this is diagram to show you that how to jumper mic in Nokia 7210.as in
diagram we can see there are four prints in mic.one of these points is
ground.and the front prints of it are for next point.
between these two point add a 1k resistance.so with this diagram you can use only two point and mic will work well and ok.
between these two point add a 1k resistance.so with this diagram you can use only two point and mic will work well and ok.