Azure Mobile Apps v4.2.0 saw an update of all core platforms with the migration to .NET Standard. This means support now includes Android 6.0 (API level 23 or higher), iOS 10 or higher, UAP 10.0.1699.0 or higher and WPF (.NET Framework 4.6.1 & .NET Core 3.0 or higher).
Along with this, all dependencies were updated to their latest versions to aid compatibility with other libraries and the in-built authentication now uses Xamarin.Essentials.
You can learn more about Azure Mobile Apps here:
https://azure.microsoft.com/en-us/services/app-service/mobile/ and https://github.com/azure/azure-mobile-apps-net-client.
Download version 4.2.0 here: https://www.nuget.org/packages/Microsoft.Azure.Mobile.Client/4.2.0
Or read the documentation here: