Facebook asks for a code but I don’t have my phone? A: Use one-time backup codes (saved earlier) or recover via email.
Logging in and out constantly is a pain. Here is the desktop pro-tip: fb login desktop
You can set up notifications that alert you whenever your account is accessed from a new device or browser. This allows you to "Log Out" of that session remotely if it wasn't you. Facebook asks for a code but I don’t have my phone