With the iOS 13 share reaching 77%, the App Store requires developers to start on April 30, 2020, and applications submitted for App Store review must support iOS 13. It must also be compatible with the screen resolution of new devices such as iPhone 11 Pro and iPhone 11 Pro Max.
Sign in with Apple is required for FB / Google login
In addition, the App Store Review Guidelines have also been updated. One of the most important changes is that applications that require Facebook / Google sign-in must also support the Sign in with Apple feature. The iPad strongly recommends support for multitasking functions such as Split View and Slide Over.
Sign in with Apple Convenience and privacy
Sign in with Apple allows users to easily sign in to their apps and websites with their Apple ID. Instead of filling out forms, verifying email addresses, and choosing a new password, users can set up an account with Sign in with Apple and start using your app immediately. All accounts are protected with two-factor authentication and are extremely secure, and Apple does not track user activity in a user's app or website. More importantly, it prevents Apps developers from knowing the user's E-mail Address, which improves privacy protection.