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where to write on SIM ?


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Guest othman20001
Posted

HI,

I want to write a value on the Sim Card using SimWriteRecord, but I don't know where to write on it. I'm using eVC4 with emulator. Is there any documentation explaining the structure of the memory of the SIM, or a SIM manager program scaning emulator's SIM Card.

Thanks a lot,

Othman.

Guest nausea
Posted

This has all the specs of the SIM and the different memory addresses and what info is found at them.

http://www.scardsoft.com/documents/GSM/GSM1111.pdf

HI,

I want to write a value on the Sim Card using SimWriteRecord, but I don't know where to write on it. I'm using eVC4 with emulator. Is there any documentation explaining the structure of the memory of the SIM, or a SIM manager program scaning emulator's SIM Card.

Thanks a lot,

Othman.

<{POST_SNAPBACK}>

Guest othman20001
Posted

Thank you nausea. But this specification doesn't tells where to write something on the SIM, it only gives some reserved adresses based on GSM specifications. For example : I want to write a 128 bits key on the SIM, how to do this ?

Thanks again,

Othman.

Guest nausea
Posted

Well, if they had an area for anyone to store whatever they wanted they would indicate it in the specification. I haven't read the whole specs so I dont know. Maybe you should just hide it in the phonebook or as an SMS. If you're willing to, you can try writing to a random address and hope it doesnt screw up your card or get overridden :D

I would write it to one of these: the phonebook, SMS, barred dialling numbers, service dialling numbers, fixed dialling numbers.

I would probably hide it in the 'barred dialling numbers' and if I needed more memory I would use the Extensions. Extensions can be chained together for more memory.

If you find another way of doing it let me know.

Thank you nausea. But this specification doesn't tells where to write something on the SIM, it only gives some reserved adresses based on GSM specifications.  For example : I want to write a 128 bits key on the SIM, how to do this ?

Thanks again,

Othman.

<{POST_SNAPBACK}>

Guest Swampie
Posted
Thank you nausea. But this specification doesn't tells where to write something on the SIM, it only gives some reserved adresses based on GSM specifications.  For example : I want to write a 128 bits key on the SIM, how to do this ?

Thanks again,

Othman.

<{POST_SNAPBACK}>

AFAIK, once the SIM has been personalised, the only storage areas you can use are the normal things such as SMS, Phonebook etc. If you want to write an app which can make use of SIM storage, then the SIM Toolkit will probably do what you want, unfortunately you can't get custom SIM Toolkit apps onto Operator SIMS. You can get your own SIMS to do it, but then it won't make calls....

D

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