Mobile phone radiation and health

The effect of mobile phone radiation on human health is a subject of interest and study worldwide, as a result of the enormous increase in mobile phone usage throughout the world. , there were 7.4 billion subscriptions worldwide (but some have more than two, so 4,230 millions users in 2014 gives better picture with then about 97 phones per 100 citizens). Mobile phones use electromagnetic radiation in the microwave range (450–2100 MHz). Other digital wireless systems, such as data communication networks, produce similar radiation.