Nokia asha 311 Mic problem solution

Now, I show you how to find Nokia Asha 311 micro problem and how to fix it.At first check your phone call the other problem still phone.When phone's microphone and then see phone.next open image down below. How to: clean full pcb and then hit with this phone call lamp and see result.If problem even then first check mark red micro parts.then is four feet mic.If you see is micro damage then micro switch.