Thanks to the Google patent search feature, a Nintendo phone patent has been unearthed. Originally filed back in November 2001 the device 'A game and a mobile phone type electronic apparatus' by Nintendo has the following features:
Patent Info: http://www.google.com/patents?vid=USPAT7069044&id=GBh4AAAAEBAJ&dq=7069044&num=100
What this has to do with the Wii im not too sure i figured it might be of interest to Nintendo fans
a game CPU which executes a game related process;
a phone CPU which executes a phone related process;
a play key to play a game;
an interruption key to initiate an interruption of said game;
Patent Info: http://www.google.com/patents?vid=USPAT7069044&id=GBh4AAAAEBAJ&dq=7069044&num=100
What this has to do with the Wii im not too sure i figured it might be of interest to Nintendo fans