we have checked the autofill functionality for android. so we needed the 11 char hash key to be added into the OTP SMS body. how to add that into firebase phone auth OTP message.
we referred to this documentation:
https://developers.google.com/identity/sms-retriever/overview
As of 2nd July 2021:
This is expected behavior - your application's name is long enough that it crowds out the application hash from the SMS.
Shortening the name of the app is the only fix for now
Read More https://github.com/firebase/firebase-android-sdk/issues/2688#issuecomment-860940110
