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Sim Card Mundi Corp offers Global M2M SIM Cards with coverage worldwide and roaming in more than 200 countries and 1000 networks.
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M2M, or machine-to-machine, is a direct communication between devices using wired or wireless communication channels. M2M refers to the interaction...
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GSM stands for Global System for Mobile Communication. It is a digital mobile telephony system used for trans-receiving of the data and voice...