What is the full form of SIM?

Aroud the world peoples use SIM  “Subscriber Identity Module” card to connect mobile phone to other mobile phone. But most of the people dont’t know what is SIM and Full Form of SIM . We are able to run the phone with the help of sim card. If the SIM is not there, our mobile phone will be like a plastic box. In this post, we will give you a detailed description of what the FULL FORM of SIM is, what is SIM, and all the information related to SIM card.

Full Form of SIM

SIM =  “Subscriber Identity Module”

What is SIM ?

In today’s world, every person is using a mobile phone. When we run a mobile phone, we need a sim card, because without inserting the SIM in it, we cannot talk and send a message to another person. And most important we use the internet on our mobile through SIM card.

Do you know full form of USB


The size of the SIM is very small, equivalent to a memory card. The SIM card is plastic in appearance, but it has an integrated chip whose work is sent data through mobile phone to cellular service provider company. SIMs have unique information like phone numbers and data stores. Fixed for all types of networks.

Earlier the size of the SIM card was equal to that of ATM card or credit card, but gradually it came down gradually over time, and in today’s time mini and micro sim have become very small.

The first SIM card was invented by a Gieseck & Devrient work in German company in 1991.  

How to Buy a SIM Card

You will get the SIM card easily at any mobile shop, you can go to the mobile shop and buy the SIM card of any company like Jio, Vodafone, Airtel, and BSNL, etc.

To buy a SIM card, you must be 18 years old and also have an identity card and photo for which you can attach your Aadhar card, Voter card, and DL.

Editorial Staff

iFullForm.com is the Largest online (Acronym) Full Form list learning website, here you can learn and explore all full forms list in different category for online exams preparations and more.