After many efforts i couldn't find a solution.
The problem is in details:
I am using google OTP- Firebase Phone number Authentication service to my app at the first Page, my environment is expo 48SDKs react-native which contain two parts which are IOS and Android app, using emulators for each one, OTP Firebase works fine on both - IOS and Android emulators and in debug modes
After finish developing the app and being ready to be published:
Phase One:
First i begin to publish it on Apple App-store by Xcode and everything going fine but when app shows up on App store and download it - Suddenly OTP Phone auth not working.
So far founds solutions to IOS app by using few things ( credentials on iOS domain firebase project & google-service.plist which included it on Xcode & app-Attest on App-Check on Google Firebase Project Overview) and rebuild and publish again new version, finally everything work's very good and smooth.
Phase Two:
Begin to publish the app on Google Play-store and makes these steps ( credentials - SHA-1 & 265 included it on Android domain on firebase project Overview & google-service.JSON which included it on Android Studio in app folder & Play integrity on App-Check on Google Firebase Project and Integrity API Enabled ), and app shows up on google play store - Suddenly sms auth firebase not working.
Note: before integrity API using the SaftyNet API - app works fine but google services stop this API this month.
Important to know: the code works fine cuz it work on IOS app very good and on android debug mode and emulators
On Android app which downloaded it from google-play ( release mode ) still not working and i don't know what to do, makes a lot of searching and try to modifying the code but nothing.
takes a lot of tutorials and rebuilds succeeded and did add new implementations on Build.Gradle & tries very much things still nothing.
Note i am working with:
React-native ~18 and expo 48 sdks.
New Mac System , buy before two month.
the last Android Studio version.
the last Xcode version.
Help please and thank you.
