what is need to be done here basically ?

[Pragyanshree Das]

snippets-android/auth/app/src/main/java/com/google/firebase/quickstart/auth/PhoneAuthActivity.java

Line 160 in 42a07d0

 private void updateUI(FirebaseUser user) { 

[Rosário P. Fernandes]

@ShreeOcean It's up to you, whatever you want to do when the authentication finishes. You can update a TextView or take the user to a new screen, etc.

We have a sample app in firebase/quickstart-android where the updateUI method displays a "Authentication Successful" text on a TextView:

https://github.com/firebase/quickstart-android/blob/77cbc3ecaf38c4496e1c62a06320d2f00d0ef4db/auth/app/src/main/java/com/google/firebase/quickstart/auth/java/PhoneAuthFragment.java#L293-L308