var phones =

db.Phones.Where(p=> p.Company.Name=="Samsung");

var phones = from p

in db.Phones

                where

p.CompanyId == 1

                select

p;

Phone myphone =

db.Phones.Find(3);

var phones =

db.Phones.Select(p => new

    {

        Name

= p.Name,

        Price

= p.Price,

        Company

= p.Company.Name

    });