If you have used a mobile, then you will know about the SIM card. The SIM card size in the feature phone was slightly larger, but after the smartphone came down, their size was reduced. Now such phones are coming, which support e-SIM and there is no need for physical SIM card. There was a time when the SIM card size was as much as the credit card. Let us know some history related to SIM card today.
When was the SIM card started?
The full name of the SIM card is the subscriber identity module (SIM). This connects the phone to the mobile network. The SIM card was first invented in Munich. In 1991, Giesecke and Devrient, the company that makes smart cards here, made the first SIM card. Two variants of SIM cards were introduced at the time of launching. The size of one of them was equal to credit card, while the other version was of small size. Large -sized SIM cards were used in fixed car phones and initial portable phones, while small portable phones used to add mini SIM cards. The advantage of the SIM card coming is that users had got the option to switch their subscriptions between different devices, which was not present before.
Since when the sim was short?
The SIM card size decrease began in 2010 and in 2012 even small SIM cards started coming. Most of the smartphone companies designed the SIM card slot of their smartphone according to both these sizes. For the last few years, smartphone companies started shortening the SIM card slot to provide more and more features in their phones. After this, the size of the SIM card was reduced further. In 2017, the software version of SIM card was introduced to E-SIM. Initially it was limited to webarable device, but now it is also being used in smartphones.
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