forget to share this awesome trick to use the Log Out Of Facebook Messenger with your friends.