The app integrates 4 Firebase modules out of the box. Some of these are essential for app operation (Like Phone Authentication). In this step, we will configure Firebase so in the next steps you would use this project to do the platform-specific work needed to integrate Firebase.
Head over to https://console.firebase.google.com and create 1 Firebase project using the "Add New Project" Button. The created project will be attached to your Google account.
It is required to have at least the "Phone Authentication" service enabled on your Firebase project. In the Left pane chose Authentication and then enable the "Phone" from this page.
The basic configuration of the Firebase console is done now. All the following sections Firebase configuration part will be applied to this project.
Keep in mind server and client and everything related to the app need to be configured in one single firebase project. Please refrain from using different firebase projects as that would lead to the login feature not working.