Is there any way to add reCAPTCHA, since reCAPTCHA token is required for Firebase Phone Authentication
Hi! No, no recaptcha at the moment, but perhaps it is possible to add that with a third party plugin once we have support for those later this year.
However, with the right backend you can make 2FA implementations using SMS (but this is likely a backend service you have to pay for).
Not sure what you mean by “firebase phone authentication” - plenty of people have done firebase auth or push notifications or data, so those should work.