how to start to develop SIM card reader

[janet_smith2000]

good day,


I wish to develop a sim card reader/writer, wish able to backup the data inside the card, and restore it back to another sim card.


I wish to know how to start with.

as far as i know, Maxim has MAX1740, MAX1741 level shifter.
perhaps i will use PIC as controller. I don't know how to control the Sim card.

I guess Sim card is one of the smart card, and those circuit might be the same



Thanks.

 

[tcsa35]

Look this: hxxp://users.net.yu/~dejan/
especially "Gold & Silver Wafer Programmer"

Enjoy

 

[janet_smith2000]

Thanks tcsa35.

here are some questions more.

1. What's the relation between smart card and sim card?

2. There are quite a number of smart card reader from the web. Can I

use smart card reader to read sim card? I found one smart card reader IC from Atmel as well.

3. What is gold card / silver card? where can i get them? i couldn't

find it from microchip.com.

4. What uC is used in sim card? mine have "GEMPLUS" printed on it. Is

that a pic or avr?

5. Are the sim cards using same file system, regardless the phone

model and service provider?

6. What protocol and the filesystem of sim card?

 

[tcsa35]

Here are some answer for your questions: **broken link removed**

Enjoy

 

[throwaway18]

>"Gold & Silver Wafer Programmer"
Thats for cards containing a microchip technology pic processor, it is not for SIM cards.

>1. What's the relation between smart card and sim card?

A smart card is a card that is smart, that term is used to refer to payphone cards, chipa-and-pin credit cards, satellite TV cards, ecash cash etc. A sim card is a Subscriber Identity Module for a mobile telephone.

>What is gold card / silver card? where can i get them?
Google. They are mainly used for pirate satellite TV cards.

>What uC is used in sim card?
Sim cards are not microcontrollers, they are ASIC's.

>Are the sim cards using same file system, regardless the phone
>model and service provider?

GSM sim cards work in any GSM phone (network locks allowing).

 

[Dejanvkh]

as I know SIM cards make with PIC Microcontroller and EEPROM, see this tutorial for a way to make a GSM SIM card using PIC16f877A and 24c64 EEPROM..