I read either here or on another forum that someone "twisted" their phone and that made it work. After buying a phone repair kit to try to locate the speaker myself proved unsuccessful, I tried "twisting" my phone and it actually worked!
Here's what I did: I put one hand on the bottom half of the phone and one hand on the top half of the phone with both palms flat on the screen. I twisted the top half towards me and the bottom half away from me gently while I had the radio on and that made it work!
I know it's retarded that something so simple should fix a phone and means it's a cheap quality phone. But it worked and it was free!