GSM/GPRS at same time? (was: Re: does dialer supports multiple calls at a time??)

Mikko J Rauhala mjrauhal at
Tue Sep 18 15:58:54 CEST 2007

On ti, 2007-09-18 at 04:55 -0400, Steve wrote:
> I have a GPRS question, the wiki says (on the iphone comparison page)
> that it is class 12/cs4.  That describes speed and number of channels.
> There's a third classification, A-C, which indicates whether it is
> capable of utilizing both voice/SMS and GPRS at the same time.  Is the
> hardware capable of doing both at once?

It's B, can't do both simultaneously.

> If it can't do both at once, does that mean that
> incoming voice calls will busy out?

No, Class B devices do still get the signaling and can suspend the GPRS
connection for the duration of the voice call.

> Since it was on the iphone page, does anyone know if the iphone can do
> both voice and data at the same time?

Dunno, likely not.

Mikko J Rauhala <mjrauhal at>
University of Helsinki

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