Like in buzzing noise when your using the phone. Ever heard a blown speaker? Well, that's sort of what it's like talking to people on the phone. Speaker works fine, and I didn't think about it until the rep told me that I could use bluetooth. Anyway, this will be my third D2. First one was my fault, I bricked it after doing an sbf. This time however it seems like the speaker is just blown. Rep asked if there was anything else he could do. I suggested sending me a brand new X2 as a replacement, however he did not agree with that idea. Oh well. Just got to remember to bring it back to stock before I send it back to them Replacement arrives on Tuesday.