What happens next?

How to use headphones on an iphone 7
Locate your iphone's lightning port.
While the 3.5 millimeter headphone jack is gone, the traditional charging port--also known as the lighting port--is still at the bottom of your phone. You'll plug your lightning headphones cable into this slot.

Select from:
*Plug your headphones into the lightning port. These should fit into the lightning port the same way your iphone 5 or 6 charger does..
*Insert the apple id box into the keyhole of the charging port. You'll need this id space to plug your headphones into the neck of your iphone..
*Set the cable end to a meter stick. Make sure the meter stick is pointed north..
*To obtain the lightning plugging port, first open the lotus screen on your iphone. Look for the box where the volume buttons are..
Plug your headphones into the lightning port. These should fit into the lightning port the same way your iphone 5 or 6 charger does.