I thought my D900 had terrible sound, until I realised the screen protector(film) that came with the phone was over the speaker in the front. I cut the top piece off and now I have much better sound. I spoke to a colleague the other day and realised he also has the D900 and the protector was also over the speaker, when I asked him about the sound he told me it is very soft. I cut his film shorter too and now he is very happy. I know a lot of people take it off as soon as they get the phone but it really helps protecting the screen.