Subscriber identity module "Simcard" redirects here. For the brand-name medication, see Simvastatin.This page has some issuesA typical SIM card (mini-SIM)A mini-SIM card next to its electrical contacts in a Nokia 6233A TracFone Wireless SIM card has no distinctive carrier markings and is only marked as a "SIM CARD"A subscriber identity module or subscriber identification module (SIM) is an integrated circuit that securely stores the international mobile subscriber identity (IMSI) and the related key used to identify and authenticate subscribers on mobiletelephony devices (such as mobile phonesand computers).A SIM circuit is embedded into a removable plastic card. This plastic card is called a "SIM card" and can be transferred between different mobile devices. A SIM card follows certain smart card standards.[1] SIM cards were first made the same size as a credit card (85.60 mm × 53.98 mm × 0.76 mm). The development of physically smaller mobile devices prompted the development of a smaller SIM card, the mini-SIM card. Mini-SIM cards have the same thickness as full-size cards, but their length and width are reduced to 25 mm × 15 mm.A SIM card contains its unique serial number (ICCID), international mobile subscriber identity (IMSI), security authentication and ciphering information, temporary information related to the local network, a list of the services the user has access to and two passwords: a personal identification number (PIN) for ordinary use and a personal unblocking code (PUK) for PIN unlocking. History The SIM was initially specified by theEuropean Telecommunications Standards Institute in the specification with the number TS 11.11. This specification describes the physical and logical behaviour of the SIM. With the development of UMTS the specification work was partially transferred to 3GPP. 3GPP is now responsible for the further development of applications like SIM (TS 51.011) and USIM (TS 31.102) and ETSI for the further development of the physical card UICC.The first SIM card was made in 1991 by Munich smart-card maker Giesecke & Devrient, who sold the first 300 SIM cards to the Finnish wireless network operatorRadiolinja.[2][3] Design SIM chip structure and packagingThere are three operating voltages for SIM cards: 5 V, 3 V and 1.8 V (ISO/IEC 7816-3 classes A, B and C, respectively). The operating voltage of the majority of SIM cards launched before 1998 was 5 V. SIM cards produced subsequently are compatible with 3 V and 5 V. Modern cards support 5 V, 3 V and 1.8 V.The microcontrollers used for SIM cards come in different configurations. The typical ROM size is between 64 KB and512 KB, typical RAM size is between 1 KBand 8 KB, and typical EEPROM size is between 16 KB and 512 KB. The ROM contains the operating system of the card and might contain applets where the EEPROM contains the so-called personalization, which consists of security keys, phone book, SMS settings, etc., and operating system patches.Modern SIM cards allow applications to be loaded when the SIM is in use by the subscriber. These applications communicate with the handset or a server using SIM application toolkit, which was initially specified by 3GPP in TS 11.14 (there is an identical ETSI specification with different numbering). ETSI and 3GPP maintain the SIM specifications; the main specifications are: ETSI TS 102 223, ETSI TS 102 241, ETSI TS 102 588, and ETSI TS 131 111. SIM toolkit applications were initially written in native code using proprietary APIs. In order to allow interoperability of the applications, Java Card was taken as the solution of choice by ETSI. Additional standards and specifications of interest are maintained by Global Platform. Data Formats Developments Usage in mobile phone standards SIM and carriers SIMware See also References External links ETSI Smart Card standards (102 221)GSM 11.11 – Specification of the Subscriber Identity Module – Mobile Equipment (SIM-ME) interface.GSM 11.14 – Specification of the SIM Application Toolkit for the Subscriber Identity Module – Mobile Equipment (SIM-ME) interfaceGSM 03.48 – Specification of the security mechanisms for SIM application toolkitGSM 03.48 Java API – API and realization of GSM 03.48 in JavaITU-T E.118 – The International Telecommunication Charge Card 2006 ITU-Tv t eMobile phonesGeneralFeatures GSM services History Operating system Security Telephony airplane mode Text messaging SMS MMS Tracking Web browsing HTML5 SoftwareAppsDevelopment Distribution Management Cloud computingCommerceBanking Marketing advertising campaigns Payments donating TicketingContentBlogging Email Gambling Gaming Health Instant messaging Learning Music News Search local Social address book CultureCharms Comics Dating Japanese mobile phone culture Novels Ringtones silent mode Txtspk WallpaperDevicesManufacturers Camera phone Feature phone SmartphoneForm factorsBar Flip Phablet Slider WatchSmartphonesAndroid device rooting iPhone iOS jailbreaking Open-source mobile phone Windows Phone deviceEnvironmentand healthBlackBerry thumb Electronic waste External power supply Phantom ringing Radiation and health RecyclingLawCarrier IQ Driving safety Legality of recording by civilians Photography and the law Telephone tapping Texting while driving Mobile phones in prisonNetworkingChannel capacity Frequencies Multi-band Network operators Roaming Signal SIM Standards comparison Tethering VoIP WAP XHTML-MPGenerations0G 1G 2G 3G adoption 4G 5GRead in another language
Posted on: Sun, 21 Jul 2013 08:16:57 +0000
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