Improved front and rear cameras - now with optical image stabilization - deliver much improved photos, especially in low light. Water resistant. A faster processor, plus better battery life. More onboard storage than last year's models for the same price. No headphone jack ( but there's a dongle and compatible wired headphones in the box) . Click-free home button takes getting used to. Only the larger 7 Plus has the cool dual camera. Shiny jet-black version scratches easily. The iPhone 7's notable camera, battery and water resistance improvements are a worthwhile upgrades to a familiar phone design, but ask yourself if you really need an upgrade.and if the Plus might be a better choice.
