Same here. VERY annoying, especially when you find out it isn't working when someone calls you and you answer. At least when you place a call, if you can't hear it ringing, then you know it is messed up.
For me, it works best for me to open the screen and then pinch along the earpiece side of the screen in several places.
My comment isn't directed only at Fxtec, but phone makers need to remember that they are selling a "phone." It should work well as a phone first and as a computer second. In the case of the Pro1, the following issues really detract from using it as a phone: