Step by Step / Updated 03-27-2016
When you add friends on the Wii, you connect your Wii consoles to each other. Adding Wii friends enables you to play games with (or against) them. You can also send messages, chat, share photos, and even talk them (if you both have a Wii Speak Microphone). The Wii allows you to store up to 20 friends in your Wii Address Book by registering their friend codes.