I read a short article on exactly that recently. Voice is becoming less and less used.
--- In iPad@yahoogroups.com, Jim Saklad <jimdoc@...> wrote:
>
> > My one hiccup with the iPhone was the inflexibility to actually control phone features like call block. When iPhone allows true blocking, versus setting up unwanted numbers with a quiet (silent) ringtone, I might come back.
>
> I don't know how common my situation is, but of all the many functions an iPhone can perform, the LEAST-used one is talking to other people by voice.
>
> Most identified limitations of the iPhone as a voice telephone are therefore simply irrelevant to me. I know some others have also said this, but I don't know how wide-spread it is.
>
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