i no longer have any ringtone sound or text message beep or anything that has to do with my speaker. i dont know why its doing this but i also cant voice dial. it gives me a message saying "unable to allocate audio channel. close other applications and try again." i have to other applications open that i know of. i have gone into everything and exited out and still no success has anyone else had this problem and if so how do i fix it?? no sound is horrible!!!