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Topic: GSM network coverage (Read 351 times) previous topic - next topic


Which telephone company uses the SIM card?
I want to connect in the field where not all phone companies offer coverage.
Thank you


Just a guess, but usually all the antennas are shared and a giant computer in England (I'm told) records and figures out the billing on all the SIM cards.
The smartest person can make the dumbest mistake.

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