This app is not authorized to use Firebase Authentication.Please verify that the correct package name and SHA-1 are configured in the Firebase Console
A simple solution for App-signed enabled app.
- Find SHA-1 certificate fingerprint from App signing from play store console.
UPDATE (10-10-2020) FOR NEW PLAYSTORE CONSOLE:
Play store Console > Your project > Release > Setup > App signing
FOR OLD PLAYSTORE CONSOLE:
Play store Console > Your project > Release management > App signing
- Place both SHA1 fingerprints to your firebase app.
Firebase Console > Your project > Settings of the app > Add Fingerprint
- The good thing is we don't need to generate SHA1 fingerprint from
cmd with the help of the
Keystore.
When you updated Android Studio, the debug key which is used to sign debug apps might have changed. Just add the new SHA-1 checksum of your debug key in the firebase console.
Easiest way would be to connect/sync to firebase from
Tools>Firebase>Authentication>Connect>Sync
If you want to do it manually or for release keystore, first generate SHA-1 checksum using following command:
keytool -list -v -keystore KEYSTORE_PATH -alias ALIAS_NAME
Then copy the SHA-1 checksum and go to:
Firebase Console > Your project > Settings of the app > Add Fingerprint
For more info, read this guide: Authenticating Your Client | Google APIs for Android
If you are using a Emulator for phone OTP verification it won't work since it does not have a sim. So try installing it to your mobile(with sim) and check if the error persists.