Is there a codec selector on cdma like older gsm phones have? I have had a couple of calls where I have had to call the person back on my gsm phone because I couldnt understand a damn thing they were saying.

Nokia 1325, some calls are ok and outgoing ones are ok on it, its just being a couple of incoming calls. Ironically one that was bad was the telecom dealer on their 027 number calling to see if it was all working ok...