use a smartphone mic with a mixer I need an app that makes the output jack audio of the smartphone coincides with what is picking up the microphone. In other words, I would like to use the microphone of the smartphone, like a normal microphone to be connected to a mixer. from an electrical point of view it is feasible, I was wondering if it was possible even on the software side.

has a similar app already been created?
here's a built one that I'm talking about....    


Direct Download APK from my Google Drive

New Mic2Aux.apk


This version has control over the 3 pin - 4 Pin microphone, using audio source changing in settings.   


Hope this helps clarify how it works.


The microphone is recorded into a stream
The stream is played via the headset or main speaker
When using No headset, the Audio is looping from speaker to microphone continually getting louder.  
If using Aux cord, there's a delay between processing into a stream and then playing via the output.  
It does work as an example app on my device, however not efficient enough for realtime recording.