Data binding problem

Hi!
I have some problems with data binding, I'm pretty sure that I have done everything like in tutorial but gui still don't change values. I tried to compile on newest stable Xamarin.Forms lib and newest pre-release. Can you say me what I'm doing wrong?
This is my cell in XAML:

<?xml version="1.0" encoding="utf-8" ?>
<ContentView xmlns="http://xamarin.com/schemas/2014/forms"
                       xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                       x:Class="App.SwitchCellXAML">

        <StackLayout Padding="20,0,0,0" HorizontalOptions="StartAndExpand" Orientation="Horizontal">
            <Image Source="Icon.png"/>
            <Label Text="{Binding name}" YAlign="Center"/>
            <Label Text="{Binding status}" YAlign="Center">
            </Label>

        </StackLayout>
</ContentView>

My class:

public class Device : INotifyPropertyChanged
 {
    public event PropertyChangedEventHandler PropertyChanged;
    /* There are some other lines */
    public string name { get; set; }
    private string _status;
        public string status
        {
            set
            {
                if (_status != value)
                {
                    _status = value;
                    OnPropertyChanged("status");
                }
            }
            get
            {
                return _status;
            }
        }
        protected void OnPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
                PropertyChanged(this,
                    new PropertyChangedEventArgs(propertyName));
        }
}

Creating ListView:

listView.ItemsSource = devices;
listView.ItemTemplate = new DataTemplate(typeof(SwitchCell));