While smartphones are good all around devices, and Apple showed that a smartphone with a good camera, DAC, screen and sensor suite can exist, purpose built devi

While smartphones are good all around devices, and Apple showed that a smartphone with a good camera, DAC, screen and sensor suite can exist, purpose built devices still beat them. They have longer battery life, more predictable performance, and a wider range of operation parameters. I’ll always prefer my specialized equipment for serious music listening, my ebook reader for longer reading and honestly pen and paper for serious note taking. They perform better and I get more performance with less effort.