My phone has just started having a problem where on phone calls, the other person can't hear me. They just hear some static. I can hear them just fine. It's the same whether I call them or they call me. I tried restarting my phone, I looked at the settings and couldn't see anything obvious whereby I could have muted myself. I tried turning the call on Speaker and off again - no difference.
If it's relevant, my phone is a Samsung Galaxy S running Froyo.