Keeping mobile phones in close contact with your body can be harmful. They tend to emit radiation, which is natural, because of the network that flows in and out of them. However, the skin and the body are ultra-sensitive, and these rays can lead to long-term health effects. Hence, it is best to keep them at a distance, especially if you have a habit of using the phone while in bed. Always have a side table to keep the phone on before sleeping.