The iPhone 7 most noticeable (and controversial) difference between its past models has to be the removal of the headphone jack. Although everyone went into a major panic when it was announced. each iPhone comes with a headphone jack adaptor which means you don't notice much of a change. The iPhone 7 also comes in a new colour- jet black- and is finally water resistant! It's also faster, brighter, has a better camera ad now has a fixed touch sensitive surface with haptic feedback which should reduce button failures.