It is the school cell phone shielding network of cell phone jammer

 It is the school cell phone shielding network of cell phone jammer .
3G era will bring people to a variety of media platforms, including pictures, text, animation, video, audio and various forms of platform. Anytime, anywhere to listen to the news, read the news. With the continuously improving the quality of the mobile newspaper personnel, will give people more original high-tech level of mobile newspaper. There is the opening of the phone reported a variety of business and advertising revenues continue to increase in the spring will bring the week's quarterly career more brilliant. Conclusion: The impact of new media in the evolution of the digital wave, mobile news as the conclusion of an emerging media body is bound to make the audience a strong sense of dependence, while accelerating the collapse of the traditional newspaper industry.
According to the national planning, PHS in the next few years will gradually withdraw from the market, so that the frequency of development of 3G communications. PHS terminal is not compatible with other mobile communication network, which means that when the country more than 50 million PHS will suddenly become electronic waste. Old mobile phones gold extraction pollute the environment. According to the UN report, a phone such as copper, cobalt, silver and gold metal accounted for 23% of the weight. According to insiders, a variety of precious metals can be extracted from the circuit boards of mobile phones and other electronic waste. 1 ton of used cell phone circuit boards can be isolated from approximately 130 kilograms of copper, two kilograms of silver, 0.4 kg of gold and 80 grams of palladium. Due to the low cost recovery, the low threshold, used mobile phones to become an important way for many small garbage plant extracting the metal. cell phone jammer can not be got correctively and timely.
DoCoMo, for example, 25.3 million mobile phones sold in 2002, about 15.2 million (60%) in 2003 by the user to replace. Another survey shows that Beijing mobile phone penetration has reached 81%, and more than 60% of the users to replace the phone, the replacement cycle is approximately 1 year. Ministry of Information Industry predicted that the view of China's mobile phone market is in a period of rapid development, the current phase-out of the country of the old phone is estimated at more than 20 million per year. As the Internet age high-tech garbage, discarded cell phones and cell phone batteries caused a great deal with the crisis. The potential hazards of the used mobile phone batteries on the environment.