SMART card / SIM Card
SMART Card
It is an electronic circuit which is used to provide information about its holder.
Subscriber Identity Module.
In case of Mobile SIM card it enables a mobile device to communicate over telecom network. It is available in different size depends on the slot size of a device.
Parts of SIM Card
Sim card Contains UICC “Universal Integrated Circuit Card”. It has following Units
- Processor
- RAM
- ROM
- EPROM
Functions of SIM Card
It stores the following information
- Identification.
- Authentication.
- Storage
ICCID Code
Integrated Circuit Card Identifier or ICCID
format of the ICCID is:
MMCC IINN NNNN NNNN NN C
MM = Industry Identifier
CC = Country Code
II= Issuer Identifier
N{12} = Account ID (“SIM number”)
C = Checksum calculated from the other 19 digits using the Luhn algorithm.
SIM codes
It store the following information
- Integrated Circuit Card Identifier or ICCID
- International Mobile Subscriber Identity or IMSI
- Authentication Key or KI
- Local Area Identity or LAI
- Personal Identification Number or PIN
- Personal unblocking code or PUK
- SMS
- Contacts
- Last dial number
IMSI Code
The IMSI is stored in SIM and is sent by the phone to the appropriate network. The IMSI is used to acquire the details of the mobile in the Home Location Register (HLR) or the Visitor Location Register (VLR).
MCC = MObile Country Code
MNC = Mobile Network Code
MSIN = Mobile Subscriber Identification Number
