@Sharma, Ritika Thanks for asking question!
The chrome for iOS is already supported, starting with SDK version 1.13.0-beta.4 as mentioned here Communication/releasenotes/acs-javascript-calling-library-release-notes.md at master · Azure/Communication (github.com).
Also you can see the browser supportability matrix in our documentation Communication/releasenotes/acs-javascript-calling-library-release-notes.md at master · Azure/Communication (github.com)
Please make sure you are using the latest SDK version (Latest : 1.25.1 @azure/communication-calling - npm (npmjs.com)).
Hope this helps.