iPhone 7 does not have a 3.5mm audio port. In order to use your 3.5mm audio devices you have to use a Lightning to 3.5mm jack adapter like this genuine Apple MMX62ZM/A adapter. It is designed to work with the new iPhone 7 and the iPhone 7 Plus, but you can also use it with all Apple devices with a Lightning port, such as the iPod touch, iPad, and iPhone.
