GetAccountsAsync is returning o accounts and AcquireTokenSilent is not returning token.

[kiranbasvaraj]

We have two Xamarin Forms projects example App1 and App2.
1.In App1 a user is logged in using some@mail.id.
2.In App2 we are implementing single sign-on(SSO) and we are using same ClientId,Keychain,AuthoritySignIn,RedriectURL,Extraparm in PublicClientApplicationBuilder builder method which were used in App1 aslo.
Issue: in App 2 GetAccountsAsync is returning o accounts and AcquireTokenSilent is not returning token.

Expected behavior: in App 2 GetAccountsAsync should return the account that was signed in App1 and AcquireTokenSilent should return the token.

NOTE:
In the IOS app, this is working as expected in the simulator but failing in a real physical device
In android, both are not working.