The primary purpose of a SIM card having a cut corner is to ensure it is inserted into the mobile phone in the correct orientation. This design guarantees network connectivity and enhances the security of the SIM card. Through the IMSI number and associated keys, it connects the mobile to the network and handles user identification and authentication.
SIM card Corner: Why is a corner of the SIM card cut? This cut is made for correct fitting and security within the phone. Network connection is only possible when a mobile user inserts the SIM card in the right direction, enabling proper functioning of call, message, and data services. The SIM card, known as the Subscriber Identity Module (SIM), stores the IMSI number and related keys. It provides the mobile network with user identification and authentication, preventing a SIM from one carrier from connecting to another carrier's network.
Correct Fitting and Security in the Phone
The primary reason for a SIM card having a cut corner is to allow it to be fitted correctly into the mobile phone. Technology experts state that this cut helps the user identify the correct orientation for inserting the SIM card, preventing it from being inserted upside down. If the SIM card is inserted incorrectly, it will not function, which can lead to network issues and the risk of damaging the SIM card.
This design of the SIM card is also important from a security perspective. Connection to the mobile network is only possible when inserted in the correct direction, allowing the user to easily access call, message, and data services. This small cut ensures significant technical benefits and a better user experience.
How a SIM card works
The full form of SIM card is Subscriber Identity Module (SIM). It functions to connect a mobile device to a cellular network. The SIM card stores the IMSI number and associated keys, which help the network in identifying and authenticating the user.
When the mobile phone is turned on, the SIM card transmits data to the network, and the network verifies whether the user is permitted access. This is why a SIM card from one company cannot connect to the network of another company. This system ensures the security and reliability of mobile connectivity.
