Nsryjdtyk

it's my first time working with firebase phone authentication , but when the number is at the device which the app is in after code is sent if the user enter the code he gots error then the app login automatically after few seconds!
how can i fix this issue ?

private void signInWithPhoneAuthCredential(PhoneAuthCredential 

              credential) {

    mAuth.signInWithCredential(credential)

            .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {

                @Override

                public void onComplete(@NonNull Task<AuthResult> task) {

                    if (task.isSuccessful()) {

                        // Sign in success, update UI with the signed- 

                        //in user's information

                        Log.d(TAG, "signInWithCredential:success");



                        FirebaseUser user = 

                        task.getResult().getUser();

                        firebase_uid = user.getUid();





                        // [START_EXCLUDE]

                        //updateUI(STATE_SIGNIN_SUCCESS, user);

                        // [END_EXCLUDE]

                    } else {

                        // Sign in failed, display a message and update the UI

                        Log.w(TAG, "signInWithCredential:failure", task.getException());

                        if (task.getException() instanceof FirebaseAuthInvalidCredentialsException) {

                            // The verification code entered was invalid

                            // mVerificationField.setError("Invalid code.");



                            loadingIndicator.dismiss();



                            Toast.makeText(Sign_up.this, "كود التحقق الذي أدخلته غير صحيح", Toast.LENGTH_LONG).show();

                            // [END_EXCLUDE]

                        }else if(task.getException() instanceof FirebaseTooManyRequestsException)

                        {

                            Toast.makeText(Sign_up.this, "لقد قمت بمحاولة التحقق عدة مرات , حاول لاحقا", Toast.LENGTH_LONG).show();



                        }else

                        {

                            Toast.makeText(Sign_up.this, task.getException().getMessage(), Toast.LENGTH_LONG).show();



                        }



                    }

                }

            });

}