- Ever thought what a SIM means? SIM stands for Subscriber Identity Module and is known to be ‘Smartphone brains.’ Knowledge is power, stick around.
- SIM cards were recently introduced in 1991 in Munich by Gieseche and Devrient. SIM’s revolutionised the entire industry.
- SIM cards get a smaller and smaller namely standard sim, micro card and the nano card being the smallest size.
- Use your SIM in someone else’s phone and it still works in case of emergencies. It stores all contacts and can be accessed on any phone.
- Every SIM has a unique MSISDN called ‘Mobile Subscriber Integrated Services Digital Network Number’ which is basically the phone number!
- SIMs have a microchip protected by a pin and when turning the power on, a special number is broadcasted called IMSI.
- SIMs are used for crime investigation purposes as SIM cards are needed for encryption and decryption.
- Mobile Station is the name for the SIM card and the phone it is used in.
- E-sim and Soft SIM have already been introduced!
- This generation is a SIM card evolution and its more interesting to see what the next two decades will do for the future of SIM cards!

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