public GSM(string model, string manifacturer, string owner, int? price, Battery battery, Display display)
{
this.model = model;
this.manifacturer = manifacturer;
this.owner = owner;
this.price = price;
this.battery = battery;
this.display = display;
}
public GSM(string model, string manufacturer, int price , string owner , Battery battery, Display display)
{
this.Model = model;
this.Manufacturer = manufacturer;
this.Price = price;
this.Owner = owner;
this.Battery = battery;
this.Display = display;
}
public GSM(string model, string manufacturer, decimal price, string owner, Display display, Battery battery)
{
this.model = model;
this.manufacturer = manufacturer;
this.price = price;
this.owner = owner;
this.display = display;
this.battery = battery;
CallHistory = new List<Call>();
}
