SIM Card (Subscriber Identity Module)

The Subscriber Identity Module (SIM) smart card contains user account information. Any GSM phone becomes immediately programmed after plugging in the SIM card, thus allowing GSM phones to be easily rented or borrowed. SIM cards can be programmed to display custom menus for personalized services.

It is also possible to buy dual SIM covers for certain phones. These dual SIM covers can provide many advantages. For example you could use two networks on one phone, have one contract and one pay as you go account on the same phone, add a SIM card for use in another country or even have a separate number for business and another for personal use.

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