A lot of the latest Iphone 5 mockups shows a new back panel. Im pretty sure this panel is added for a reason. It can´t be a visual one, while the panel makes it less solid casted than the iPhone 4(s)...IMO I have tried to come up with some ideas: o Extra Touch-panel. Could be used for scrolling web pages and games with no interference from hands in front of the screen. o A better feature would be an energy panel, which can suck energy from its surroundings: -power from the sun -power from heat -body heat, heat from the sun and what not.. -electricity from a special charger without a cable (like the one for the magic mouse) o Signal improvement, 3g, 4g, NFC o Fingerprint recognition o Any suggestions?