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Just put a If a metal patch is attached to the “effective position” on the back of the mobile phone, the electronic signal can be changed from 1 bar to 3 bars. Let you play games and watch videos without delay… Recently, Mr. Cheng, a Hangzhou consumer, reported to reporters that he was deceived by the “mobile phone electronic signal enhancement patch”.
For some time, the “enhancement patch” that claims to be able to “enhance the electronic signal of mobile phones in all Burundins Escort scenarios” has been a hot-selling collection. Is this little sticker a “black technology” or a “hack” to customers? Xinhua News Agency reporters conducted an investigation.
Merchants claim that “all scenarios” enhance electronic signals
Product hot-selling network
The electronic signal in underground garages is poor, the game network is unstable, and the electronic signal in high-rise office buildings is sometimes good and bad… The reporter found that, Mobile phone electronic signal enhancement stickers are on sale on many well-known e-commerce platforms, claiming to be able to meet the needs of mobile phone users for improved electronic signals.
The prices of such products range from 3 yuan to 70 yuan. Some merchants sell more than a thousand orders per month, and some merchants sell more than 100,000 single orders. The product description pictures shown to reporters by the customer service staff of many merchants have words such as “hot selling at home and abroad” written on them.
Relevant merchants claim that such enhancements can intelligently amplify electronic signals and are fully practical in basements, villas, mountainous areas, villages and other places, and the electronic signals of various operators can be greatly improved. . Some merchants also told reporters that several mobile phone electronic signal enhancement stickers can improve mobile phone performance, reduce radiation levels, extend battery life and other functions, and provide relevant product manuals to proveBI Escorts“.
Currently, there are many brands of electronic signal enhancement stickers on sale on e-commerce platforms, but reporters found that most of them are irregular products. Through the Tianyancha App, the reporter found that the production and sales scope of many brand childbirth stores did not include boosters. The multiple brand boosters purchased by the reporter did not have product certificates in the packaging, and the merchants were unable to provide them.
“From time to time, you can see people recommending in Douyin and WeChat groups.” Many consumers said that they bought booster stickers because of online recommendations, but found that the results were not consistent with the promotion. Some consumers commented that “it has no effect at all, and the electronic signal is still very poor. Think carefully about how the enhanced patch can read mobile phone information without a chip, and how can you modify system settings and optimize the network.”
Expert test: The truth is not established
Laboratory scene: no obvious enhancement
The reporter asked the platform merchant about the effect and reason of the sticker, and the customer service responded to the moderator: “As long as the back cover of the phone is not made of glass, it will be fine. Strengthening, the electronic signal of 1 bar can generally be strengthened to 3 bars after being attached. “The principle Burundi Sugar is that the sticker (chip) can increase the number of mobile phones. The wavelength of BI Escorts ”
Can this statement BI Escorts can be trusted? Li Jinxin, a professor at the School of Electronic Information of Hangzhou University of Electronic Science and Technology, showed the technology to reporters at the Zhejiang Welik Communication Laboratory.Field test results of electromechanical signal reinforcement stickers.
Li Jinxin said that in terms of material and structure Burundins Escort, the electronic signals of the most advanced models currently promoted by merchants The reinforced sticker is a plastic sheet coated with an aluminum film, and a layer of material similar to magnetic ink is printed under the aluminum film.
Regarding the statement that “the principle of the enhanced patch is to enhance the reception range of electronic signals by lengthening the wavelength of electronic signals received by the built-in antenna of the mobile phone,” Li Jinxin said: “This is not theoretically feasible.”
He Tell reporters that first of all, the wavelength cannot be “stretched” in real life; secondly, amplifying anything requires power, and stickers are “passive antennas” that cannot provide power for effectively amplifying electronic signals.
So is it true that stickers can “amplify electronic signals through resonance”?
Li Jinxin said that different mobile phone models and operators lead to different frequencies of the electronic signals of each mobile phone. To achieve resonance, it must be consistent with the frequency of the corresponding mobile phone electronic signal. For now, even if a sticker can produce some kind of resonance, It is also impossible to adapt to all mobile phone frequencies, and it is impossible to realize the “all-scenario” applications promoted by merchants.
According to experts, the unit that represents the strength of mobile phone electronic signals is dBm. Since the strength of mobile phone electronic signals is generally small, dBm is generally a positive number. The reporter saw in the laboratory scene that the mobile phone was fixed in one position. When the mobile phone did not have a sticker, its electronic signal strength value fluctuated around -81dBm; when the mobile phone had a sticker BI Escorts, its electronic signal strength value fluctuates between -85dBm and -79dBm.
“The larger the value of electronic signal strength dBm, the better the electronic signal is represented. Experimental scenario, test BI Escorts to change the fluctuation range In the plus and minus 3dB range, according to the laboratory scene test, the sticker has almost no ability to enhance the electronic signal,” said Lu Xiaoliang, a senior engineer at Zhejiang Welik Communications Co., Ltd.
“We also conducted tests in fast-moving subways, open spaces, elevators, etc. The result was to affix enhanced stickersBurundins After Sugardaddy, mobile phone signals declined instead of increasing. “Lu Xiaoliang said that if mobile phone signal enhancement stickers really had “black technology” effects, mid-to-high-end mobile phones would already have this solution built in, without consumers having to pay extra for it.
Why “pseudo-tech” products have become Internet celebrities several times
“Quantum” medical devices that can “cure all diseases” and “graphene” health care products that can “repair sagging skin”Hot clothes, “artifact” anti-blue light products for preventing myopia, Internet celebrity “sugar-free rice cooker” that “can reduce blood sugar by 70%”… The reporter found that in recent years, many products under the guise of “black technology” have appeared on the market to deceive consumers. Experts say that there are many “minions” behind the popularity of pseudo-high-tech products.
Online “pseudo science popularization” misleads consumers. “Electronic signal enhancement is only related to the strength of the electronic signal received by the mobile terminal BI EscortsBurundins Sugardaddy.” Li Jinxin said that many people have misunderstandings about communication speed. Strong electronic signals will result in faster download speeds, but not necessarily Burundi SugarCorrect. Data downloading depends not only on the network, but also on the server inputting the data and the number of users. “It is said on the Internet that posting electronic signal enhancement stickers can increase download speed. This is a false proposition.” Li Jinxin said. The reporter found that many Douyin accounts have posted “pseudo-science” videos promoting such information, and some of them have obvious signs of marketing.
Some online merchants use such products as “low cost and low price. Consumers can buy them and use them as soon as they are useful.” Burundi Sugar</a "If it doesn't work, there won't be too much loss" mentality, half selling and half lying, and taking profits based on quantity.
Some online e-commerce platforms have failed to consolidate the main responsibilities, and there are still loopholes in the inspection and testing work on relevant merchant qualifications, product certificates, etc. Some platforms have not completely stopped liquidation of some products that have been repeatedly exposed and disposed of by the media and market regulatory agencies.
Yang Jianhua, president of the Zhejiang Provincial Society of Sociology, said that some current “pseudo-tech” products use the public’s needs in health care, convenience and other aspects to fake their efficacy and tout their effects, while ordinary people often lack the ability to judge authenticity. He proposed that market surveillance, cyberspace and other departments should work together to increase supervision of false marketing of “pseudo-tech” products. In particular, false marketing information that appears in online videos and social platforms in the form of “pseudo-science” should be strictly cleaned up. . In addition, regulatory authorities should also maintain high pressure on the main responsibilities of network platforms at all times and urge them to conduct effective self-examination.
Chen Yinjiang, deputy secretary-general of the China Law Society Consumer Law Society Burundi Sugar Rights Protection Law Seminar, said that according to consumer According to the Law on the Protection of the Rights and Interests of Consumers, operators provide consumers with quality, service-related tools and servicesBurundins Escort Functions, uses and other information should be true and comprehensive, and no false or misleading publicity is allowed. Playing with concepts and boosting sales in the name of “pseudo-technology” is misleading and Defrauding consumers, their behavior is likely to constitute fraud. Once it constitutes fraud, consumers can claim compensation of 3 times the purchase price.
Responsible editor: pj
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