In the episode "Lost in Translation" (The one where Zack brings a Japanese opera star to school, and Maddie and London are trapped in a closet.) When Maddie is holding London on her shoulders so they can get a cell signal. While London is gossiping on the phone with a friend, her phone dies. You can get a clear shot of the phone's screen and there is a still picture on there. It looks like one that they put on a fake phone. I know it's dumb, but kinda cool.