so this is what happened. I made call's yesterday in the afternoon and it worked perfectly and when i made another call last night, the person on the other end couldn't hear me but i could hear him perfectly. the best he could hear was a very faint sound when i would scream into the mic. it's been that way ever since. i could hear him perfectly so the speakers working well, it's just the mic that's gone crazy. i dropped my phone over a week ago and there were no problems at all till last night so i don't think that was the cause, it just happened suddenly. the only way that the person on the other end could hear me is if i used the earphones that came with the iPhone. help!