On Mon, 30 Oct 2006 14:49:34 +1100, Simon Templar <usenet@vk3xem.net>
wrote:

>Unless it has an OFF LINE or FLIGHT mode the phone will continue to
>attempt to connect to a network, therefore TRANSMIT.

If the handset has a sim card in it, it will transmit for a very brief
time in an attempt to register. If refused because the sim ins no
longer active, it will stop trying. It will possibly try each of the
other available networks, but only once each,.

>Even if an
>inactive SIM is refused access to it's original network it will continue
>trying to register!

That's not correct, as far as I know. It would only retry if it had
failed to get a response from the network. Once the network has said
"No" it won't try again.

So we are talking about a few milliseconds shortly after it is
switched on. After that it won't transmit at all, unless someone tried
to make an emergency call, when it would try each network once more
before failing and giving up.

--

Iain
the out-of-date hairydog guide to mobile phones
http://www.hairydog.co.uk/cell1.html
Browse now while stocks last!