South Korea under the dictatorship of Park Chung-hee where South Korea's economy rapidly grew from industrialisation and the Chaebol corporations such as Samsung and LG. Ever since the industrialization of South Korea's economy, South Korea has placed its focus on technology-based corporations, which has been supported by infrastructure developments by the government. South Korean corporations Samsung and LG were ranked first and third largest mobile phone companies in the world in the first quarter of 2012, respectively. An estimated 90% of South Koreans own a mobile phone. Aside from placing/receiving calls and text messaging, mobile phones in the country are widely used
Propaganda in South Korea of attacks by North Korea including the sinking of the South Korean navy frigate, ROKS "Cheonan". Popular South Korean films often show reunification themes with friendships or family ties across the north and south division. The film "Joint Security Area" (2000) was the highest grossing Korean film up to that time. The movie depicted a friendship between soldiers from the north and south along the DMZ. The popular war movie, "Tae Guk Gi", from 2004 depicted close brothers divided as they are caught in the Korean War. South Korea broadcasts radio messages toward North Korea with news and propaganda themes.