- In android/app/src folder, create 2 folders named "dev" and "prod"
- Add the "google-services.json" files in the corresponding folder
- Open "Runner.xcodeproj" in Xcode
- In Runner folder, create 1 folder named "Firebase" and create 2 folders named "dev" and "prod" in it.
- Add the "GoogleService-Info.plist" files in the corresponding folder