Sign up, sign in on mobile App

Hi @luongtien, you can log in using your phone number. You can give it a try on the demo site:

https://wordpress.dalenguyen.me/social-login-new/

And pick Phone as the authentication method.

The setting up is pretty straightforward. You can take a look at the documentation here: https://firebase-wordpress-docs.readthedocs.io/en/latest/auth/work-with-firebaseui-web.html

So if I want to do it on phone app, is there any API to help me do it?

If you’re building mobile apps, then you have to reference Firebase documentation on how to do it based on the technology you are using.

https://firebase.google.com/docs/auth