In 2007, a citizen was shot and killed by using a mobile phone to make international calls. The incident occurred in a public place. The guns sounded and immediately caused panic, which eventually led to the tragedy of six people who died of stamping.
As a tourist, if you travel to North Korea, you can carry a mobile phone. However, foreign mobile phone cards cannot receive signals in North Korea. You can only use the mobile phone card specially prepared by the North Korean government for foreigners to make international calls, and the destination cannot be South Korea.