What is a SIM card: What it does, how it works and why your phone needs one

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Every smartphone needs a SIM card to do its job. But maybe you don’t quite know what a SIM card is or how it works. Here’s a handy VfvRQ7gDyhgKckYhX4yboBe to everything a SIM card can do.

What is a SIM card: What it does, how it works and why your phone needs one : Read more