Would You Upgrade From IPhone 4 To IPhone 4S ? For the following functions? iPhone 4 iPhone 4S Dimensions 4.5 inches tall by 2.3 inches wide by 0.37 inch thick; 4.8 ounces 4.5 inches tall by 2.3 inches wide by 0.37 inch thick; 4.9 ounces Display 3.5-inch,