Hey! Ok I have had my HTC Aria for about 3 months. It has been wonderful up until about a week ago. When I call people if they don't answer I have to pull the battery out to hang up. I cannot call any numbers that will have me dial extensions because when I go to the calling screen it just blacks out like its locked and will not come back on. I am not sure what to think about it. I have tried everything I can think of to get it to work again. ANy ideas??