The fact that your fathers Cingular phone has poor audio even as you say in an area with full signal strength leads me to believe that his mobile handset may be defective and should be taken in to be looked at by a tech. In my house I had full bars with Cingular and now I only get about 2 bars on my Verizon phones, but yet both Cingular and Verizon's audio sound the same to me. The only difference that I will note here is that I can still make and receive calls with no bars of service showing on my Verizon phone, but on my old Cingular phones I could not make or receive calls without at least having one bar of service. That being said, we are comparing two different services here between GSM and CDMA, so the number of bars don't necessarily represent the true picture of service. Now on to your signature. :lmao: How can Verizon's service be the best in the cell phone world when they haven't even fully deployed their over seas coverage yet? As to your comment about checking out the maps, I did and the area that I live in according to Verizons maps is listed as having "full" coverage when in fact they do not. To Verizon's credit they do state clearly on their maps : This map is not a guarantee of coverage and may contain areas of no service. Even within a coverage area, there are many factors, including customer's equipment, terrain, proximity to buildings, foliage and weather, that may impact service. (This statement can be said about all of the leading wireless carrier maps. None of the carriers can guarantee that their customers are going to have service every where they go. I'm almost done. In closing just to bring this back on topic, I've been using GSM and CDMA both for 3 weeks now, and can honestly say that I haven't noticed that much of a difference in terms of their sound quality. Except for tonight when I was talking to my sons teacher on my Verizon phone and I had to keep turning the volume up because she sounded so far away that I could hardly hear her. My faith was restored when at the end of our conversation she apologized for her laryngitis. :lmao: Edit: I just wanted to add here that my above opinions are not in favor of any one of the leading carriers.