How to find my Wi-Fi password? - 2

I looked on my router and it said Serial pin, Serial, and Mac. It gave me the code for all of the listed, but I don't know which one to plug into on my iPhone. I looked on my iPod to see the DSN and plugged that in but that didn't do anything. How, where, and what do I plug in?

The only way it will say your router password in the router is if you have at&t.

On your iPhone select your Wi-Fi network and choose use wps.
Then on your router there should be a little tiny button on the side that is labled WPS press it within 2 minutes of the time that you select the wi-fi network on your iPhone and your network will be set up.