Is anyone else having trouble understanding a caller. I have to ask a caller to repeat themselves. It sounds like trying to hear a convesation through the speaker at a McDonald's Drive through. My business calls come across as very unprofessional. My partner puts her Blackberry on speaker so we can understand each other's conversations. I usually call them back from a land line so we can actually hold a decent conversation. I'm getting very frustrated. I've taken the phone back to Verizon twice during the 1st 30 days I owned the phone and they keep telling me to adjust the volume down. That's not working.
It is possible you may have accidentally triggered the enhanced call feature. It can make a call sound the way you describe. Call a number, any number, just so you are in a call. The easiest is to call your voice mail. While in the call, press the L button until the enhanced call icon is gone, if it is there at all. Let us know how that works.