I don't think this is a iOS ver issue. I believe it's a hardware issue. As I recall the Qualcomm chip in the iPhone 4s is the culprit. I recall the iPhone 4 and before was able to turn off 3G data.
--- In apple-iphone@yahoogroups.com, Richard Raiff <richraiff@...> wrote:
>
> settings/general/network will let you turn off cellular data without
> turning off the phone function. I do not think that you can switch to a
> lower speed data service manually. Data is either on or off.
>
> *Rich Raiff*
>
>
>
> On Sun, Aug 19, 2012 at 12:53 PM, Jim Saklad <jimdoc@...> wrote:
>
> > **
> >
> >
> > > Yes, you can turn off just 3G or Mobile Data altogether.
> >
> > Well, Otto, I certainly remember that in the past, but in the current
> > version of iOS, I don't seem to be able to locate such a setting on the
> > iPhone or on the iPad.
> >
> > Where is it in iOS 5.1.1 ?
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>
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