public function getFactorDescription() {
  return pht(
    'Attach a mobile authenticator application (like Authy '.
    'or Google Authenticator) to your account. When you need to '. 
    'authenticate, you will enter a code shown on your phone.');
}

public function getEnrollDescription(
  PhabricatorAuthFactorProvider $provider,
  PhabricatorUser $user) {

  return pht(
    'To add a TOTP factor to your account, you will first need to install '.
    'a mobile authenticator application on your phone. Two applications '.
    'which work well are **Google Authenticator** and **Authy**, but any '.
    'other TOTP application should also work.'.
    "\n\n".
    'If you haven\'t already, download and install a TOTP application on '.
    'your phone now. Once you\'ve launched the application and are ready '.
    'to add a new TOTP code, continue to the next step.');
}