I can only talk and hear on my palmpixi when i use

I had the exact same problem on 2 different phones before this one. No one at Sprint could figure it out either. It's a problem on the Pixi, and the Pre where the phone thinks it has headphones inserted into the jack, when there aren't, but it disables the earpiece. To Fix: Take a normal jack, dab alcohol onto the tip then insert it into the headphone jack and remove a few times. This cleans out the jack and should solve the problem! Worked for me first try! Also check out precentral.net for more awesome tips!