Motorola Droid :: Dropped Calls Or People Cannot Hear Me On Phone

My friend is having a problem with her droid. When she is on the phone talking it is constantly, muting her voice or something cuz no1 can hear her. she just got the phone less than a week ago. I read online and found a bunch of stuff about the proximity sensor and the software issues, however those were all dated last year around winter time. So I am trying to see if there is a current fix for it. I see on the forums people have some problems with hardware on their incredibles but I didn't see a thread for the droid. Basically she can hear people talking but no1 can hear her and it happens like every other phone call.