Re: AT!ICCID before PIN-entry fails

[Andrew Bird <ajb spheresystems co uk>]

On Tuesday 16 July 2013 08:53:24 Andreas Schigold wrote:

> -> ATZ
<- ATZ
<- OK

-> AT!ICCID?
<- AT!ICCID?
<- ERROR

-> AT!SPN?
<-

> AT!SPN?
<- +CME ERROR: unknown

-> AT+CPIN=****
<- AT+CPIN=****
<- OK

->

> AT!ICCID?
<- AT!ICCID?
<- !ICCID: 89490200000863940628
<-
<- OK

->

> AT!SPN?
<- AT!SPN?
<- !SPN: 0, "Telekom.de"
<-
<- OK

Is this a bug or a

> security topic? Does know anyone a trick or another way to find out a

> SIM-changing?

 

Hi Andreas,

Have you tried reading the files directly from the SIM using AT+CRSM ? I believe the SIM should have the ICC file available before unlock, probably for the exact reason you need it, so it may circumvent the vendor's firmware logic that prevents you from reading with AT!ICCID

Hope it helps,
Andrew