I'd say one slide later. On the slide you mentioned, some are wild claims which warrant more investigation but on their own are shallow. I have my smartphone s

I'd say one slide later. On the slide you mentioned, some are wild claims which warrant more investigation but on their own are shallow. I have my smartphone set to 4G only, and it works, as long as my provider supports VoLTE. Not all do, nor do all phones work with it. Phonecalls always used 2G (data connection stops). I'd love to see the proof of what happened with GPG keys.