Can't connect iPhone as an audio input to my Mac I've been trying to get my iPhone audio to channel through my Mac, and what I read was that if I plug my iPhone into my Mac, I can open Audio MIDI setup and click "Enable" under the iPhone, and then it will be as I want it.

However, if I click enable, the word "iPhone" and a USB icon appear in the menu, with everything greyed out. 
If I click the [name]'s iPhone with the iPhone next to it, It just says 
" Press the Enable button to place your iOS device in Inter-device Audio and MIDI Mode. In this mode, your iPhone or iPad will appear as an audio input device on your Mac, enabling the recording of non-telephony audio via the Lightning to USB cable. This setting also permits sending and receiving MIDI messages through the Lightning to USB cable using your favourite music applications"

There is no issue with USB lockdown or anything, because I can go into iTunes and sync my music, Podcasts, etc.
I have tried playing music through the Apple Music app to check, but it plays through the iPhone speakers.
Anyone know what the problem is here?
You just overlooked ther fact that by the time your iPhone button says "Disable", 
it is already connected!

Go to your Digital Audio Workstation (DAW)/Preferences/Audio and point to your iPhone as an Input Device.

In Ableton:



and in Logic Pro X for example:



Hope this helps!