I got a call saying I was due an upgrade. I said I was happy with the phone but that a bigger screen would be good and that I felt the tariff was now too high. I was told instantly that I could have a bigger screen with a much reduced tariff rate which I was very happy with. I asked what was the difference then between the phone I had and the new one - apart from the bigger screen - and was told there was none! Strange but true. When the phone arrived it had exactly the same screen size and looked exactly the same as the one I had. I intend to send it back.