audio jack pin outs

[anon(662267)]

Any know what the audio jack pin outs are for this tablet? I am wanting to build an interface for my tablet to talk with my Ham Radio in digital modes. What I am really needing to know is if an external microphone can be hooked up via the headphone jack?

 

[ongre10]

4 pin 3.5mm (2.5mm) plug connector diagram and applications @ pinouts.ru