With respect, I think a greater part of the problem is mistreating your stuff. One, two, even three broken phones I can see. Fifteen indicates a problem with the user.

My iPhone 4 fell out of a pocket as I was getting out of my car and cracked the back glass, which was a cool $70 out of my pocket. I got a replacement back and it's fine again, but I made goddam sure not to drop it again.