Xamarin - AudioRecord read not working

ok my code works on an emulator, but now I am trying to test it on a 7 Voyager android 4.4.2 I run this: returnSize = Read (audioData,0,audioData.Length);

and I get all 0s for audioData... again this code works on the emulator no problem

also I did Required permissions for both RecordAudio and for ReorderTasks and I did check the mic phone on the 7 Voyager android 4.4.2 and it does work.

so how can i troubleshoot this ? also returnSize = 2084