The Doctor's sonic screwdriver is just a smartphone (multipurpose device that is loaded with technology) that started with a different device as the base function. I'm also reading a book where he insists on referring to smartphones as "mass-market portable music players". I don't even have the phone app on my homescreen. my "smartphone" is more often a "smart-flashlight", or "smart-camera", or "smart-porno magazine" than a phone at all