They make such a big deal out of rounded corners. I think the iPhone would be more comfortable to hold if they didn't have the sharp/beveled edges along the sides. I'm not suggesting they go back to the iP3's, but a micro-curve instead of micro-bevel seems like a better idea. With the thinner size and lighter weight it isn't as much an issue as with the iP4's. The sharp edge on the iPad 3 also makes it uncomfortable to hold for long periods of time.