Turn Off Facebook Messenger
Well, it's not possible to sign out from within the Messenger but there is a basic workaround to do so if you're utilizing an Android gadget. iPhone, iPad and WP users can likewise logout without uninstalling the app however that requires utilizing Facebook's web user interface, either from your mobile internet browser or desktop. Though, this isn't 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' choice and now open Messenger. You'll now able to log into Messenger using a different Facebook account. Note: If you've Facebook app set up and you're singed into it then Messenger will still show your previously connected account that can be configured immediately.
To sign in using a different ID, simply click the 'Change Account' option. In case you want to unlink your earlier account from Messenger, just logout from Facebook app.
Keep in mind: Cleaning data will get rid of the app settings and all your messenger information (saved locally) such as pictures. Nevertheless, the messages and images will be synced once again with your account. Follow the below alternate procedure rather, if you don't desire the data to be cleaned off.
Logout from Facebook App/ Messenger App on iOS, Android, Windows Phone and Desktop (Recommended Technique).
This is an extremely useful method to from another location logout from Facebook from any or all the gadgets to which your Facebook account is connected with. It comes genuine useful in case you loose access to a specific gadget and wish to avoid unauthorised access to your account. The advantage of this workaround is that it doesn't clean your local Messenger information and works 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 web browser or use Chrome browser to log into facebook.com on your smartphone and choose desktop variation of the website. In Facebook, navigate to Settings > Security and click "Where You're Visited" option.
Here you can see all your Facebook active sessions in addition to details like Gadget type. Select the Messenger one and click "End activity". Now open Messenger on your phone and it'll instantly log off (wait on an instant and make certain you're connected to Web.).
Dear Facebook, please don't frustrate users by pulling off fundamental performance. Take that! And one more thing please don’t forget to share this awesome trick to use the Turn Off Facebook Messenger with your friends.