Firebase OTP working fine on debug apk but not release apk

Question

I am using flutter and firebase OTP. The SMS is received while running the debug APK of my app. However, I am getting this message while running the release APK using the command flutter run --release.

This is the returned message:

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 safety_net_token was passed, but no matching SHA-256 was registered in the Firebase console. Please make sure that this application’s packageName/SHA256 pair is registered in the Firebase Console. ]

Kindly note that I am running this app directly on my phone and not by installing it from google play.

I tried the following on firebase console:

Debug keys
Release Keys
Google Play signing and upload keys certificates.
Also my google-services.json is up-to-date.
Flutter clean and pub get before running in order to make sure that the changes will occur.

I tried all the solutions presented by similar questions such as adding an email in firebase, adding google play keys, etc. and unfortunately none of them worked.

Update: Solved, the problem was wrong naming inside the manifest file as the error message stated:
Please make sure that this application’s "packageName/SHA256" pair is registered in the Firebase Console. Usually, it is the sha1 or sha256 keys, however this time it was the package name.

score 2 · Accepted Answer · answered Jun 27 '22 at 11:11

2

You have to generate SHA-1 for relase build and add it to the firebase console for the same project that you have registered.

answered Jun 27 '22 at 11:11

Hardik Mehta

2,195
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You have to re download google-service.json file once after adding SHA1 for release build and try again – Hardik Mehta Jun 27 '22 at 11:44
sorry man didn't work – Majd Harb Jun 27 '22 at 12:06
did you replace with old google-services.json file ? and try to clean and run again to check – Hardik Mehta Jun 27 '22 at 12:08
You should add SHA256 also – Hardik Mehta Jun 27 '22 at 12:11
I added both sha1 and sha256 of debugging, release, and google play keys, yet somehow otp is still not functioning with real numbers (only testing numbers work) – Majd Harb Jun 27 '22 at 12:13
did you replace your old .json file with new one ? – Hardik Mehta Jun 27 '22 at 13:18
Please check this : https://stackoverflow.com/questions/62384384/firebase-phone-auth-not-working-in-apk-release-mode or this https://stackoverflow.com/questions/55774387/firebase-phoneauth-with-real-phone-number-is-not-working-but-whitelisted-number – Hardik Mehta Jun 27 '22 at 13:22
Thanks guys! it turned out to be the package name in the manifest file... – Majd Harb Jun 29 '22 at 08:19

score 2 · Answer 2 · answered Oct 23 '22 at 12:09

2

do flutter clean and flutter pub get then.
use flutter fire cli to link the firebase project
Generate a signin report by doing cd android and .\gradlew signingReport
look for gradient release and upload that vairent sha1 and sha256 key. hope this sloves your problem.

answered Oct 23 '22 at 12:09

Aqueeb Qazi

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Thank you! Also here is a guide for app signing: https://developer.android.com/studio/publish/app-signing#:~:text=Generate%20an%20upload%20key%20and%20keystore,-If%20you%20don&text=In%20the%20menu%20bar%2C%20click,store%20path%2C%20click%20Create%20new. – Majd Harb Oct 31 '22 at 12:02

Mobin Ansar · Answer 3 · 2022-06-27T11:25:01.503

1

You need to add SHA Keys in firebase console, to get SHA KEY

Open Android Studio
Open Project
Reveal android folder
Right click "gradlew" file and select Open in Terminal
Go to the terminal view and paste: gradlew signingReport

You will find the SHA-1 fingerprint in the "Gradle Console"

Add this SHA-1 fingerprint in firebase console and test again

edited Jun 27 '22 at 11:25

answered Jun 27 '22 at 11:22

Mobin Ansar

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thanks but I already did this and still got nothing :') – Majd Harb Jun 27 '22 at 11:34
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Re download google-service.json and replace it in your android studio project? – Mobin Ansar Jun 27 '22 at 11:53

Firebase OTP working fine on debug apk but not release apk

3 Answers3