Removable User Identity Module ( R-UIM , usually pronounced as "R-yuim") is a card developed for cdmaOne / CDMA2000 ("CDMA") 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 (GSM) application, so it can work on both networks. It is physically compatible with GSM SIMs and can fit into existing GSM phones as it is an extension of the GSM 11.11 standard.
4-507: This interface brings one of the main advantages of GSM to CDMA network phones. By having a removable identity card, CDMA users can change phones while keeping their phone numbers by simply swapping the cards. This simplifies many situations such as phone upgrades, phone replacements due to damage, or using the same phone on a different provider's CDMA network. The R-UIM card has been superseded by CSIM on UICC . This technique allows all three applications (SIM, CSIM, and USIM ) to coexist on
8-618: A single smartcard, allowing the card to be used in virtually any phone worldwide that supports smart cards. The CSIM application, a port of R-UIM functionality to the UICC, is defined in standard. This form of card is widely used in China under the CDMA service of China Telecom (The CDMA service of China Telecom was acquired from China Unicom in 2008). However, it is also used elsewhere such as India , Indonesia , Japan , Taiwan , Thailand , and
12-689: The US . This article related to telecommunications is a stub . You can help Misplaced Pages by expanding it . CSIM A CDMA subscriber identity module ( CSIM ) is an application to support CDMA2000 phones that runs on a UICC , with a file structure derived from the R-UIM card. By porting the application to the UICC (Universal Integrated Circuit Card), a card with CSIM, SIM , and USIM can operate with all major cellular technologies worldwide. The CSIM application allows users to change phones by simply removing
16-474: The smart card from one mobile phone and inserting it into another mobile phone or broadband telephony device supporting the CDMA2000 radio interface. The CSIM application contains a file system with a number of parameters needed to operate on cdmaOne / CDMA2000 ("CDMA") networks. Each parameter, or a group of related parameters, is specified with a unique identifier with an implicit or explicit length, and
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