Sim Card: Nowadays everyone uses mobile phones. Mobile phones were started for calling, with time it became more advanced and today we use its modern form as a smartphone. But, even after so many changes, its main work calling is still included in it. Everyone knows that for calling we have to insert a SIM card in it. You cannot make calls without a SIM card. With the development of technology, the SIM card has also changed its many forms. Even nowadays E-SIM is being used in modern Smartphones. Today in this article we will share information related to SIM card with you. Like how does a sim card work? How many types is it? What is its full name? Let’s know…
what is sim card and its full form
SIM card is a kind of small smart card. There is a chip attached to it. To use it, GSM (Global System for Mobile) has to be inserted in the mobile phone. It stores data for subscribers in GSM mobile phones. User’s identity, his location, phone number, security key, network in the data stored in the SIM card Authorization, personal data, mobile contact list and text messages etc. are included.
The information about the customer ID of the user is also in the Sim Card itself and not in your mobile phone. That’s why you can use your sim in different GSM mobile phones as well. The SIM card can only be used on GSM mobile phones. Being a CDMA (Code Division Multiple Access) mobile, it can be used only in the new type of LTE Enable handset. The full form of SIM card is Subscriber Identity Module or Subscriber Identification Module.
How is a sim card made?
Plastic is used to make SIM cards. First of all, a small piece of plastic is made and silicon and a chip are fitted in it. After that he is given various Connected to networks like Jio, Airtel, Idea etc. Then as soon as you put this sim in the mobile, it immediately connects to its network.
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How is the call done?
MTSO landline systems – are connected to the PSTN. When you make a call, your mobile signal travels to the MTSO of the ‘Base Station’ near you, which converts it into PSTN. Now it is taken to the MTSO nearest to the number on which the call is made. Due to this, the bell of that person’s phone rings. It happens so quickly that you don’t even know.
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