Thank you for your response. Based on your response, I understand that even though ServiceWorker can be enabled with app-bound domains (max for 10 domains), its not recommended. Please correct me if I am wrong. I will file enhancement request on adding ServiceWorker support in iOS WKWebVIew. Another way to enable ServiceWorker is by making app a default browser, but that is not an option for our app. https://developer.apple.com/documentation/xcode/preparing-your-app-to-be-the-default-browser#Use-default-browser-capabilities

Submitted the feedback https://feedbackassistant.apple.com/feedback/16511818

I didn't get response on official feature request yet https://feedbackassistant.apple.com/feedback/16511818