 Then there was a second villain, the one hated zeroed in on as the bad guy of his book, the smartphone. 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 hate, there's an additional devil hidden in the smartphone, social media.