![]() ![]() For example, the IMSI is used to connect another user that is phoning your mobile number to your specific phone, rather than to someone else’s. As well as containing a mixture of information, they hold a unique ID, known as the International Mobile Subscriber Identity, which identifies your phone to the network. Essentially, this allows you to make calls, send SMS messages and connect to mobile internet services (such as 3G, 4G, 5G, etc.). In other terms, a SIM card is the middle point which connects your phone and network provider together. What is a SIM card?Ī SIM card, otherwise known as a subscriber identity module, is a small piece of plastic that slots into your mobile phone to allow you to communicate with your mobile phone carrier. We have put together a short guide which explains everything you need to know about SIM cards and answers the most commonly asked questions. The tiny piece of plastic slotted into the side of your device is crammed full with information that allows you to communicate with one another.Īre you wondering how a SIM card works? Then, look no further. ![]() But to make calls, send text messages, or use mobile data, you will need to insert a SIM card in order to connect to your mobile network. ![]() You use it to catch up with friends, check in with work emails, and capture life’s precious memories. ![]()
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