In this new era, life cannot be imagined without communication. Communication comes in the form of sending messages, giving calls, and sending videos or pictures to friends and relatives.
There are two things that enable communication, and those are a cell phone and a SIM card. A cell phone without a SIM card can work only under a good WiFi connection. A phone plan in Australia can serve this purpose and you can choose the perfect one for yourself.
A SIM card is a chip that enables cellular networks to identify you and help you in sending and receiving data.
Though those SIM cards are very small, they can store various types of crucial data, which are needed to recognize the intended network settings. So, let’s discuss some amazing features of a SIM card and what it stores to help in our communication.
What is a SIM card?
A SIM card consists of a small chip that mobile phones use to connect to a particular network. With the help of this SIM card, you can easily make and take phone calls, receive and send text messages, etc. Moreover, you can connect your phone to the internet with the help of mobile data.
This works the best if you do not use a WiFi connection. The SIM card comes in three sizes such as nano, micro, and standard. However, some mobile networks or cell phones have been using e-SIMs recently. ESIMs are embedded SIMs; thus, no physical SIM card is needed.
This small chip can contain a lot of crucial information, and you can choose a good phone plan in Australia. It stores not only your contact information and information regarding your network but also some more things.
The information stored on your SIM card
Though your SIM card is really small, it can store the information like:
- Authentication Key (Ki)
It is unique information for each SIM card that consists of a 128- bit value. This value is used for the authentication of the SIM card on a specific network.
- The Advice of Charge or AoC
This service is known as a GSM or Global System for Mobile Communications service, which can give estimates of the expenses of your mobile services.
- International Mobile Subscriber Identity or IMSI
This number can identify your SIM card within the mobile network operator of your SIM.
- Mobile Country Code or MCC
MCC represents the first three digits of the above-mentioned IMSI number. With the help of MNC or Mobile Network Code, it can identify GSM networks.
- Local Area Identity or LAI
This code usually works as an identifier and is created with MCC or mobile country code, LAC or a Local Area Code or LAC, and MNC or mobile network code.
- Mobile Station Integrated Services or MSISDN
It is the particular phone number that you need for establishing communication. If the subscriber wants, it can be changed.
- Short Message Service Center or SMSC
The SMSC stores, delivers, and processes your text messages.
- Integrated Circuit Card ID or ICCID
This number identifies your SIM card. It is an 18 to 22 digits code. This is unique for each SIM card.
- Unblocking Code or PUK
This code is crucial if you enter the wrong PIN code three times.
So, all these pieces of information are stored in your small SIM card, and you can also choose a phone plan in Australia for your SIM.
