I have had my EVO for about two months or so with no problems until yesterday, I pulled the back off and slightly blew on the speaker to remove the little bit of dust that I noticed on there, someone called me almost right afterword and I noticed the speaker was totally blown. The same ting happened to my previous phone, the hero. and just like the hero, there is dust coming into the phone and showing in the top left corner, and it looks terrible when the screen is off, I keep the phone in a leather case on my belt and it is almost never in my pocket. so I guess what I am getting at is, DO NOT BLOW ON YOUR SPEAKER!!! I took the phone into sprint and the guy I deal with all the time took one look at it, and ordered me a new one, like it happens all the time. I just wanted to get this out there and see if anyone else has had either of these problems and the way they solved the problem. thanks!