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.

Possible answers: I. Plug your headphones into the lightning port. These should fit into the lightning port the same way your iphone 5 or 6 charger does.; II. 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.; III. Set the cable end to a meter stick. Make sure the meter stick is pointed north.; IV. To obtain the lightning plugging port, first open the lotus screen on your iphone. Look for the box where the volume buttons are.;
I.