I don't know much about design - hoping others here may have a perspective. I got into the (apparently bad) habit of putting my phone in my back pocket way back when the iP3 came out. The 3/3S had just enough flex to it so I had zero issues and the 4/4s was a solid brick- with the thicker perimeter band and more ridged back (but I know more breakable if dropped). The longer and thinner 5/5s design has resulted in 3 5/5s's becoming bent at the sim slot. Will the new unibody style design make it any more rigid?