I have a 4S that slipped from my pant pocket onto a rough concrete floor from sitting height. The rough surface dented the plastic trim, causing the glass to sh

I have a 4S that slipped from my pant pocket onto a rough concrete floor from sitting height. The rough surface dented the plastic trim, causing the glass to shatter. I believe they went with the plastic trim due to the problems of joining glass and metal. But the plastic trim is the iPhone 4's Achilles' heel.