I have the htc one x with stock rom for ATT. When i try to do a voice recording, no sound is recorded, but when I record a video with the camcorder, i can record sound. I am worry that something is wrong with using the phone to talk, since i can not voice record. I would like to test out the phone call, but the phone has not been activated. Is there a test number for ATT that I can try to call and test the voice call? I dont want to activate the phone yet. thanks