Open the Facebook app or website
Tap the menu icon
Go to Settings and privacy
Tap Settings
Open Password and security
Tap Where you’re logged in
Find the device using Messenger
Tap the three dots next to it
Select Log out
On Android, you can also clear Messenger app data
Go to Settings on your phone
Tap Apps
Select Messenger
Tap Storage
Tap Clear data or Clear storage
On iPhone, uninstalling the Messenger app logs you out
Press and hold the Messenger app
Tap Remove App
Tap Delete App
If you use Messenger in a browser, log out of Facebook in that browser
Open Facebook
Tap the account menu
Select Log out