My DSi AND Wii won't connect to the Internet!!

I've had my DSi since December 25, 2012 and my Wii since December 25, 2009. They both connected to the Internet easily. Up until Sunday, they BOTH stopped. My phone and computer work perfectly. But it's on my Nintendo consoles. What the heck happened? My DSi and Wii are more accessible than my phone and laptop. Help? Thanks! Oh, and DO NOT say send them into Nintendo. Thanks.