Firebase for phone authentication it work on mobile debug but not work on release signed APK, but i do,
When I'm update implementation 'com.google.firebase:firebase-auth:19.3.2' to 21.0.1 then showing error

error: incompatible types: Executor cannot be converted to Activity
                TaskExecutors.MAIN_THREAD,
                             ^

I'm using this code :

private void sendVerificationCode(String number) {
    PhoneAuthProvider.getInstance().verifyPhoneNumber(
            number,
            60,
            TimeUnit.SECONDS,
            TaskExecutors.MAIN_THREAD,
            mCallBack
    );
}