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How do I know if my sms/calls through a cellular network is encrypted?
While 2G/3G/4G/5G networks have their own encryption protocols, this video claims that the decision to implement it is completely optional, so there is a chance that user data is sent in cleartext. Is this true? If that is the case how do I know if my calls and sms that I've made using the cellular network is encrypted or not?
