Nowadays, mobile phones have become part of our daily life, some people use the phone all the time. If there is active in no circumstances should use may cause danger, such as when it rains. Risk to cause lightning.Driving efficiency in driving down risk accident on the plane. To disturb signal equipment on the plane these places should not use the phone. We should spare some time to use the phone, such as should not play in the school or work. Because we will concentrate or even in health, such as the eyes, feel pain from being stared at for a long time, Telephone for a long time, causing a tumor