1. Navigate to the More tab.
  2. Scroll down to the bottom and tap Log Out.

NOTE: If you have logged into the Mobile App for the first time, but do not see any Teams you wish to follow, you will not be able to complete the login process.  Tap the 'Back' button in the app or on your mobile device to return to the login screen.  Click here for further assistance as to why you may not be able to see your desired Team.