iOS11 causing CORS Issues in all mobile browsers

Question

We were testing our website on iOS devices with iOS11, and noticed that it was breaking, as the browser would not accept responses from our API. Using the remote debugger, w

Answer 1

iOS 11 has introduced some new tracking protection which block some sites/URL

You can disable this in Settings -> Safari -> Prevent Cross-Site Tracking.

Maybe that is your problem ?

I have the same problem, this works - but I would like a way about without our users have to do this.

source: https://www.macrumors.com/how-to/safari-ios-11-tracking-prevention/