Ants Suddenly Circling an iPhone

This sidewalk is swarming with ants. Someone must have dropped a lollipop. So what happens if you put an iPhone down among them? Nothing at first, But watch what happens when the phone rings! Suddenly, all ants are marching in the same direction, circling the phone. Why do they do that? Of course, there’s that one ant crawling on the phone -he’s always been a bit different, they say. HuffPo offers some speculation on what may cause the circling behavior.