On 9/4/06, Joe Brandt <vzd1s11k@verizon.net> wrote:
>
> For the rest of you non cell phone using people.
>
> Electronic Serial Number (ESN) - The unique identification number embedded
> in
> a wireless phone by the manufacturer. Each time a call is placed, the ESN
> is
> automatically transmitted to the base station so the wireless carrier's
> mobile switching office can check the call's validity. The ESN cannot
> easily
> be altered in the field. The ESN differs from the mobile identification
> number, which is the wireless carrier's identifier for a phone in the
> network. MINs and ESNs can be electronically checked to help prevent
> fraud.
>
> Thanks Logan I learned something.
Joe,
A. The ESN from a hackers point of view is very easy to change. Example
would be I can change the ESN of any CDMA except Nokia CDMA phones (
requires a separate program that I dont have. ) As all CDMA phones except
Nokia's use Qualcomms CDMA chipset. Which means all cdma phones can be
altered with QPST (Qualcomm Phone Service Tools) *Motorollas while using
the Qualcomm chipset also have a 2nd locking chip and hence have a modified
version of QPST calle MPST.
B. ESN is not on all phone just CDMA Phones ( Verizion, Sprint, Alltel, US
Celluar, Western Wireless, Celluar One *some markets)
C. GSM phones (Tmobile, Cingular/ATT, Suncom, CelluarOne *some markets)
use IMEI number plus a sim card for authenication. On CDMA they authenicate
by the ESN, but on GSM it is the sim card that is the big security threat.
The IMEI number is useful though as if the phone is stolen the carrier will
put it in a national black list and keep it from registering on there
network with any sim card.
-- > Joe Brandt > 100% Microsoft Free and Loving it!! > ----------------------------------------------------------------------- > This list is provided as an unmoderated internet service by Networked > Knowledge Systems (NKS). Views and opinions expressed in messages > posted are those of the author and do not necessarily reflect the > official policy or position of NKS or any of its employees. >----------------------------------------------------------------------- This list is provided as an unmoderated internet service by Networked Knowledge Systems (NKS). Views and opinions expressed in messages posted are those of the author and do not necessarily reflect the official policy or position of NKS or any of its employees.
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