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hi! You are right! The cellular protocol we use is called USSD. https://en.wikipedia.org/wiki/Unstructured_Supplementary_Service_Data https://en.wikipedia.org/w
by benjaminf 8y ago
hi! You are right! The cellular protocol we use is called USSD. https://en.wikipedia.org/wiki/Unstructured_Supplementary_Service_Data https://en.wikipedia.org/wiki/Unstructured_Supplementary_Ser...