samsung omnia lite mic problem GT-B7300

I use samsung omnia lite (model: GT-B7300) mobile phone. I always had issue with its mic. The person at the other side is not able to hear anything as well as there is break in voice.

I was able to setup for its optimum performance. And now it works great.

Here is how i was able to boost mic on Samsung Omnia Lite

Put this code *#0002*28346#
Press Gain
Go to Mic Amp Gain
Set this:
MGNR7 0110
MGNL3 1001
I hope it's will help you.