What is Sim Card and types of Sim Card?

What is Sim Card?

A SIM card, also known as a subscriber identity module, is a smart card that stores identification information that pinpoints a smartphone to a specific mobile network. Data that SIM cards contain include user identity, location and phone number, network authorization data, personal security keys, contact lists and stored text messages. SIM cards allow a mobile user to use this data and the features that come with them.

Types of Sim Card?

• Mini (Standard) SIM cards measure 25x15mm and are used in older and basic phones.

• Micro SIM cards measure 15x12mm, and are more likely to be found in phones from the 2010s and up.

• Nano SIM cards measure 12.3x8.8mm and are used in newer smartphones.

• eSIM, or embedded SIM’s, measure 6x5mm, and has the SIM card installed in the phone already. eSIM’s are activated remotely by the network carrier.

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