Overview[1]#

Universal Integrated Circuit Card (UICC) is the Smart Card used in Mobile Devices in GSM and UMTS networks.

Commonly known as a SIM card, although it is technically a SIM only when used on GSM networks and the USIM works on UMTS networks.

Any modern mobile device nowadays has an Universal Integrated Circuit Card of some form or another.

Universal Integrated Circuit Card are actually Smart Cards that can host applications, and as such are one form of a Secure Element. However, since the Universal Integrated Circuit Card is only connected to the baseband processor, which is separate from the application processor that runs the main device Operating System, they cannot be accessed directly from Android. Typically, the Universal Integrated Circuit Card must be accessed by the OWNER of the Universal Integrated Circuit Card which is the Mobile Network Operators or in IOS, Apple

All communication to the Universal Integrated Circuit Card MUST to go through the Radio Interface Layer (RIL) which is essentially a proprietary IPC interface to the baseband processor.

Communication to the UICC Secure Element is carried out using special extended AT commands (AT+CCHO, AT+CCHC, AT+CGLA as defined by 3GPP TS 27.007).

Universal Integrated Circuit Card ensures the integrity and security of all kinds of personal data, and it typically holds a few hundred kilobytes.

With the advent of more services, the storage space will need to be larger.

In a GSM network, the UICC contains a SIM application and in a UMTS network it is the USIM application.

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« This page (revision-7) was last changed on 15-Aug-2016 13:37 by jim