I found this issue has be reported and would not fix now. https://github.com/MicrosoftDocs/azure-docs/issues/49731 You could try the suggestion in this comment. It maybe helpful. https://github.com/MicrosoftDocs/azure-docs/issues/49731#issuecomment-596143179
Can't register or receive Notifications from Hub on iOS Device
Hi, I have setup a Azure Notification Hub in my Xamarin.Forms project. It's work fine on Android but it's not working on iOS.
I have following all the instructions but still something is missing or wrong... The RegisteredForRemoteNotifications method is never invoke when the app is launching.
But when i'm adding this line MSNotificationHub.Start(Constants.ListenConnectionString, Constants.NotificationHubName);
to FinishedLaunching method it's will invoke RegisteredForRemoteNotifications method but inside the hub instance i have create it've class handle issue
That's all the information i have for now, if you need more please just ask. I'll provide all i have to resolve this issue.
Thank you.