Help Speaker phone not working


So when I put the speaker on in a call the other party could not hear me, so after playing around found that only the mic on the top of the phone works in speaker mode.
If you talk into the bottom one you get a kinda distorated muffled sound ( there is nothing blocking the bottom mics) they work fine durring any other process.

So has any one else played with the speaker phone enought to notice if only there top mic works in this process.