What is the full form of SIM

SIM: Subscriber Identity Module or Subscriber Identification Module

SIM stands for Subscriber Identity Module or Subscriber Identification Module widely known as a SIM card.

It is an integrated circuit that is intended to securely store the international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephony devices (such as mobile phones and computers).

It is a smart memory card that enables us to establish a phone call across the globe where the contact network of the user is constant.

SIM is generally used on smartphone-operated and controlled GSM networks. It is movable and can be used by a user with any mobile device that supports this.

The SIM card contains necessary information to and from to your network and it also contains some of your personal data.

Phone number
Address book
Text messages
Personal security keys
Network authorization data
Other data