Mobile phone signal “enhancement paste” hot sale, really black technology products?!

Signal enhancement paste is a metal sheet called “full scene” to enhance the signal of mobile phone. Don’t look at a small piece of metal, it is said that whether in the basement or elevator room, just stick it on, the mobile phone signal is full of cells in a moment. Recently, the mobile phone signal “enhancement post” has become a popular one, especially for major e-commerce platforms and online shopping live broadcast rooms, which is an absolute hot sale. The reporter search found that the price of “enhanced stickers” of mobile phone signals is not high for so-called black technology products. The most expensive ones are less than two yuan. Many businesses are carrying out the promotion of “buy one for one”. The product version is more varied, from generation 8 to generation 9, to the 26th generation, the update and replacement is particularly fast, which generation to buy. For example, this so-called “latest 18 generation” signal enhancement sticker is called “double chip” thickened antenna, all mobile phones can use it, no signal before installation, and it will be full one second after installation; for signal generation, the signal can be increased by 80% and low radiation. Plus the buyer of pure color praise, it is really hard to think about it. At a glance, the sales volume is sure, 100000 plus. It seems that there are still many people who are worried about mobile phone signals. Can you really get rid of the problem of mobile phone signal that many people worry about when you play game card, delay in video brushing and no way to answer the phone when you enter the elevator? Is the mobile phone signal “enhancement paste” black technology or “black” users? In order to verify this, the reporter purchased three mobile phone signal enhancement stickers with price of 20 yuan, 30 yuan and 68 yuan from three online stores. Meanwhile, they also prepared two mobile phones purchased through formal channels, and took them to the Tel terminal Laboratory of China Institute of information and communication for comparative test. Experts first install test white cards for two mobile phones, which can reduce signal interference of different operators and do not involve the operator’s parameter information. Next, according to the usage method, the mobile phone signal “enhancement paste” is pasted on the corresponding position on the back of the phone. Finally, put the phone in a ready model of the head hand, to simulate the scene of people’s life to receive calls. Wang Na, deputy director of antenna and positioning Department of Tel terminal laboratory, China Institute of information and communication, member of the expert library of “source news” of the China Association of science and technology: what we see now is our headform and human model. They are designed to simulate the real human head and human parameters, and also conform to international standards. In our real life, actually, when we call, our mobile phones are close to the head, or when we are online, the mobile phones are all in our hands. So we also use the human head and human environment to evaluate the function of mobile phone signal paste. Experts point out that the gesture of hand holding and head block may affect the signal of mobile phone. But with the development of communication technology, such factors have been avoided in the design of mobile antenna, which can be ignored. Wang Na, deputy director of antenna and positioning Department of Tel terminal laboratory, China Institute of information and communication, member of the expert library of “source news” of the China Association of science and technology: in the network entry test, we will also comprehensively evaluate the influence of human head or human hands on mobile phone signals. Therefore, as long as people buy mobile phones through the network access test from regular channels, they can meet the normal use needs. Lu Nian, CCTV reporter of the general station: I can see that all the walls and the ground in the whole darkroom are all of these cones in the whole anechoic chamber. What kind of material is such cone? Wang Na, deputy director of antenna and positioning Department of Tel terminal laboratory, China Institute of information and communication, member of the expert library of “source news” of the China Association of science and technology: the cone we see is called absorbing material, and its function is mainly to absorb the incoming wave signals, so as to ensure that there is no clean environment for refraction signal and reflection signal in the darkroom. What the antenna is tested is the signal of the terminal under test, so as to ensure the accuracy of the test. Member of the expert library of “source news” of the China Association of science and technology Wang Na: because when we use mobile phones in our lives, we hope that communication performance is better from all angles. Therefore, in the test, we will also evaluate the communication performance of all directions of the mobile phone. These two turntables can ensure that we can collect data from all directions. The experiment began. A group of tests is about 3 minutes. During the test, the mobile phone will rotate on the turntable, while the simulation base station will rotate around the turntable to ensure that the mobile phone signals are received at 360 degrees without dead angle. The signal is transmitted to the host outside the darkroom through the analog base station, and the line graph is presented in a staggered way gradually on the screen. When the test is finished, the result graph of circular ring will appear. In the laboratory, experts have conducted four comparison tests on the “enhanced stickers” of mobile phone signals at different prices. What are the results? Can the mobile phone signal “enhancement paste” really enhance the mobile phone signal? Wang Na, deputy director of antenna and positioning Department of Tel terminal laboratory, China Institute of information and communication, member of the expert library of “source news” of the China Association of science and technology: the above figure is the transmission direction map of the mobile phone before it has not pasted the signal. The following three are the directions after three different signals are pasted respectively. It can be seen from the figure that the figure has not changed. Next, experts call out the test data of total radiation power. Similarly, the four sets of data are basically the same. That is, the cell phone signal paste has no improvement on the mobile phone signal. Member of the expert library of “source news” of the China Association of science and technology Wang Na: on the one hand, theoretically, the longer the antenna is, the longer the wavelength of the signal it can receive. But now the signal paste is not connected with the built-in antenna of the mobile phone, so it does not extend the effective antenna length of the mobile phone. On the other hand, if you want to increase the signal, it needs energy. Now, this sticker is passive equipment. It can not provide energy for amplifying signal, so it can not work theoretically. Experts tell us that the first factor affecting the mobile phone signal is the signal base station set up by major operators. The base station is far and near, and the density of human flow will affect the signal strength and weakness. Another big factor is mobile antenna. You must remember the first mobile phone “big brother”, which needs to pull a 5-10 cm antenna from the top of the phone to make a call. This is the earliest external antenna of the mobile phone. With the innovation of communication technology, antenna has been hidden from outside the mobile phone body to the inside of the body, and has become a built-in antenna. The number has changed from the previous one to the number of today. At present, all mobile phone products have made comprehensive consideration and evaluation on communication performance when designing and entering the network. So-called “enhanced stickers” of mobile phone signals have neither electric drive nor connection with the built-in antenna of mobile phones. It is impossible to add signals in the air gap. In fact, it is not only unable to enhance the “enhancement paste” of mobile phone signal, from “quantum” medical devices of “all kinds of diseases” to “graphene” thermal underwear that can “repair loose skin”, to “magic” blue light glasses for myopia prevention, and “sugar reducing 70% sugar reducing” online Red “sugar free electric rice pot” Reporter found that in recent years with the development of short video network platform, many products in the market under the guise of “black technology” to cheat consumers, so as to make a lot of profits. According to the provisions of China, if the operator has fraudulent acts in providing goods or services, it shall increase the compensation for the losses suffered by the operator according to the requirements of the consumer, and the amount of the increase shall be three times the price of the consumer’s purchase of goods or the cost of receiving the service; if the amount of the increase in compensation is less than 500 yuan, it shall be 500 yuan. That is, if the business plays the concept and the sales volume in the name of “technology”, misleading and cheating consumers, once the fraud is constituted, the consumer can claim three times the price of the purchased goods. New product launch