V3xx question

Anybody know if I can somehow transfer the account information from an old
blue AT&T SIM card to a new AT&T 3G SIM card? I know how to transfer phone
entries. That is not the issue, but rather how to make it so a newer 3G SIM
card is holding the information for when I insert it into a phone.

Also, is there any advantages what so ever to using a newer SIM card as
opposed to an older one? I ask this because I have an older AT&T SIM and I
am getting a new unlocked RAZR V3xx phone, and if this will help somehow,
then I will see if I can switch cards.

Thanks for the help.

Rolling Rock 33 <m.midnightranger@verizon.net> wrote:
> Anybody know if I can somehow transfer the account information from an old

Didn't you just ask this question under a different subject heading?

--
Clarence A Dold - Hidden Valley Lake, CA, USA GPS: 38.8,-122.5

But what about the information that is embedded on the SIM so that AT&T
knows that it is your account and your phone number when you insert it in a
phone? Can this information be transferred over from one type of SIM card to
another? I guess that the old blue AT&T cards are 16bit and the new ones are
64bit. I have an orange Cingular 32bit, but I don't know if this will work
either.

On 2007-09-07, Rolling Rock 33 <m.midnightranger@verizon.net> wrote:
> But what about the information that is embedded on the SIM so that AT&T
> knows that it is your account and your phone number when you insert it in a
> phone? Can this information be transferred over from one type of SIM card to
> another?

Probably not, and certainly not without special equipment. SIM cards
are designed to keep that information secret to prevent cloning. If
you want to use a 3G SIM you need to get AT&T to register the new SIM
with your account; you can't make the new SIM look like the old SIM.

> I guess that the old blue AT&T cards are 16bit and the new ones are
> 64bit. I have an orange Cingular 32bit, but I don't know if this will work
> either.

I think your old SIM cards should work in the V3xx if the phone is
unlocked, they just won't let you use the 3G HSDPA features of the
phone. You need a 3G SIM for the latter to work. If what you are
trying to do is get the 3G features to work without talking to AT&T,
note that this won't work even if you could copy "account" information
over from your old SIM (which you can't). The old SIM is missing the
"account" information needed for the 3G service, which is why you can't
get that service using the old SIM and why copying that same information
to a new SIM wouldn't help.

If you want to use a 3G SIM you need to talk to AT&T, and you'll be
giving up the old SIM on the account.

Dennis Ferguson