Question: 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.
Answer: Find the 3.5mm jack on the end of the headphone cord. Plug that into the 3.5mm port on the phone.