Hard to hear phone calls

[zadar]

I have nexus one so the problem is if someone call's me or i call it very hard to hear the other person I am out of the ideas how to fix it

after flashing 1.9.9 (falshed like i was coming for an different ROM) there is a new problem every time i get a call the speaker turns on

 

[zadar]

i so happy found a fix it was not a software problem, but 1.9.16 still helped

so here is what I did, cleaned the phone with air cleaned every dot that covers the speaker

hope it helps if someone run into this thing...