A SIM is a small chip card inside a mobile GSM phone that functions as a miniature computer. It identifies the user account to the network, handles authentication, and provides data storage for user data such as phone numbers and network information. It may also contain applications that run on the phone. A SIM-free phone comes without a SIM card and is unlocked. This allows you to use a variety of SIM cards without being locked down to one particular network, which is very useful if you plan to use your phone abroad where local SIM cards are available to purchase.

SIM stands for Subscribers Identity Module. It is a chip integrated on a thumb sized card chip which is normally slotted into the back of a GSM mobile handset. The SIM card contains the subscriber's details and the phone numbers the subscriber stores on their phones.

A small printed circuit board that must be inserted in a GSM-based mobile before the phone can be used. It contains customer details, security information,a personal directory of telephone numbers and text messages.

(Secure Identity Module) / SIM tray The smartcard, inserted in a mobile device with GSM service, that contains your GSM mobile account information. SIM cards are portable between GSM devices—your mobile subscriber information moves to whatever device houses the SIM. slider design & stretch screen

Single-Band SIP

Scientific Instrument Module

Subscriber Information Module - Credit card (or smaller) sized smart card (stored in the phone) accommodating a microprocessor that contains your unique ID, phone number, phone directory & text messages etc.

a card which contains your phone number and enables you to access Services.

Subscriber Identification Module. A plastic card, which is placed in the back of a mobile phone and allows you to store information on your phone.

The SIM card is, as the name would suggest, a proof of subscription to a specific network and, an information storage point for the details specific to the owner of the card. Thus the postage stamp sized card can be transferred between GSM phones and the user will be charged on the same tariff, have access to the same services and, retain one telephone number and the database of information they have stored.

Designed to be inserted into a mobile telephone, a SIM or "smart" card contains all subscriber-related data, such as phone numbers, service details, and memory for storing messages. With a SIM card, calls can be made from any valid mobile phone because the subscriber data--not the telephone's internal serial number--is used to make the call.

Subscriber Identification Module: the smart card necessary for the operation of GSM phones.

Subscriber Identity Module

The SIM is an essential component of a GSM mobile phone. It contains the identity of the subscriber and assures the authentication during the access into the network and provides data storage for other subscriber related information, such as a personal address books. With its functionality and capability to support further sophisticated identification services such as storage of digital signatures and other network access codes, it is the key security token for any GSM-Telephone.

The smart card used by al digital mobile phones.

A smart card for GSM systems holding the subscriber's ID number, security information and memory for a personal directory of numbers thus allowing him to call from any GSM device.

(Subscriber Identification Module) a removable plastic card found in GSM phones that stores pertinent information about a phone such as your phone number, account information, phone book, PIM data, etc.. The card can be plugged into any GSM compatible phone and the phone is instantly personalized to the user. SIMs come in two sizes: large (credit card size) and small (thumbnail size).

Subscriber Indentity Module. The smart card used in digital mobile phones which carries the user's identity for accessing their network and receiving calls. SIMs also store information such as a phone book and received SMS messages.

A removable chip that stores personal authentication data in your mobile device. The N-Gage cannot dial out without one.

Subscriber Identification Module Smart card used in a GSM mobile phone carrying all subscriber-related information

Single inline module. Same as SIP except with a connector edge instead of leads.

Synonymous with the "smart card" required by all mobile customers to operate their phone. Carries authentication, billing and other information about the individual subscriber, as well as address book and other personalised information.

See SIM card.

SIM stands for "Subscriber Identification Module"

A card inserted into a GSM/TDMA or GSM-only handset containing subscriber-related data. The card contains 18 digits for GSM markets and 20 digits for TDMA markets.