<human>: How would someone go about accomplishing this goal?
How to plug headphones into a smartphone.

OPTIONS:
- Find the 3.5mm jack on the end of the headphone cord. Plug that into the USB port on the phone.
- Find the 3.5mm jack on the end of the headphone cord. Plug that into the 3.5mm port on the phone.
<bot>: Find the 3.5mm jack on the end of the headphone cord. Plug that into the 3.5mm port on the phone.