Pushing certs to end user devices is simple. First you create your own national CA. Then you make all government services use TLS certificates signed by the nat

Pushing certs to end user devices is simple. First you create your own national CA. Then you make all government services use TLS certificates signed by the national CA. Then you make phone vendors preinstall the root cert of the national CA into the trust store if they want to sell them in your country. Then you make your ISPs buy and install MITM appliances.