Mobile phone industry in South Korea technology. Regarding the Korean mobile phone industry's overseas experiences, SK Telecom has helped the first mobile phone service companies in Mongolia, Uzbekistan, Cambodia, etc. In China, it helped China Unicom's CDMA implementation, both technically and financially. Samsung and Apple have the largest market shares in Korea. Nokia already discontinued its sales operations in Korea. Mobile phone industry in South Korea The mobile phone industry in South Korea is described in this article. As new technology is developed, such as, WiBro and LTE protocol suite, more demand is growing in quality communication service area. The are three mobile phone service providers.
Mobile phone overuse Microwave auditory effect which was discovered in 1962. Studies show that users often associate using a mobile phone with headaches, impaired memory and concentration, fatigue, dizziness and disturbed sleep. There are also concerns that some people may develop electrosensitivity from excessive exposure to electromagnetic fields, although these symptoms may be primarily psychological in origin due to the nocebo effect. Using a cell phone before bed can cause insomnia, according to a study by scientists from the Karolinska Institute and Uppsala University in Sweden and from Wayne State University in Michigan. The study showed that this is due to the radiation