Do I need to add a prefix to call the Things Mobile SIM card?

The Things Mobile SIM card is not enabled for traditional voice calls, but it can send and receive SMS.

To send an SMS to the Things Mobile SIM card, you need to add "00" or "+" before the SIM card number, which starts with 88236.

To send SMS from the SIM card to local numbers, you must always include the international prefix of the destination number.

For example, for an Italian number, use the prefix +39 followed by the mobile number.

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