Who invented the mobile phone SIM card?

Subscriber Identification Module (SIM) is the integration of SIMcard. I understand the meaning of Illabrations? Abbreviations such as the word abbreviation, as well as the whole writing of those letters are called Elaboration. For example, here is the SIM Abbrevation and Subscriber Identification Module. Now the question is, who made this simcard or who first made it, so?

It is a bit difficult to say that the first SIM card was made. Because, a German company by creating the first simcard. That company made the first SIM card, it can not be said separately, is not it? The German company's name is JC and DeVrient, in short Giesecke & Devrient. The company's headquarters in Munich, Germany. In 1991, the world's first SIM card was built there.

It is a bit difficult to say that the first SIM card was made. Because, a German company by creating the first simcard. That company made the first SIM card, it can not be said separately, is not it? The German company's name is JC and DeVrient, in short Giesecke & Devrient. The company's headquarters in Munich, Germany. The world's first SIM card was also built in 1991.

However, the company that bought their first SIM card was not a German company. Finnish company Rodolinja bought the first three hundred SIM cards made by them. Not only that, the first SMS (Short Message Service) service is also the first in the world, in 1993. They also used to buy the first ringtone and download them. That was in 1998.

Those early simcards of the world but were not as it looked like now. At that time there was a simcard in the shape of the equivalent of the debit / credit card of the present! It is called full-size simcard. Later, the shape of the simcard gradually became smaller. The name we use is called mini-simcard. There are more than three types of SIM cards in small sizes - micro-simcard, nano-simcard and embedded-simcard.