I don't really know what is wrong with this phone. I have spent hours looking online, and can't find exactly what the problem is, so I come to you all for help.

Sometimes, callers cannot hear me talk at all, other times they hear me faintly with alot of noise. Sometimes blowing into the mic works, but it seems to be picking up feedback. It makes a noise similar to when you put an sms phone near a speaker, that annoying buzz noise.

I am no expert, I don't know what it is, or if there is a fix, but I beg... HELP!!!!!!!