A CDMA Subscriber Identity Module (CSIM) is an application that runs on a removable smart card

Smart card

A smart card, chip card, or integrated circuit card , is any pocket-sized card with embedded integrated circuits. A smart card or microprocessor cards contain volatile memory and microprocessor components. The card is made of plastic, generally polyvinyl chloride, but sometimes acrylonitrile...

. Originally, a subset of the CSIM application ran on an R-UIM

R-UIM

Removable User Identity Module is a card developed for cdmaOne/CDMA2000 handsets that extends the GSM SIM card to CDMA phones and networks. To work in CDMA networks, the R-UIM contains an early version of the CSIM application. The card also contains SIM application, so it can work on both...

 card. The application has been ported to the UICC

UICC

The UICC is the smart card used in mobile terminals in GSM and UMTS networks. The UICC ensures the integrity and security of all kinds of personal data, and it typically holds a few hundred kilobytes...

 (Universal Integrated Circuit Card), so that a card with CSIM, SIM

Subscriber Identity Module

A subscriber identity module or subscriber identification module is an integrated circuit that securely stores the International Mobile Subscriber Identity and the related key used to identify and authenticate subscriber on mobile telephony devices .A SIM is held on a removable SIM card, which...

, and USIM can operate with all major cellular technologies worldwide. The CSIM application allows users to change phones by simply removing the smart card from one mobile phone and inserting it into another mobile phone or broadband telephony device supporting this interface

(U)SIM Interface

The SIM interface is the connecting point of the mobile phone and the UICC with its SIM or USIM application.- Standardisation of the SIM Interface :...

.

CSIM Application File System

The CSIM application contains a file system with a number of parameters needed to operate on cdmaOne/CDMA2000

CDMA2000

CDMA2000 is a family of 3G mobile technology standards, which use CDMA channel access, to send voice, data, and signaling data between mobile phones and cell sites. The set of standards includes: CDMA2000 1X, CDMA2000 EV-DO Rev. 0, CDMA2000 EV-DO Rev. A, and CDMA2000 EV-DO Rev. B...

 ("CDMA") networks. Each parameter, or a group of related parameters, is specified with a unique identifier with an implicit or explicit length, and is considered a separate Elementary File (EF). The following examples are taken from the 3GPP2 specification.

• Encryption keys, provisioned by the operator.
• Phone Number.
• Call Counts.
• Short Message Service Parameters.
• Received Short Messages (255 bytes maximum per message).
• IMSI (international mobile subscriber identifier).
• TMSI (temporary mobile surbscriber identifier, for position security).
• UIMID
  UIMID
  A UIMID is a 32-bit Electronic Serial Number stored in a R-UIM or CSIM used for TDMA or CDMA2000 phones . It is given a different name to avoid confusion with the hardware ESN stored in the phone. In all known systems the UIMID displaces the ESN in signaling...
  
   (hardware identifier). Will be a pseudo (hashed) value if EUIMID
  EUIMID
  EUIMID is a unique identifier for an R-UIM or CSIM card in CDMA2000 cellular systems that replaces the older UIMID identifier....
  
   is in use.
• EUIMID
  EUIMID
  EUIMID is a unique identifier for an R-UIM or CSIM card in CDMA2000 cellular systems that replaces the older UIMID identifier....
  
  . Either short form (based on MEID
  MEID
  A mobile equipment identifier is a globally unique number identifying a physical piece of CDMA mobile station equipment. The number format is defined by the but in practical terms it can be seen as an IMEI but with hexadecimal digits....
  
  ) or long form (based on ICCID).
• ICCID. Present even if it is not used as EUIMID
  EUIMID
  EUIMID is a unique identifier for an R-UIM or CSIM card in CDMA2000 cellular systems that replaces the older UIMID identifier....
  
  .
• MEID
  MEID
  A mobile equipment identifier is a globally unique number identifying a physical piece of CDMA mobile station equipment. The number format is defined by the but in practical terms it can be seen as an IMEI but with hexadecimal digits....
  
   (hardware identifier).
• Analog (AMPS
  Advanced Mobile Phone System
  Advanced Mobile Phone System was an analog mobile phone system standard developed by Bell Labs, and officially introduced in the Americas in 1983, Israel in 1986, and Australia in 1987. It was the primary analog mobile phone system in North America through the 1980s and into the 2000s...
  
  ) operational parameters.
• CDMA2000
  CDMA2000
  CDMA2000 is a family of 3G mobile technology standards, which use CDMA channel access, to send voice, data, and signaling data between mobile phones and cell sites. The set of standards includes: CDMA2000 1X, CDMA2000 EV-DO Rev. 0, CDMA2000 EV-DO Rev. A, and CDMA2000 EV-DO Rev. B...
  
   home identifiers, such as SID
  System Identification Number
  A System Identification Number is broadcast by one or more Base Stations to identify a cellular network in a certain area . It is globally unique within AMPS, TDMA or CDMA networks...
  
   and NID.
• CDMA2000
  CDMA2000
  CDMA2000 is a family of 3G mobile technology standards, which use CDMA channel access, to send voice, data, and signaling data between mobile phones and cell sites. The set of standards includes: CDMA2000 1X, CDMA2000 EV-DO Rev. 0, CDMA2000 EV-DO Rev. A, and CDMA2000 EV-DO Rev. B...
  
   zone-based registration parameters, telling the handset to register when it changes to a new operator-defined zone (SID
  System Identification Number
  A System Identification Number is broadcast by one or more Base Stations to identify a cellular network in a certain area . It is globally unique within AMPS, TDMA or CDMA networks...
  
  /NID).
• CDMA2000
  CDMA2000
  CDMA2000 is a family of 3G mobile technology standards, which use CDMA channel access, to send voice, data, and signaling data between mobile phones and cell sites. The set of standards includes: CDMA2000 1X, CDMA2000 EV-DO Rev. 0, CDMA2000 EV-DO Rev. A, and CDMA2000 EV-DO Rev. B...
  
   distance-based registration parameters, telling the handset to register when it travels a certain distance (each CDMA2000
  CDMA2000
  CDMA2000 is a family of 3G mobile technology standards, which use CDMA channel access, to send voice, data, and signaling data between mobile phones and cell sites. The set of standards includes: CDMA2000 1X, CDMA2000 EV-DO Rev. 0, CDMA2000 EV-DO Rev. A, and CDMA2000 EV-DO Rev. B...
  
  transmitter emits its GPS location).
• Random parameters (slot cycle index) to use during CSMA access probes.
• List of services available. If a service is not indicated as available in the CSIM, the mobile equipment shall not select this service. Examples include "Call Control", "SMS", "BCMCS Broadcast", "IP Location", etc. If a service is not in this table, the handset will not provide the service.
• Multimode System Selection (MMSS) parameters.