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We use a lot of things in our lives, but there is a specific reason behind their design or work behind it. However, we do not know about it. For example, we all use a SIM card in your mobile, but do you know, why is it a corner of it? Have this thought ever come to the head? As a kid, you see the SIM card, but why did his design come as a design? 99 percent of people do not know the answer to this question. If you have this question in your mind too, let’s know the simple and important reasons behind it.

Exact reasons for cutting SIM cards

The standards of the SIM card are 25 mm width, 15 mm in length and 0.76 mm thickness. A corner is cut only to fit in the right place. This puts it in the SIM slot only in the same direction, which prevents the risk of damaging the SIM card.

SIM card is a kind of ‘smart card’. Its base is the silicone integrated circuit (IC) chip. The idea of ​​installing silicone IC chips on plastic cards came forward in the 1960s. Since then, MOS (MOS) integrated circuit chips as well as MOS memory technology like flash memory and EEPROM are used in smart cards.

How does the SIM card work?

The full name of the SIM card is the Subscriber Identification Module. The main task of this is to connect the mobile phone to a cellular network. The SIM card contains the International Mobile Subscribe Identification (IMSI) number and other important information to it. When the mobile starts, he reads the data in the SIM card and sends it to the network. The network is then verified by the user and allows it to use the network. For this reason, one company’s SIM card is not directly linked to another company’s network.