USSD and MMI, see for example https://en.wikipedia.org/wiki/Unstructured_Supplem... | Hacker News

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taneliv on April 28, 2025 | parent | context | favorite | on: Did 5G kill the IMSI catcher?

USSD and MMI, see for example https://en.wikipedia.org/wiki/Unstructured_Supplementary_Ser... . On a quick glance the references did not seem to list what codes are usually available, so just search "ussd code list" or similar.

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