Firebase Auth: Get users by email or phone number

Question

I am building an Android App where I am using different ways for the user to register himself, like Email/Password, Phone, Google, Facebook, Twitter. I also

Answer 1

You can get user's email or phone number like this:

FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
String phoneNumber = user.getPhoneNumber();
String email = user.getEmail();