What is the full form of SIM? | What is SIM

What is the full form of SIM?

The SIM full form or full name of “Subscriber Identification Module”. 

Friends, if you use a mobile phone, then you will also know that having a SIM is very important to talk to any mobile.  If there is no SIM of any company in your phone, then you can not take advantage of facilities like calls and messages. The size of the SIM is very small as a memory card but it has a chip inside which only mobile can read.

The SIM card looks like a piece of plastic, but this plastic piece has an integrated chip that can read only mobile. Every SIM card has unique information, phone number and data store which is sure for every network.  Helps in using communication service. If you do not have a SIM card, then you cannot use messages, calls and the internet on your phone.

The first SIM card that was made was the same size as the credit card, but gradually it got reduced in size and today mini and micro sim cards have become very small.

Now let's talk about GSM and CDMA SIM and what is the difference between these two.  See when we talk about SIM, then two names come first in our mind, GSM and CDMA, but we do not know what is the difference between them and how it is different from each other.  I can explain to you in common language without being too technical, see what happens GSM, you can use it in any mobile. Suppose the battery of one of your phones runs out, then you can replace that SIM card in another mobile.

Can be used by applying.  Whereas CDMA SIM does not happen in CDMA, you already get it with the phone. You cannot get out the SIM. The SIM belongs to the same company whose mobile is. For example, in Reliance you get the option of CDMA also means SIM and phone.  Both will be from Reliance Company, you cannot put SIM of any other company in it. I would like to tell you for your information, nowadays GSM is mostly used.

Conclusion

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