I think it was Aral Balkan who said we're like cyborgs now with our smartphones. I remember him saying that in a talk, and the idea resonated with me. The key difference is that it's not a chip in our brain, but a device we hold and treat like a pacifier. I think we need a new term for smartphones though. I don't know the stats, but who makes plain telephone calls anymore when we have WhatsApp etc? A smartphone is really just a small tablet that happens to have a baseband (that people rarely use apart from cellular Internet).