One thing I love about the 830 is the build quality. I have had this phone for about 5 months, and dropped the phone at least 4 times face down on the ground. The only thing that happened is minor scratches and few deep on the edge. However, the aluminum siding shows signs of it wearing out. Two corners of the black siding has its paint out. Don't know what to do. Do any of you guys have this problem. And for warranty issues, should I take my phone to the Microsoft store for repair or from the carrier I bought from. I live in Canada.