List Of All Mobile Phone Brands
They possess technology that enables them to activate the microphones in mobile phones remotely in order to listen to conversations which take place near the phone. In 1998, one of the first examples of distributing and selling media content through the mobile phone was the sale of ringtones by Radiolinja in Finland. Soon afterwards, other media content appeared, such as news, video games, jokes, horoscopes, TV content and advertising. Most early content for mobile phones tended to be copies of legacy media, such as banner advertisements or TV news highlight video clips. In 1983, the DynaTAC 8000x was the first commercially available handheld mobile phone. The effect of mobile phone radiation on human health is the subject of recent[when? ] interest and study, as a result of the enormous increase in mobile phone usage throughout the world. Mobile phones use electromagnetic radiation in the microwave range, which some believe may be harmful to human health. A large body of research e...