Carphone w and sonyericsson contract problems. in Telecoms - mobile or fixed Posted April 17, 2010 If your within 28 days you should be able to exchange it for a handset that is available on the same tariff that you are on. You could certainly argue the point that its false advertising but not sure how far that would get you with Carphone Warehouse as I doubt that sony ericsson have a different box which doesnt have the you tube ready bit on it, and they can only stock what they are sent. But you would think that it would give you some leverage in regards to getting a different phone if you were going to exchange it. Good luck with getting it sorted, I know how difficult the stores can make it at times.