After a few weeks of suffering through very poor muffled underwater sounding conversations over my Inc I found a solution that really works! Do the following: 1. Go to phone and Dial ##778 2. Choose Edit Mode 3. Password is 000000 4. Go to CDMA Settings 5. Scroll to bottom 6. Change all three of these "Home Page" "Home Orig" "Roam Orig" from EVRC to EVRC-B 7. Hit Menu and Commit Changes Phone will reboot and your done! EVRC-B is a superior voice codec which yields substantially better voice quality. More info - Enhanced Variable Rate Codec B - Wikipedia, the free encyclopedia ENJOY!