In article <VA2se.59256$6g3.53295@tornado.texas.rr.com>,
Sharp <Sharpone43@hotmail.com> wrote:
>
>Do SIM cards contain the provider software that is on the phone?
The
SIM toolkit can be used to run provider-specific routines from the
SIM
card itself. This is sometimes transparent (for instance, after the
AT&T acquision, Cingular added ENS [Enhanced Network Selection] code to
both its SIMs and several phones in order to better control the selection
and display of tower identity.
Applications that are available for user interaction are not commonly
implemented by US carriers, but they are the norm in many other countries.
Numerous carriers have additional menus that are stored and implemented
FROM THE
SIM CARD. These may include access to routines that program
GPRS
settings to the phone, store and manage additional phone books, allow
management of credits on prepaid phones, link banking functions to cell
phones, manage callback arrangements for long-distance roaming services,
and the like.
>For example, if you had a Nokia 6010 and put a Tmobile SIM card in it would
>you get Tmobile specific options like Tzones? Likewise, if you put a
>Cingular SIM card in would you get Cingular specific options like Media Net?
Cingular and TMobile do not impement such functions in their
SIM cards.
They could, however, if they wanted to ... perhaps, say add a function to
the
SIM meny which would download
GPRS and
WAP settings in order to enable
your phone to talk to the respective carrier's data network without
manually entering settings, or having them transmitted via a web site
request.