![microcontroller - Would it be possible to use a GSM without a SIM card? - Electrical Engineering Stack Exchange microcontroller - Would it be possible to use a GSM without a SIM card? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/ichM3.png)
microcontroller - Would it be possible to use a GSM without a SIM card? - Electrical Engineering Stack Exchange
How do SIM Cards work? | In this video we use SIMtrace to intercept the communication between the phone and SIM card to understand how that works. This is part 1 in
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