SIM Card - Mobile's heart

Dec 25, 2007 | Tag: Mobile service

How many of your friends have a cell phone? All of them? Right, mobile phones have become necessary for modern people to stay in touch all the time. They will keep you connected with your relatives, friends, family, business associates, customers and clients irrespective of distance. You can talk to anybody regardless of his location whether he lives in the same city or a different country. But what drives all those mobile phone out there? The heart of a mobile phone is the SIM card. Without a SIM card the phone will not work, it actually becomes a useless piece of electronics.

SIM (Subscriber Identity Module) card is very small, but it allows your mobile phone to work. A SIM card stores all the necessary data of the mobile phone: SMSs, MMSs, contacts etc. This makes this card a bank for your phone, without it you will not be able to make calls, receive calls communicate via SMS. It is the main module of the phone, thus we can compare it with the computer's CPU, and it is the heart and the brain of a mobile phone.

This tiny chip that we call a SIM card is actually a microprocessor that stores all the information and data of the mobile phone. The SIM card's main characteristic is its telephone number as one card has a unique intrinsic telephone number. This is how you get the call and not your neighbor when people want to talk to you. When you take the SIM card out of your phone, the second one cannot be used as a phone. And of course changing the SIM card will change your phone number.

Storing data of your phone is another feature that a SIM card has. Usually SIM cards have capacity of about 64 KB – 1MB. However, there are giants that some companies have started using now. These cards have capacities of 128 or 256 MB which is very much for a simple phone. You can use a multimedia phone and store pictures and your favorite tunes to the SIM card.

SIM cards can also be very flexible in proposing you different services. Usually it is prepaid and post paid accounts where you can choose any service you want and it will be added to the ones you chose. Nowadays, we can even change out mobile phone number by just calling our provider. So a SIM card becomes a very flexible device with big storage capacity that allows a piece of plastic called mobile phone work and keep you connected at any times.

Comments:

September 9th, 2008 03:21 aloize said:

hi

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