Jun 26, 2018 · Unable o turn off Two-Factor Authentication on Apple iPhone iOS 12, iPad, stop Two-Factor Authentication notifications, how to turn off Two-Factor Authentica... I recently wrote an article on how to turn on Two-Factor Authentication on your iPhone for better security. Apple introduced this feature in iOS 10 And then, with the release of iOS 11, iPhone users were automatically upgraded from Apple's less secure Two-Step Verification feature. Aug 23, 2016 · For example, if your normal Apple ID password is “applepassword” and the two-factor authentication code is “821 481”, then the new proper password to login on the older iOS version would become: “applepassword821481” No spaces, no quotes, just the password appended by the two-factor auth code. Enable two-factor authentication for your developer Apple ID at Settings> iCloud > Password & Security > Two-Factor Authentication. Sign in to iCloud on your iOS device with your personal Apple ID. Add your developer Apple ID to your device at Settings > Passwords & Accounts > Add Account > iCloud. Switch from two-step verification to two-factor authentication Two-factor authentication is an extra layer of security for your Apple ID designed to ensure that you're the only person who can access your account, even if someone knows your password.