Don't bother.
Was lied to about being able to cancel my contract within 30 days. I tried to cancel the day later, for a variety of reasons and was told I couldn't! Having now read reviews of carphone warehouse I see that this is common practice.
I was told I could apply my NHS discount with vodaphone once I had a contract; also lies. If you sign up with carphone warehouse you are exempt from any discounts the provider may offer. Again, I realised this too is common practice after reading reviews recently of other customers' experiences.
I was told that reception at my address was the highest it could possibly be. I have one bar/dot at home and cannot make phone calls easily. Horrible service, happy to lie to get your money then not interested.
The Carphone Warehouse offers a wide selection of mobile phones and related accessories. They also offer impartial advice on suitable phones and available mobile networks.