2. Click the arrow button pointing down on the top ideal side of any page.
3. And now merely select the "Logout" link from the list of options in the drop-down menu to end your present session on Facebook.com.
HOW DO I LOGOUT OF FACEBOOK MOBILE ACCOUNT IF YOU DO N'T HAVE YOUR PHONE.
This details works and also needed for those of you who either lost your phone or had it stolen.
Utilizing a computer system, go to Facebook.com and log into your account with your email and password.
Click the arrow button pointing down at the top of any page and select "Settings."
Now click the "Mobile" icon on the left to go to your mobile settings page.
Click on "Lost your Phone?" and then choose "Log Out on Phone."
Click the arrow button on top right of any page.
Scroll down to the bottom and tap on the "Log Out" link to close your Facebook account on an iOS gadget.
WAYS TO SIGN FROM FACEBOOK ON ANY OTHER MOBILE PHONE INCLUDING WINDOWS PHONE.
Select "Edit" from the "Your Internet browsers and Apps" option and click "Remove" beside the gadget where you desire to end your session.
Then try to find the "Where You're Logged In" alternative and click "Edit."
And now merely click the "Close" button to log out from the Facebook app.