As we all know,While the mobile phone brings great conveniences to people, it also raises new challenge on the security of confidential work. In recent years, the wiretap, cheating in examination, medical negligence and gas station explosion with mobile phone occurred and it has aroused great concern of the society. Maybe it's one of the reasons that promoted the appearance of mobile phone jammer. You may be watching a nice movie or enjoying your nap when you get free for sometime. Still you have chances of getting disturbed with your most loved ones and close friend chatting near you on the cell phone. At such hours, if you really care for your free time then you need to buy a mobile phone jammer.