Get BindingContext of cell in a ListView

I'm converting a C# layout to XAML. The layout displays a list of Contacts that each have an Id, a PhoneNumber, and a Name property. I have a method CallContact that accepts a Contact as a parameter. It fires off when the user taps a phone image that is in each cell (they access a details page by tapping elsewhere in the cell) The method displays a prompt like "Would you like to call <Name>?", so it needs both the Name and the PhoneNumber properties of the Contact object.

Previously, I had a C# file for my ViewCell that looked like this

C# ViewCell

public class ContactCell : ViewCell
{
    public ContactCell()
    {
        var lblName = new Label{Font = Font.SystemFontOfSize(NamedSize.Medium)};
        lblName.SetBinding(Label.TextProperty, "Name");

        var phoneImage = new Image
        {
            Source = "Images/phone.png"
        };

        var phoneImageTgr = new TapGestureRecognizer();
        phoneImageTgr.Tapped += (s, e) =>
        {
            var contact = BindingContext as Contact;
            if (contact != null)
                CallContact(contact);
        };

        phoneImage.GestureRecognizers.Add(phoneImageTgr);

        View = new StackLayout
        {
            HorizontalOptions = LayoutOptions.FillAndExpand,
            Orientation = StackOrientation.Horizontal,
            Children = { phoneImage, lblName }
        };
    }

    private void CallContact(Contact contact)
    {
    }
}

So I referenced the BindingContext of the cell to get the specific Contact. Is there anyway for me, from XAML, to reference the current BindingContext of the cell and pass it as a CommandParameter?

XAML

<StackLayout>
    <ListView ItemsSource="{Binding Contacts}" SelectedItem="{Binding SelectedItem}">
        <ListView.ItemTemplate>
            <DataTemplate>
                <ViewCell>
                    <StackLayout Orientation="Horizontal">
                        <Image Source="Images/phone.png">
                            <Image.GestureRecognizers>
                                <TapGestureRecognizer Command="{Binding CallContactCommand}" />
                            </Image.GestureRecognizers>
                        </Image>
                        <Label Font="Medium" Text="{Binding Name}" />
                    </StackLayout>
                </ViewCell>
            </DataTemplate>
        </ListView.ItemTemplate>
    </ListView>
</StackLayout>