public class Person {

    public int Age { get; set; }

    public string Address { get; set; }

    public Name Name { get; set; }

    public List<string> Phone { get; set; } = new List<string>();

    public Person Clone() {

        var person = new Person();

        person.Age = this.Age;

        person.Address = this.Address;

        person.Name = this.Name;

        var phone = new List<string>();

        foreach (var item in this.Phone)

        {

            phone.Add(item);

        }

        person.Phone = phone;

         return person;

    }

}