run
January 13, 2020, 11:23am
1
I have a setup with BC-66 where on all (tested) brands of sims it works fine, except one where it returns +QCCID: 00000000000000000000
OK
When I call AT+QCCID.
If the sim was broken I would expect an error instead of an OK.
I receive a cpin ready before I call AT+QCCID
Have anyone else seen this happen?
Hi Run
AT + CIMI queries whether the SIM card IMSI number can be read?
If it is a test SIM card, this is possible.
There is no problem with the SIM card in the actual network.
run
January 20, 2020, 8:55am
3
So it might actually be working perfectly even if the ICCID and IMSI id are reported as 000’s ?
Hi Run
It is possible for the SIM card of the test instrument to be written “0000”.
Can be used normally.
run
January 20, 2020, 10:10am
5
Just curious, how would the network know how to recognize the device/sim if the ICCID / IMSI is set to 0’s.
Abner-Q
January 20, 2020, 10:35am
6
Hi Run
The test SIM card is connected to the instrument, not an Authentication check under the actual network.
run
January 20, 2020, 11:25am
7
The Sims in question are actual MMF2 sims delivered from a TelCo.
Abner-Q
January 20, 2020, 11:35am
8
Hi Run
Do you have other models?
You can read the SIM card by AT + QCCID on other modules.
run
January 20, 2020, 11:38am
9
We have MFF2 sims from 2 other TelCos that work perfectly when reading out the ICCID.
Abner-Q
January 20, 2020, 11:38am
10
Hi Run
If the CCID number is “0000” on other modules, you need to confirm with TelCo.
Abner-Q
January 20, 2020, 11:39am
11
Hi Run
You do not replace other SIM cards, you replace other models of modules.
run
January 20, 2020, 11:39am
12
I have 5 of the same type Sim from this TelCo, I’ll reach out to the to verify if they intend to have ICCID with 0’s, but I think it would be strange if that was the case.
Abner-Q
January 20, 2020, 11:40am
13
Hi Run
If it is a SIM card problem, the CCID read out when you replace the module of another model is also “0000”.
run
January 20, 2020, 11:42am
14
I get 0’s on all 5 sim cards… I guess there is a production issue, with the sims then.
Abner-Q
January 20, 2020, 11:45am
15
Hi Run
OK, wait for your good news.