Radical changes to new iPhone 7 could be on the way, according to speculation. Multiple technology news websites are reporting that the 3.5mm headphone socket could be axed on the new iPhone 7 – and that it would allow Apple to make the latest version of its smartphone even thinner. It could also free up space to increase the size of the battery. Should the next iPhone have a headphone jack? The Lightning cable port could instead be used for sound output…