The first SIM card was developed in 1991 by Munich smart-card maker Giesecke & Devrient,
who sold the first 300 SIM cards to the Finnish wireless network operator Radiolinja.
Today, SIM cards are ubiquitous, allowing over 7 billion devices to connect to cellular networks around the world.
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who sold the first 300 SIM cards to the Finnish wireless network operator Radiolinja.
Today, SIM cards are ubiquitous, allowing over 7 billion devices to connect to cellular networks around the world.
📱📲📱📲