Logging off your Facebook app on your Android smartphone can help ensure your account is not accessed by anyone but you. When you log off, all of your log-in information including your password is removed. The next time you log in, you will need to supply your user information again. Logging off on your Android phone does not cancel your account or alter any of your settings.
Touch "Home" on your Android phone, then touch "Menu."
Touch the "Facebook" icon to open the app.
Touch "facebook" at the top of the screen, then touch your phone's "Menu" to display a list of options for the app.
Touch "Logout" and wait for confirmation your were successfully logged out.
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