On iOS5...

[Simon]

How do you turn off 3G? 

[Steve]

You can't on the 4S.There has been some discussion elsewhere I'll see if I can find it. It is still possible on the 3GS with IOS5 , the only option is to turn data off


https://discussions.apple.com/thread/3390012

[Lance]

Its still possible on the 4 as well, settings > general > network

[Steve]

Some claims have been made to a different hardware configuration in the 4S. I'm tending to charge the phone nightly so the lack of the power save to 2G has not been an issue for me!

[Simon]

I wonder why it's not possible on the 4S?  Something to do with the twin antennae, perhaps?  It's slightly irritating, because in a patchy 3G area, switching off 3G saves battery by stopping it from continually searching for a 3G signal (or, it used to), and it also enables web access via 2G, when sometimes a poor 3G signal will make it stall.

[Steve]

I agree Simon,

[Rik]

I wonder why it's not possible on the 4S?

Has your screen improved, btw, Simon?

[Simon]

It looks like it, yes, unless I've just got used to it.  Oddly enough, it did actually seem better after the upgrade last night, but I think that was probably psychological, as I don't think it could have been affected, other than, perhaps, by a tweak to the brightness setting.  That said, there must be some sort of configuration for colour temperature within the OS, so perhaps they have done something, without actually admitting a fault?  Or have I got too used to BT? 

[Rik]

 

Probably by now.