Xamarin: error CS0103: The name ‘PhoneCallManager’ does not exist in the current context

 Trying to follow the Tutorial mentioned :  XAML in Xamarin.Forms (XAM120) and getting this error
PhonewordPhonewordPhoneword.UWPPhoneDialer.UWP.cs(21,17,21,33): error CS0103: The name ‘PhoneCallManager’ does not exist in the current context

Code Snippet:

public Task DialAsync(string number)
        {
            if (ApiInformation.IsApiContractPresent(“Windows.ApplicationModel.Calls.CallsPhoneContract”, 1, 0))
            {
                Windows.ApplicationModel.Calls.PhoneCallManager.ShowPhoneCallUI(number, “Phoneword”);
                return Task.FromResult(true);
            }
            return Task.FromResult(false);
        }

Solution:
   Go to Visual Studio Phoneword.UWP Project
   Expand the References and Delete the Windows Reference which is pointing to 8.1 binaries
Add Reference -> Universal Windows -> Extensions
           Add Windows Mobile Extensions for the UWP

  Replace if condition with this or appropriate version:
if(ApiInformation.IsApiContractPresent(“Windows.Foundation.UniversalApiContract”,2,0))

Thanks
Sudheer