If I uninstall Facebook Messenger from my iPhone and then re-install it from the App Store, it remembers my login. "Login as [Name]? Not you?"
Where does it store this? How can I disable that? I thought deleting the app also deleted the data, including username and password!
I checked iCloud app data, and there is nothing there labeled Facebook.
Note: that I'm not talking about the full Facebook app, only the official Messenger app, also made by Facebook Inc.
I do not use the builtin iOS 6 Facebook login, so that shouldn't be the issue.