I am probably one of the few that use my iPhone more or less like a dumb phone, so pardon my ignorance. Is the iPhone mic able to pick the entire audible spectrum (and then some)? Does this mean companies like Neumann, Shure, Rode should feel someone is coming for their lunch?
Yes, they should. And they are already very worried about it. Only know that with certainty about Shure but I'd be surprised if the other companies weren't thinking in the same direction. My assumption is that we'll see the same development in the audio recording space as we saw it in the camera space. It's not 1:1 exactly the same - microphones have always been a lot more in the (semi-) professional area than camera…
Guitar pedal and amp modelling of some real quality and portability hit the market over a decade ago, but in that time the boutique analogue market for effects and amplifiers has exploded.
It'll be hard to model the variations possible in microphone configuration. There are some techniques that will just plain require multiple dedicated microphones—no matter the environment.
But other solutions like Zoom handhelds will definitely diminish in number. I used to rent something like that to direct from the soundboard so a former band could record our live sets. Now all you need is a line-in to your phone.
Same with just being able to jot down ideas—I'm totally excited to have recordings to my phone not end up compressed garbled messes—even possibly usable? Yes please!
That said, if everyone is done with their Neumann's, you can kindly deposit them with me for free!