How to Add Firebase Auth to Ionic / Capacitor generated iOS App
Add iOS to the Ionic App if not already added
If you have not already added a iOS app to the ionic project, you can do so by executing the following commands.
Add a new iOS app to Firebase
In the firebase project home
add a new iOS app to Firebase by clicking on the iOS icon.


Register the app name and nickname

Download the GoogleService-Info.plist and place it in the ios app

Add the Firebase SDK to the iOS app
