Pictured below, is the Apple's iPhone 5 concept design from the folks at HandyFlash who gives us a glimpse (possibly) into what the next generation of Cupertino's iOS-powered device could look like. The thin metal frame offers no room for physical controls. The entire left side of a line will touch the volume control. To increase the volume you move your finger from bottom to top, to reduce the volume from top to bottom. iPhone 5 supports 4G wireless.
"Apple should also turn on the resolution of new retinal Plus displays. This last criticism silenced, the backlight of the display should be adjustable. This text can be read on electronic paper as the best and without signs of fatigue in both sunlight and in darkness."