Example of how to get informations from device in Xamarin.Forms applications - http://julianocustodio.com/DeviceInfo

MainPage.xaml.cs

using Plugin.DeviceInfo;
using Xamarin.Forms;

namespace DemoDeviceInfo
{
	public partial class MainPage : ContentPage
	{
		public MainPage()
		{
			InitializeComponent();

		        DeviceName.Text = "DeviceName: " + CrossDeviceInfo.Current.DeviceName;
		        Id.Text = "Id: " + CrossDeviceInfo.Current.Id;
		        Manufacturer.Text = "Manufacturer: " + CrossDeviceInfo.Current.Manufacturer;
		        Model.Text = "Model: " + CrossDeviceInfo.Current.Model;
                        Version.Text = "Version: " + CrossDeviceInfo.Current.Version;
		        Platform.Text = "Platform: " + CrossDeviceInfo.Current.Platform.ToString();

                }
	}
}