Phone: Encrypted / White / Russian / Secure / VIP / Programmable SIM Cards

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https://www.vice.com/en_us/article/n7w9pw/russian-sims-encrypted

The Secret SIMs Used By Criminals to Spoof Any Number
Criminals use so-called Russian, encrypted, or white SIMs to change
their phone number, add voice manipulation to their calls, and try to
stay ahead of law enforcement.

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