I wonder what the US Patent and Trademark office has for us today...doo, dee, doo...OMG!!! A Wii Phone?!? Check out this patent filed by Nintendo for the descriptive, "Electronic apparatus having game and telephone functions." Then, take a look at some of the pictures.
Also, be wary of the rash of cutsy puns we'll be sure to encounter. I'll save you the pain and just lay out some options now: nintendphone, wii-dial, call wii-ting, call mii (sounds familiar), the phone's wii-nging...well, you get the point.
Hat tip to SlipperyBrick