In his North Korean mining town, Kim Hak-min loved getting his hands on electronics so much that he became the go-to guy to fix his neighbors' watches, TV's and radios. It earned the nickname "Repair Boy."
"I remember first opening up an electric toy when I was eight years old, figuring out how it worked and clutching it when I went to sleep," Kim recalls.
But by 2011, Kim had yet to encounter a smartphone.
"When I was in North Korea the only phones I saw where 2G and they were flip phones," Kim says.