Here's how to logout of messenger using the Facebook app: Go to Settings and Privacy. Then scroll down and go to Security and select Security and login. Now you'll see the list of devices where you are logged in. Select the Messenger session and click on Log out.
Click on Security and login. Now, from the section marked Where you're logged in find your device and click on the three dots to the right of its name, then select Log Out.
How do I log out of the Facebook for iPhone or iPad app?
Logging out of the Facebook App on iOS and Android Select the menu button (three lines) in the top right corner. Scroll down to the very bottom and select Log Out.
Using the Messenger app
To start, go to the home screen on your iPhone (Image 1). Click on the dark blue icon with a white “f” on it to access your Facebook account (this is the Facebook application icon). Type in your, previously established, E-mail address and your Facebook password to log into your account (Image 2).
If you're logged in to Facebook on your browser, you should consider clearing your browser cache and cookies too. When you let an app use your Facebook account details, for gaming purposes, for instance, the login tends to take place from the browser.
Log Out Of Facebook Messenger Using The Facebook App (iOS & Android) You don't necessarily need to use the Facebook Messenger itself to log yourself out. You can use the official Facebook app as well to manage your logged-in devices and sign yourself out from various services including the Messenger.
From the Home tab, swipe right. Tap the three dots icon next to your workspace name. Tap Sign Out. Tap Sign Out to confirm.
Learn about Netflix features on iPhone, iPad, and iPod touch, including how to set up and sign out of your account.
Go to www.google.com. To sign out, tap your profile image on the top right. Sign out. (If you see an option to "Sign in" instead of your profile image, you're already signed out.)
Sign out on your iPhone, iPad, or iPod touch