A Smart meter generally refers to a type of advanced meter (usually an electrical meter) that identifies consumption in more detail than a conventional meter; and optionally, but generally, communicates that information via some network back to the local utility for monitoring and billing purposes (telemetering).
The new industrial meters that meter three phase connections have a new module connected to them and this is connected to a small aerial and the module connects to the EON network thru the mobile phone technology built within, so the company can programme or read your meter without even sending an engineer....