**1. Introduction**

A smartphone is a category of mobile device that provides advanced capabilities software system that provides a standardized interface and platform for application developers. They allow users to carry a mobile phone, games console, music player, camera, and calendar and

© 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. © 2017 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Internet browser all in one small handheld device, with their limitations governed only by the types of applications downloaded onto them [1]. There are over 1.5 billion smartphone users around the world, and it was estimated that more than one billion smartphones will be sold in 2016 [2]. Smartphones have become an indispensable part of the daily life. While smartphones have made life more convenient with their advantages [3–5], they have also brought many side effects [2, 6] especially on the health. This chapter aims to focus on the benefaction and disadvantages of smartphone on the health.

This study concerns children less than 15 years of both sexes. We cross literature data on the side effects of smartphone in terms of health, especially in children. Genesis of smartphone, advantages of smartphones, and potential danger of their mismanagement, measures to limit smartphones' dangers would be studied. We will focus on differences between developed and developing countries.
