 The smartphone was introduced to the public in 2007 by Steve Jobs and imitated by South Korea's Samsung in 2009. It became a must-have part of our lives. Then it trickled down to children. Today, 42% of 10-year-olds have smartphones. But according to Haight, there's an additional devil hidden in the smartphone. Social media, which Haight says companies like Meta designed to addict you.