Follow the steps below to change or log in to a different Facebook account on Call of Duty: Mobile.
 
Please note: Your progress is tied to the original account you used. Progress will not carry over to another Facebook account if you choose to change logins.
  1. Open the Facebook app on your device.
  2. Go to Settings.
  3. Tap Apps and Websites.
  4. Tap Call of Duty: Mobile then tap Remove.
  5. Log out of your Facebook account in a browser and within the Facebook app.
  6. Relaunch Call of Duty: Mobile and tap the Facebook icon at the login screen to log in to a different Facebook account.