Hi, this is such a simple question I am embarrassed to ask! I have at last purchased an iphone and can do the odd thing. However, when I am playing with it I have sometimes dialled a number by mistake. I then panic and just can't cancel the call. What is the easiest way to end a call please? I got a three vol manual from the R.N.I.B. so will eventually start reading it and perhaps pick up the odd thing. Cheers, Irene.