Schools to install cell phone shielding, and 24 hours a day on, for those of us who are growing and developing, there is harm?

On 24 hours is certainly not reasonable, the first thing to say is that there is no evidence that cell phone signal shielding will be harmful to the human body, like a microwave oven, if his emission indicators in a safe value, naturally, there will be no problem.

Schools are open 24 hours a day with a shield, you can protest, because it interferes with the freedom of communication. The use of shielding is mainly for the examination or class time, is to prevent the examination cheating affect the emergence of a loss of fairness and impartiality of the use of a technical means of defense, but if the students in the class or in the dormitory when contacting parents can not use the cell phone, so it is clearly inappropriate behavior.